Publications

(46) Nonsymmetrical cholesterol dimers constituting regioisomeric oxadiazole and thiadiazole cores: an investigation on structure-property correlation, Balaram Pradhan, Nirmalangshu Chakraborty, Ravindra Kumar Gupta, G. Shanker, Ammathnadu S. Achalkumar* New J. Chem. 2017, 41, 879-888.

(45) Multifunctional hexacatenar mesogen exhibiting supergelation, AIEE and its ability as a potential volatile acid sensor, Balaram Pradhan, Monika Gupta, Santanu Kumar Pal and Ammathnadu S. Achalkumar,* J. Mater. Chem.C, 2016, 4, 9669-9673.                                                        

(47) Electroluminescent Room Temperature Columnar Liquid Crystals Based On bay-Annulated Perylene tetraesters, Ravindra Kumar Gupta, Dipjyoti Das, Monika Gupta, Santanu Kumar Pal, Parameswar Krishnan Iyer* and Ammathnadu S. Achalkumar* J.Mater. Chem.C, 2017, 5, 1767-1781.

1. (44) Effect of Atomic scale Difference on the Self-assembly of Thiophene based Polycatenars in Liquid Crystalline and Organogel state, Balaram Pradhan, I. M. Visakh, Geetha G. Nair, D. S. Shankar Rao, S. Krishna Prasad, Chem. Eur. J., 2016, 22, 17843-17856.

(43) Hexacatenars exhibiting π-π Driven Supergelation, Aggregation Induced Blue Light Emission,  and Thermochromism, Suraj Kumar Pathak,  Monika Gupta, Santanu Kumar Pal and Ammathnadu S. Achalkumar* Chemistry Select, 2016 , 1, 5107-5120.

(41) Liquid Crystalline Star-shaped Supergelator Exhibiting Aggregation Induced Blue light Emission, Suraj Kumar Pathak, Balaram Pradhan,  Monika Gupta, Santanu Kumar Pal and Ammathnadu S. Achalkumar* Langmuir, 2016, 32, 9301-9312

(40) Star-shaped fluorescent Liquid Crystals derived from s-triazine and 1,3,4-oxadiazole moities, Balaram Pradhan, Suraj Kumar Pathak, Ravindra Kumar Gupta, Monika Gupta, Santanu Kumar Pal and Ammathnadu S. Achalkumar* J. Mater. Chem.C, 2016, 4, 6117-6130.

(39) Photoisomerization behavior of Photochromic Amide based Azobenzene Dyes Exhibiting H-bonding Effect: Synthesis and Characterization, Gurumurthy Hegde*, A. R. Yuvaraj, G. S. Mei, S. Mehmood, U. K. Mondal, A. S. Achalkumar, Korean Journal of Chemical Engineering, 2016, 33(4), 1480-1488.

(38) Bay annulated Perylene Tetraesters: A New Class of Discotic Liquid crystals, Ravindra Kumar Gupta, Suraj Kumar Pathak, Balaram Pradhan, Monika Gupta, Santanu Kumar Pal  and Ammathnadu S. Achalkumar*  ChemPhysChem, 2016, 17, 859-872.

(37) Photoluminescent Discotics Derived from Tris(N-salicylideneaniline)-(E)-Stilbene Conjugates:  Structure-Property Correlations, A. S. Achalkumar*, B. N. Veerabhadraswamy, Uma S. Hiremath, D. S. Shankar Rao,  S. Krishna Prasad and C. V. Yelamaggad* Dyes and Pigments, 2016, 132, 291-305.

(36) Self-assembled 1D semiconductors: Liquid Crystalline Columnar Phase,                                                                              Manoj Mathews, Achalkumar, A. S., Quan Li* A chapter in the book titled ‘Anisotropic Nanomaterials’ Ed: Quan Li, Springer Publications, 2015 (ISBN:978-3-319-18292-6)

(35) Effect of Regioisomersim on the Self-assembly and Photophysical Behavior of 1,3,4-Thiadiazole based Polycatenars, Suraj Kumar Pathak, Subrata Nath, Ravindra Kumar Gupta,  Doddamane S. Shankar Rao, S. Krishna Prasad, A. S. Achalkumar,* J. Mater. Chem.C, 2015, 3, 8166-8182. (Selected as one of the hot articles of 2015)

(34) Perylo[1,12‐b,c,d] Thiophene Tetraesters: A New Class of Luminescent Columnar Liquid Crystals, Ravindra Kumar Gupta, Balaram Pradhan, Suraj Kumar Pathak, Monika Gupta, Santanu Kumar   Pal and  A. S. Achalkumar*  Langmuir, 2015, 31 (29), 8092-8100.

(33) Fast photoluminescence switching in the nematic phase of calamitic-discotic composites, P. Lakshmi Madhuri, D.S. Shankar Rao, C. V. Yelamaggad, A. S. Achalkumar, S. Krishna Prasad* Adv. Optical Mater., 2015, 3, 1116-1124.

(32) Columnar Self-assembly of Star-shaped Luminescent Oxadiazole and Thiadiazole derivatives,   Suraj Kumar Pathak, Ravindra Kumar Gupta, Subrata Nath, Doddamane S. Shankar Rao, S. Krishna Prasad, A. S. Achalkumar,* J. Mater. Chem.C, 2015, 3, 2940-2952.

(31) N-annulated Perylene Tetraesters: New class of Luminescent Discotic Liquid Crystals, Ravindra Kumar Gupta, Suraj Kumar Pathak, Balaram Pradhan, Doddamane S. Shankar Rao, S. Krishna Prasad and   A. S. Achalkumar* Soft Matter, 2015, 11, 3629-3636.

(30) Nonsymetric dimers comprising chalcone and cholesterol entities: An investigation on structure-property correlation, A. S. Achalkumar*, U. S. Hiremath, D. S. Shankar Rao, C. V. Yelamaggad*  New J. Chem. , 2014, 38(9), 4235-4248.

(29) Reversible metallization of soft UV Patterned substrates,       P. Prompinit, A. S. Achalkumar, A. S. Walton, R. J. Bushby, C. Wälti, S. D. Evans* J. Mater. Chem.C, 2014, 2, 5916-5923.

(28) Self-assembly of Hekates - Tris(N-salicylideneaniline)s into columnar structures: Synthesis and characterization, A. S. Achalkumar, U. S. Hiremath, D. S. Shankar Rao, S. Krishna Prasad, C. V. Yelamaggad*                                                                         J. Org. Chem., 2013, 78, 527–544.

(27) Light emitting, star shaped Tris(N-salicylideneaniline) discotic liquid crystals bearing trans stilbene fluorophores: Synthesis and characterization, A.S. Achalkumar, C.V. Yelamaggad,* Tetrahedron Lett., 2012, 53, 7108-7112

(48) Stimuli-Directed Self-Organized One-Dimensional Organic Semiconducting Nanostructures for Optoelectronic Applications, A. S. Achalkumar, Manoj Mathews, Quan Li*  A chapter in the book titled ‘Functional Organic and Hybrid nanostructured Materials’ Ed: Quan Li, Wiley VCH Publications, 2017, page 247-305. (ISBN 978-3-527-34254-9)

(42) Aromatic π-π Driven Supergelation, Aggregation Induced Emission and Columnar Self-assembly of Star-shaped 1,2,4-Oxadiazole derivatives, Suraj Kumar Pathak,  Balaram Pradhan, Ravindra Kumar Gupta, Monika Gupta, Santanu Kumar Pal and Ammathnadu S. Achalkumar* J. Mater. Chem.C, 2016, 4, 6546-6561.                                                                                                   

(49) Contrasting effects of heterocycle substitution and branched tails in the arms of star-shaped molecules,          Suraj Kumar Pathak, Subrata Nath, Joydip De, Santanu Kumar Pal, Achalkumar, A. S.* New J. Chem. 2017, 41, 4680 - 4688.

(50) Tuning the self-assembly and photophysical properties of bi-1,3,4-Thiadiazole derivatives through electron donor-acceptor interactions and their application in OLEDs, Abhay Kumar Yadav, Balaram Pradhan, Hidayath Ulla, Subrata Nath, Joydip De, Santanu Kumar Pal, M. N. Satyanarayan, Achalkumar, A. S.*  J.Mater. Chem.C, 2017, 5, 9345-9358.

(51) Effect of regioisomerism on the mesomorphic and photophysical behavior of oxadiazole-based tris(N-salicylideneaniline)s: Synthesis and characterization, Suraj Kumar Pathak, Subrata Nath, Monika Gupta, Santanu Kumar Pal and Ammathnadu S. Achalkumar                                                                                                                                                                    New J. Chem. 2017, 41, 9908-9917.

(51) Star-shaped π-Gelators based on Oxadiazole and Thiadiazoles: A Structure-property Correlation, Subrata Nath, Suraj Kumar Pathak, Joydip De, Santanu Kumar Pal and Ammathnadu S. Achalkumar* Molecular Systems Design and Engineering, 2017, 2, 478-489.

(52) Effect of regioisomerism on the mesomorphic and photophysical behavior of oxadiazole-based Tris(N-salicylideneanilines): Synthesis and characterization,  Suraj Kumar Pathak, Subrata Nath,  Joydip De, Santanu Kumar Pal and Ammathnadu S. Achalkumar* New J. Chem. 2017, 41, 9908 - 9917.

(53) Columnar Self-assembly of electron deficient dendronized  bay-annulated perylene bisimides,  Ravindra Kumar Gupta, D. S. Shankar Rao, S. Krishna Prasad and Ammathnadu S. Achalkumar* Chem. Eur. J., 2018, 24, 3566-3575. (Hot Paper in Semiconductors)

(54) Columnar Self-assembly of luminescent bent-shaped hexacatenars with a central pyridine core connected with substituted 1,3,4-oxadiazole and thiadiazoles, Balaram Pradhan, Ravindra Kumar Gupta, Suraj Kumar Pathak,  Joydip De, Santanu Kumar Pal and Ammathnadu S. Achalkumar* New J. Chem. 2018, 42, 3781-3798.

(55) Perylene-Triazine based star-shaped green light emitter for organic light emitting diodes , Ravindra Kumar Gupta, Hidayath Ulla,  M. N. Satyanarayan and Ammathnadu S. Achalkumar* Eur. J. Org. Chem., 2018, 1608-1613 (Selected for the Outstanding Organics in Functional Organic Materials Section)

(56) Room temperature columnar liquid crystalline self-assembly of acidochromic, luminescent, star-shaped molecules with cyanovinylene chromophores, Ravindra Kumar Gupta, Suraj Kumar Pathak,  Joydip De, Santanu Kumar Pal and Ammathnadu S. Achalkumar* J.Mater. Chem.C., 2018, 6, 1844-1852

(57) A Sensitive and Selective Sensor For Picric Acid Detection with A Fluorescence Switching Response, Subrata Nath, Suraj Kumar Pathak, Balaram Pradhan, Ravindra Kumar Gupta, K. Anki Reddy,   G. Krishnamoorthy,*  and A. S. Achalkumar*   New J. Chem., 2018, 42, 5382-5394.

(58) Substituted Aroylhydrazone based polycatenars: Tuning of Liquid Crystalline Self-assembly, Hemant Kumar Singh, Balaram Pradhan, Sachin Kumar Singh, Rajib Nandi, D. S. Shankar Rao, S. Krishna Prasad, Ammathnadu S. Achalkumar* and B. Singh* ChemistrySelect, 2018, 3, 4027-4037.

(59) Giant enhancement of photoluminescence and tertiary emission in a chiral nematic by matching photonic bandgap and excitation wavelength, Marlin Baral, S. Krishna Prasad*, Himali Patel, A. S. Achalkumar and C. V. Yelamaggad                                                                                                                                                                  J. Mol. Liq. 2018, 262, 354-362.

(61) Microwave assisted method for the synthesis of  perylene ester imides as a gateway towards unsymmetrical perylene bisimides, Ravindra Kumar Gupta and A. S. Achalkumar                                                                                                                                                                J. Org. Chem. 2018, 83, 6290-6300.

(63) Giant enhancement and facile tuning of photoluminescence in a soft anisotropic magneto-gel, Vaisakh V. Mohanan, Balaram Pradhan, Vimala Sridurai, C. V. Yelamaggad, A. S. Achalkumar, Geetha G. Nair*
Nanoscale, 2018, 15686-15695.

(60) First example of White Organic Electroluminescence from Perylene Ester Imides, Ravindra Kumar Gupta, Dipjyoti Das, Parameswar Krishnan Iyer* and Ammathnadu S. Achalkumar* ChemistrySelect, 2018, 3, 5123-5129.

(62) Light driven phase transitions in liquid crystals and their applications, A. S. Amrutha, A. S. Achalkumar and Quan Li*, Chapter 7 in book titled Photoactive Functional Soft Materials, Wiley VCH, Weinheim, 2018 ISBN 978-3-527-34482-6, P227-P287.

(65) Perylene based liquid crystals as materials for organic electronics, Ravindra Kumar Gupta and Ammathnadu S. Achalkumar* Langmuir, 2019, 35, 7, 2455-2479. (Invited Feature Article, with coverpage)

(64) Room temperature helical fluids in  a single component system, G. Shanker*, A. Bindushree,  K. Chaitra, P. Pratap,  Ravindra Kumar Gupta,   A. S. Achalkumar and C. V. Yelamaggad* J. Mol. Liq., 2019, 275, 849-858.

(66) Preparation and photophysical properties of soft-nano composites comprising guest anatase TiO2 nanoparticle and host hekate mesogens, D. P. Singh*, K. Agrahari,  A. S. Achalkumar, C. V. Yelamaggad, R. Manohar and M. Depriester,      Journal of Luminescence, 2019, 205, 304-309.

(67) Transmuting the  blue fluorescence of hekates mesogens derived from Tris(N-salicylideneaniline)s core via ZnS/ZnS:Mn2+ semiconductor quantum dots dispersion, D. P. Singh*, A. K. Mishra,  A. S. Achalkumar, C. V. Yelamaggad, and M. Depriester Journal of Luminescence, 2019, 210, 7-13.

(68) Synthesis and self-assembly of aroylhydrazone based polycatenars: A structure-property correlation, Hemant Kumar Singh, Ravindra Kumar Gupta,  Sachin Kumar Singh, D. S. Shankar Rao, S. Krishna Prasad, Ammathnadu S. Achalkumar* and B. Singh* J. Mol. Liq., 2019, 284, 282-290.

(70) Room temperature columnar liquid crystalline materials based on Pyrazino[2,3-g]quinoxaline derivatives for bright green OLEDs,  Vinod Kumar Vishwakarma, Subrata Nath,  Monika Gupta, Deepak Kumar Dubey, Sujith Sudeendran Swayamprabha,  Jwo-Huei Jou, Santanu Kumar Pal and A. S. Achalkumar* ACS Applied Electronic Materials, 2019,  1(9), 1959-1969.

(69) Hetero Atom Bay-Annulated Perylene Bisimides: New Materials for Organic Field Effect Transistors,  Ravindra Kumar Gupta, Anamika Dey, Ashish Singh, Parameswar Krishnan Iyer* and Ammathnadu S. Achalkumar*             ACS Applied Electronic Materials, 2019, 1(8), 1378-1386.

(71) Influence of lateral methyl/chloro substituent on the liquid crystalline and photoswitching behaviour of bent-core mesogens bearing azobenzene wing: synthesis and characterization, Srikanth Turlapati, Sunil B N, Vinod Kumar Vishwakarma, Ammathnadu S. Achalkumar* and Gurumurthy Hegde* New J. Chem., 2020, 44, 5731-5738.

(73) Effect of inter- and intramolecular H-bonding on the mesomorphic and photoswitching studies of (E)-4-((4-(hexyloxy) phenyl)diazenyl)-N-phenyl benzamide derivatives, Sunil B. N., Paresh Kumar Behera, Ammathnadu S. Achalkumar, and Shanker G., Gurumurthy Hegde* RSC Adv. 2020, 10, 20222-20230.

(75) Experimental and Theoretical Investigations of Acid Sensing Properties of Pyrazino[2,3-g]quinoxaline Derivatives, Vinod Kumar Vishwakarma,Vasista Adupa, K. Anki Reddy, A. S. Achalkumar* J. Mol. Struct. 2021, 1225,  129120(1-7).

(74) Functional Ionic Liquid Crystals, Krishnachary Salikolimi, Achalkumar Ammathnadu Sudhakar*, Yasuhiro Ishida* Langmuir 2020, 36, 40, 11702-11731 (Invited Feature Article with Cover page)

(76) Room Temperature, Deep-Red/NIR-Emissive, Redox-Active C3-Symmetric (n,π-conjugated) Columnar Liquid Crystals: C3h-Tris(keto-hydrozone)s, Rashmi A. Nayak, B. N. Veerabhadraswamy, D. S. Shankar Rao, A. S. Achalkumar, C. V. Yelamaggad* ACS Omega, 2021, 6(4), 3291-3306.

(77) Metal Free C-H Functionalization of Pyrrolidine to Pyrrolinium-based Room Temperature Ionic Liquid Crystals

Sumana Mandal, Ravindra Kumar Gupta, Suraj Kumar Pathak, D. S. Shankar Rao, S. Krishna Prasad, A. S. Achalkumar * and Chandan K. Jana* New J. Chem., 2021, 45, 8064-8071.

(78) Structure-Property Relationships in Quinoxaline Based Liquid Crystals, Vinod Kumar Vishwakarma and A. S. Achalkumar* Soft Matter, 2021, 17, 8221 - 8257.

(80) Synthesis and Liquid Crystalline Properties of Low Molecular Weight Bis-Chalcone Compounds, Anju K. Sasidharan, Jomon Mathew, A. S. Achalkumar and Manoj Mathews* Current Organic Synthesis, 2022, 19, 463-475.

(72) Helical supramolecular polymers with rationally designed binding sites for chiral guest recognition, Krishnachary Salikolimi, Vakayil K Praveen, Ammathnadu S. Achalkumar*, Kuniyo Yamada, Noriko Nishizawa Horimoto and Yasuhiro Ishida* Nat.Commun.,2020, 11:2311 (1-12) Selected as Editors’s Highlight.

(79) Effect of photonic band gap on photoluminescence in dye-doped blue phase liquid crystal, Nurjahan Khatun, Vimala Sridurai,  Ravindra K. Gupta, Subrata Nath, Madhu B. Kanakala, Swadhin Garain, A. S. Achalkumar, C.V. Yelamaggad and Geetha G. Nair*  J. Phys. Chem. B,  2021, 125 (41), 11582-11590.

(81) A New Class of Solution Processable Pyrazino[2,3-g]quinoxaline Carbazole Derivatives based on D-A-D Architecture for Achieving High EQE in Yellow and White OLEDs, Vinod Kumar Vishwakarma, Mangey Ram Nagar,  Neichoihoi Lhouvum,  Jwo-Huei Jou* and A. S. Achalkumar* Advanced Optical Materials, 2022, 10, 2200241 (1-14).

(84) Room Temperature Columnar Liquid Crystalline Perylene Bisimide as a Novel Corrosion Resistant Surface Coating for Mild Steel Surface, Paresh Kumar Behera, Sowmyashree A S, Mothana Ghazi Kadhim AlFalah, Mrinmoy Roy,
D. S. Shankar Rao, Fatma Kandemirli, Shwetha K , G. K. Prashanth, Srilatha Rao* and Ammathnadu Sudhakar Achalkumar*Journal of Bio- and Tribo-Corrosion, 2023, 9:18 (1-14).

(82) Highly Stable Deep Red-to-NIR OLEDs with an External-Quantum Efficiency of 4.9% from Room Temperature Nanostructured Columnar Fluids based on Hetero Atom bay-Annulated Perylene Bisimides

Paresh Kumar Behera, Mangey Nagar, Ravindra Kumar Gupta, Sibasankar Pradhan, Shankar Rao, S. Prasad, Luke The, Abhijeet Choudhury, Jwo-Huei Jou and Achalkumar Ammathnadu Sudhakar, J.Mater. Chem.C., 2022, 10, 18351-18365.

(83) Calixarene Functionalized Supramolecular Liquid Crystals and their Diverse Applications

Vinay S. Sharma†, Vinod Kumar Vishwakarma†, Pranav S. Shrivastav*, Achalkumar Ammathnadu Sudhakar *, Anuj S. Sharma, Priyanka A. Shah, ACS Omega, 2022, 7, 45752-45796.

(85) Microcrystalline Cellulose Decorated with Fe3O4 Nanocatalysts for the Microwave-Assiisted Synthesis of Thioglyoxamides

Dharmesh J. Shah, Anuj S. Sharma, Vinay S. Sharma, Vinod Kumar Vishwakarma, Achalkumar Ammathnadu Sudhakar, Pranav S. Srivastav, Rajender S. Verma*, ACS Applied Nanomaterials, 2023, 6, 4005-4016.

(87) Liquid crystalline Naphthalene and Perylene Bisimides with D2-π2-A Architecture for High Mobility Organic Field Effect Transistors

Vinod Kumar Vishwakarma, Rajan Singh, D. S. Shankar Rao, Roy Paily*, Achalkumar Ammathnadu Sudhakar*

ACS Applied Electronic Materials, 2023, 5 (4), 2351-2364.

(88) Ambipolar Columnar Self-assembled Organic Semiconductors based on Heteroatom bay-Annulated Perylene Bisimides.

Paresh Kumar Behera, Kajal Yadav, D. S. Shankar Rao,  Upendra Kumar Pandey* and Ammathnadu Sudhakar Achalkumar*

Chemistry An Asian Journal, 2023, 18, e202300086 (1-11)

(86) Supramolecular structure and photo-thermo-electric property of Hydrogen bonded liquid crystalline polymer containing poly(4-vinylpyridine) and cyanostilbene side chains.

Xu-Chen Iv, Lin Lu, Xin-Xiao Zuo, Ammathnadu Sudhakar Achalkumar, Ai-Juan Zhao,  Maxim V. Brermeshev, Fu-Min Wang, Wittaya Ngeontae, Xiang-Kui Ren*

Chemistry A European Journal, 2023, e202204060 (1-6) (Hot Article)

(89) First example of ambipolar napthalene diimide exhibiting room temperature columnar phase

Paresh Kumar Behera, Kajal Yadav, D. S. Shankar Rao,  Upendra Kumar Pandey* and Ammathnadu Sudhakar Achalkumar*

Chem.Comm.2023, 59, 6028-6031.

(93) Pyrazino[2,3-g]quinoxaline core-based organic liquid crystalline semiconductor: Proficient hole transporting material for optoelectronic devices

Asmita Shah, Vinod Kumar Vishwakarma, Neichoihoi Lhouvum, Achalkumar Ammathnadu Sudhakar*, Pawan Kumar*, Abhishek Kumar Srivastava, Fr ́ed ́eric Dubois, Treerathat Chomchok, Nattaporn Chattham and Dharmendra Pratap Singh*

Journal of Molecular Liquids, 2024, 393, 123535.

(90) Highly Soluble Ambipolar anti-Perylene-3,4:9,10 bis(benzimidazole)s Stabilizing Room Temperature Columnar Hexagonal Phase

Paresh Kumar Behera, Kajal Yadav, Alakananda Patra, Ravindra Kumar Gupta, D. S. Shankar Rao, Sandeep Kumar, Upendra Kumar Pandey*, Achalkumar Ammathnadu Sudhakar*
Chemistry A European Journal, 2023, DOI: 10.1002/chem.202302187 (VIP article, With coverpage)

(91) Self-assembled anti-naphthalene-3,4:9,10-bis(benzimidazole)s: Stabilizing room temperature Columnar phase with ambipolar conductivity

Paresh Kumar Behera, Kajal Yadav,  D. S. Shankar Rao,  Upendra Kumar Pandey*, Achalkumar Ammathnadu Sudhakar* ACS Applied Electronic Materials, 2023, 5, 10, 5417-5421.

(102) Revelation of Room Temperature Liquid Crystallinity and Yellow-Orange Electroluminescence (EQE>7%) in a Columnar Self-assembled N-annulated Perylene Bisimide

Paresh Kumar Behera, Sushanta Lenka, Feng-Rong Chen, Mrinmoy Roy, Indrajit Mondal, D.S.Shankar Rao, Satyaprasad P Senanayak, Jwo-Huei  Jou* and Achalkumar Ammathnadu Sudhakar* Chemical Engineering Journal, 2024, 497, 154719 (1-9).

(99) Highly fluorescent room temperature liquid crystalline S-annulated swallow tail Perylene Bisimide Exhibiting enhanced Electroluminescence (EQE>11%)

Paresh Kumar Behera, Feng-Rong Chen, Mrinmoy Roy, Prakalp Gautham, Iram Siddiqui,  D.S.Shankar Rao, Jwo-Huei   Jou* and Achalkumar Ammathnadu Sudhakar* J.Mater. Chem.C., 2024, 12, 6893-6904.

(97) Superior electron mobility, red electroluminescence with high quantum efficiency from printable room temperature columnar liquid crystalline perylene bisimide

Paresh Kumar Behera, Feng-Rong Chen, Indrajit Mondal,  Prakalp Gautham, Nihal Khatiwoda, Iram Siddiqui,  V. E. Krishnaprasad, Rahul Ahmed, D.S.Shankar Rao, Satyaprasad P Senanayak, Jwo-Huei   Jou* and Achalkumar Ammathnadu Sudhakar*

Chemical Engineering Journal, 2024, 488,  150762 (1-11).

(95) Ionic strength and phase systems influence nanotubular material functionality

2. B.S. Ranjitha, Paresh Kumar Behera, Achalkumar Ammathnadu Sudhakar, Gurumurthy Hegde, Shubra Singh, G. Shanker,
   

Journal of Molecular Liquids, 2024, 399, 124339 (1-10)

(92) Visible light mediated synthesis of 1,3-diarylated imidazo[15-a]pyridines via the oxidative amination of C-H catalyzed by graphitic carbon nitride

Nandish Talapada, Anuj S Sharma,  Vinay S Sharma*,  Rahul Ahmed, Pranav S Srivastav*,  Achalkumar Ammathnadu                     Sudhakar* and Rajender S Varma, 

Organic and Biomolecular Chemistry, 2023, 21, 9552 - 9561
(with Coverpage, Highlighted in Synfacts 2023, 20(03), 0288)

(96) Visible light mediated synthesis of 3-indolomethyl chromones via the cyclization of o-hydroxyaryl enaminones with 3-indoleacetic acids catalyzed by graphitic carbon nitride adorned with copper nanoparticles

       Nandish Talapada, Anuj S Sharma,  Vinay S Sharma*,  Rahul Ahmed, Pranav S Srivastav*,  Achalkumar Ammathnadu             Sudhakar and Rajender S Varma,  ChemNanoMat, 2024, e202300641 (with Coverpage)

(94) Tuning the liquid crystallinity and electroluminescence via sulfonation of S-annulated perylene tetraester

       Paresh Kumar Behera, Feng-Rong Chen, Prakalp Gautham, Mrinmoy Roy, D.S.Shankar Rao, C. V. Yelamaggad,
      Jwo-Huei Jou* and Achalkumar Ammathnadu Sudhakar*

      Chemistry A European Journal, 2024, e202304333 (1-10)

(100) Exploring the ambipolar charge carrier mobility, mesomorphic and gel propertes in nitrile extended quinoxaline
and phenanthro[a]phenazine discotic liquid crystals

Alakananda Patra, Paresh Kumar Behera, Asmita Shah, Dharmendra Pratap Singh, V. A. Raghunathan and            Achalkumar Ammathnadu Sudhakar and Sandeep Kumar  ACS Applied Electronic Materials, 2024, 6, 4891-4902.

(98) Bright green electroluminescence with an EQE of 4.6% from a host-guest OLED fabricated from an unsymmetric liquid crystalline N-annulated perylene ester imide as a dopant

Paresh Kumar Behera, Feng Rong Chen, Jwo-Huei   Jou* and Achalkumar Ammathnadu Sudhakar*,
J.Mater. Chem.C., 2024, 12, 8282-8286.

(106) Solution processable Se-annulated Swallow Tail Perylene Bisimide Exhibiting Room Temperature Columnar Phase and Efficient Ambipolar Charge Carrier Mobility

Paresh Kumar Behera, Kajal Yadav,  D.S.Shankar Rao, Upendra Kumar Pandey* and Achalkumar Ammathnadu Sudhakar* Chemistry A European Journal, 2025, e202402557 (1-10). (with Coverpage)

(101) Columnar self-assembled heteroatom bay-annulated perylene bisimide as passivating layer for higher performance in pervoskite solar cells

Kajal Yadav, Paresh Kumar Behera, Ankita,  Tarun, Rohit D. Chavan, Pankaj Yadav, D.S.Shankar Rao, Achalkumar Ammathnadu Sudhakar* and Upendra Kumar Pandey* Solar Energy, 2024, 278, 112762 (1-8).

(104) Synthesis of pyrrolo[2,1-a] isoquinolinines using CuNPs decorated microcrystalline cellulose in 2-methyl THF: A biodegradable heterogeneous nanocatalyst for the sustainable cascade approach

Nandish Talapada, Anuj S Sharma,  Vinay S Sharma*,  Rahul Ahmed, Pranav S Srivastav*,  Achalkumar Ammathnadu                    Sudhakar and Rajender S Varma,  Molecular Catalysis, 2024, 569, 114569 (1-12)

(103) Unveiling the yellow electroluminescence (EQEmax:5.4%) of an unsymmetrical perylene diester imide

Paresh Kumar Behera, Sushanta Lenka,  Mrinmoy Roy, Feng-Rong Chen, Wei-Zhu Lin,  Pei-En Jan, Hao-Wu Lin, Jwo-Huei   Jou* and Achalkumar Ammathnadu Sudhakar*,  ACS Applied Optical Materials, 2024, 2, 2221-2228.

(105) Coumarin based fluorescent liquid crystal dimers: Synthesis, mesogenic, photophysical behavior and DFT studies

Banti Baishya, Sadhana Barman, Mrinmoy Roy, Utpal Sarkar, Sudip Choudhury, Achalkumar Ammathnadu Sudhakar and Manoj Kumar Paul*, Journal of Molecular Liquids, 2025, 417, 126691 (1-13).

(110) Novel class of hole transporting columnar liquid crystals based on cyclic dipeptide and isatin hybrids

Rahul Ahmed, Paresh Kumar Behera, Anjana K N, Anitha B, Alakananda Patra, Sandeep Kumar,

Manoj A. G. Namboothiry* and Achalkumar Ammathnadu Sudhakar*, ChemPhysChem, 2025, e202400980 (1-11) (with Coverpage)

(107) Microscrystalline cellulose and cellulose nanocrystals: ecofriendly and sustainable suport materials in heterogeneous nanocatalysts for green organic transformation

           Vinay S Sharma,  Saloni Mishra, Anuj Sharma, Neha Sharma, Rajender S Verma, Pranav S Srivastav*, 
            Achalkumar Ammathnadu Sudhakar* Asian J. Org. Chem. 2025, e202400856 (1-41). (with Coverpage)

(108) Polymer electrolytes: Evolution, challenges and future directions for lithium ion batteries

           Ram Prasanth S, Varadarajan Prasannavenkadesan,  Vimal Katiyar, Achalkumar Ammathnadu Sudhakar*
           RSC Applied Polymers. 2025, D4LP00325J. (with Coverpage)

(109) New azo-functionalized symmetrical liquid crystal dimers: Synthesis, photophysical studies, mesomorphism and DFT studies

           Banti Baishya, Amit Kumar Pradhan, Abhijit Paul, Arghyadeep Bhattacharya, Homen Dalal, Mrinmoy Roy,  Achalkumar Ammathnadu Sudhakar, Manoj Kumar Paul*Dyes and Pigments, 2025, 235, 112652 (1-17).

(111) Shedding light on highly emissive room temperature liquid crystalline unsymmetrical S-annulated perylene diester imide exhibiting greenish yellow electroluminescence (EQEmax - 6.9%)

Paresh Kumar Behera, Sushanta Lenka, Feng-Rong Chen, Mrinmoy Roy, Lu Chun-Chang, Jwo-Huei Jou* and Achalkumar Ammathnadu Sudhakar*

Submitted

(112) Room temperature fluorescent n-type columnar liquid crystals based on perylene hydrazides

Paresh Kumar Behera, Sushanta Lenka, Feng-Rong Chen, Mrinmoy Roy, Lu Chun-Chang, Jwo-Huei Jou* and Achalkumar Ammathnadu Sudhakar*

Submitted

(113) Phenoxazine-based ambipolar luminescent room-temperature liquid crystals capable of bioimaging applications

Rahul Ahmed, Anjana K N, Vinay Sharma, Shweta Thakar, Paresh Kumar Behera, Dharmendra Adak, D. S. Shankar Rao,  Manoj G. Namboothiry* and Achalkumar Ammathnadu Sudhakar*

Submitted

(20) Thermodynamic and electrical characteristics of the twisted grain boundary phases of 4-n-dodecyloxy-4’-(cholesteryloxy-carbonyl-1-butyloxy) chalcone, V. S. Pandey, *R. Dhar, A. K. Singh, A. S. Achalkumar, C.V. Yelamaggad                                                                                                          Phase Transitions, 2010, Vol. 83, No. 12, 1049–1058.

22. (22)Synthesis of nitrilotracetic acid terminated tethers for the binding of His-tagged proteins to lipid bilayers and to gold, A. S. Achalkumar*,  R. J. Bushby, S. D. Evans, Tetrahedron, 2011, 67, 6246-6251

(21) Controlling Liquid Crystal Alignment Using Photocleavable Cyanobiphenyl Self-Assembled Monolayers   P. Prompinit, A.S. Achalkumar, J. P.  Bramble, R. J. Bushby, C. Wälti, *S. D. Evans                                                                                                                           ACS Applied Materials and Interfaces, 2010, Vol. 2, No. 12,  3686–3692.

(19) Tunable Chiral Reaction Media Based on Two-Component Liquid Crystals : Regio-, Diastereo-, and Enantio-Controlled Photo-Dimerization of Anthracenecarboxylic Acids, *Y. Ishida, A. S. Achalkumar, S. Kato, Y. Kai, A. Misawa, Y. Hayashi, K. Yamada, Y. Matsuoka, M. Shiro, K. Saigo, J. Am. Chem. Soc., 2010, 132, 17435–17446.

(18) Cholesterol-based anchors and tethers for phospholipid bilayers and for model biological membranes, A. S. Achalkumar, *R. J. Bushby, S. D. Evans, Soft Matter, 2010, 6, 6036-6051.  One among the top 10 most accessed articles in 2010

(17) Improved Photoreaction Yields for Soft Ultraviolet Photolithography in Organothiol Self-Assembled Monolayers,        P. Prompinit, A. S. Achalkumar, X. Han, R. J. Bushby, C. Wälti, S. D. Evans, J. Phys. Chem. C,  2009, 113, 21642–21647.

(16) A Self-assembly route for double bilayer lipid membrane formation on solid supports, X. Han, A. S. Achalkumar, S. Connell, B. Jonson, R. J. Bushby, *S. D. Evans, ChemPhysChem, 2010, 11, 569 – 574.

(15) Characteristics of electrical properties of wide temperature range TGB phases in liquid crystal dimers, *R. Dhar, M. B. Pandey, V. S. Pandey, A. S. Pandey, I. M. L. Das, A. S. Achalkumar, C. V. Yelamaggad, Opto−Electron. Rev., 2009, 17, no. 2, 144-149.

(14) A cholesterol- based tether for creating  photopatterned lipid  membrane arrays on both a silica and gold surface, X. Han, A. S. Achalkumar,  R. J. Bushby, R. J.,  *S. D. Evans, Chem. Eur. J., 2009, 15, 6363 – 6370. Coverpage VIP article

(13) Luminescent, liquid crystalline tris(N-salicylideneaniline)s: Synthesis and characterization,  *C. V. Yelamaggad, A. S. Achalkumar, D.  S. Shankar Rao, S. Krishna Prasad, J. Org. Chem., 2009, 74, 3168–3171.

(12) Dielectric spectroscopy of unsymmetrical liquid crystal dimers showing wide temperature range TGBA and TGBC* phases, A. S. Pandey, *R. Dhar, M. B. Pandey, A. S. Achalkumar, C. V. Yelamaggad, Liquid Crystals, 2009, 36, No. 1, 13-19.

(11) The first examples of discotic radicals: the columnar mesomorphism in spin-carrying triphenylenes, *C. V. Yelamaggad, A. S. Achalkumar, D. S. Shankar Rao, M. Nobusawa,  H. Akutsu, J. Yamada, S. Nakatsuji,  J. Mater. Chem., 2008, 18, 3433–3437.

(10) Frequency and temperature dependence of the dielectric parameters of wide temperature range TGBA and TGBC* phases of unsymmetrical liquid crystal dimers,  M. B. Pandey, *R. Dhar,  A. S. Achalkumar, C. V. Yelamaggad

Phase Transitions, 2008, 81, No. 5, 449–458.

(9) Characteristic dielectric behaviors of the wide temperature range twist grain boundary phases of unsymmetrical liquid crystal dimers, M. B. Pandey, *R. Dhar,  A. S. Achalkumar, C. V. Yelamaggad, J.Phys.:Condens. Matter., 2007, 19, 436219(12).

(8) The first examples of optically active tris(N-salicylideneaniline)s: Manifestation of chirality from molecules to columnar phases, * C. V. Yelamaggad, A. S. Achalkumar, D. S. Shankar Rao, S. Krishna Prasad, J. Mater. Chem. 2007, 17, 4521–4529.

(7) A new family of fluorescent discotic liquid crystals derived from tris(N-salicylideneaniline)s                                                                 *Yelamaggad, C. V., Achalkumar, A. S., D. S. Shankar Rao, S. Krishna Prasad, J. Org. Chem., 2007, 72, 8308-8318.

(6) Monodispersive linear supermolecules stabilizing unusual fluid layered phases                                                                                  *Yelamaggad, C. V., Achalkumar, A. S., D. S. Shankar Rao, S. Krishna Prasad, Org. Lett., 2007, 9, 2641-2644.

5. (5)Frustrated Liquid Crystals: synthesis and mesomorphic behavior of unsymmetrical dimers possessing chiral and fluorescent entities, *C. V. Yelamaggad, N. L. Bonde, A. S. Achalkumar, D. S. Shankar Rao, S. Krishna Prasad, A. K. Prajapati, Chem. Mater., 2007, 19, 2463-2472.

(26) Electrical Behaviour of Twist Grain Boundary Phases of 4-n-dodecyloxy- 4'-(cholesteryloxy-carbonyl-1-butyloxy) chalcone , A. S. Pandey, *R. Dhar,  A.S. Achalkumar, C.V. Yelamaggad, The Open Crystallography Journal, 2011, 4, 49-58

(25) Thermodynamic, optical and dielectric properties of the twisted grain boundary phases of the homologous series of 4-n-alkyloxy-4’-(cholesteryloxycarbonyl-1-butyloxy)chalocone,  A. S. Pandey, *R. Dhar,  A.S. Achalkumar, C.V. Yelamaggad, Liquid Crystals, 2011, 38 (6), 775-784

(24) Guest-Responsive Covalent Frameworks by the Cross-Linking of Liquid Crystalline Salts:  Tuning of Lattice Flexibility by the Design of Polymerizable Units, *Y. Ishida, H. Sakata, A. S. Achalkumar, K. Yamada, Y. Matsuoka, N. Iwahashi, S. Amano, K. Saigo    Coverpage article  Chem. Eur. J., 2011, 17, 14752-14762

(23) Nonconvetional liquid crystals: synthesis and mesomorphism of nonsymmetric trimers and tetramers derived from cholesterol     A. S. Achalkumar, U. S. Hiremath, D. S. Shankar Rao, C. V. Yelamaggad* Invited review Liquid Crystals, 2011, 38 (11-12) 1563-1589

PATENTS

1) Prompinit, P., Evans, S. D., Bushby, R. J., and Achalkumar, A. S.,

Preparation and treatment of molecular thin coated structures, in particular self-assembled  monolayers

UK Patent Appl. no. 0917396.4 (ref. 09054-GB-P1)

2) Marlin Baral, S. Krishna Prasad, Himali Patel, A. S. Achalkumar, C. V. Yelamaggad

A method of enhancement of photoluminescence in a chiral nematic liquid crystal

Indian Patent (Application no. 201741020498 and the filing date is 12/06/2017, Patent Number 421782)

3) Geetha G. Nair, V. M. Vaisakh, A. S. Achalkumar, Balaram Pradhan, C. V. Yelamaggad

A nematic liquid crystal composite with enhanced photoluminescence and method thereof

Indian Patent (Application no. 201741029031 and the filing date is 16/08/2017, Patent Number 518090)

4. 4)A. S. Achalkumar, Paresh Kumar Behera
   

    A self-assembled semiconducting organic compound and a method of preparation thereof

   Indian Patent (Application no. 202431029831 and the filing date is 12/04/2024, Patent Number 560357)

5) Om Dalal, Parth Parmar, Rahul Ahmed, Vinay Sharma, Achalkumar Ammathnadu Sudhakar, Mallika Sanyal, Pranav S. Srivastav

    A facile base-free one-pot green and sustainable synthesis of Coumarin-3-carboxylic acid derivatives using recyclable deep eutectic solvents thereof (Submitted)

6) Sweety Sojitra, Parth Parmar, Vinay Sharma, Rahul Ahmed, Jaimin Panchal, Achalkumar Ammathnadu Sudhakar, Mallika Sanyal, Pranav S. Srivastav

   Process for Knoevenagel-Doebner Condensation Using Recyclable Deep Eutectic Solvents as Green Catalysts and Reaction Media (Submitted)

7. 7)Sweety Sojitra, Parth Parmar, Vinay Sharma, Rahul Ahmed, Anuj Sharma,  Achalkumar Ammathnadu Sudhakar, Mallika Sanyal, Pranav S. Srivastav
   

  Iron catalysed sustainable synthesis of substituted quinazolinone derivatives by using biodegradable deep eutectic solvents (Submitted)

8) Sweety Sojitra, Parth Parmar, Vinay Sharma, Rahul Ahmed, Jaimin Panchal,  Achalkumar Ammathnadu Sudhakar, Mallika Sanyal, Pranav S. Srivastav

  An improved process for the synthesis of cinnamic acid derivatives by using green deep eutectic solvent (Submitted)

9) Sweety Sojitra, Vinay Sharma, Rahul Ahmed, Hitendra Mali, Anuj Sharma,   Achalkumar Ammathnadu Sudhakar, Mallika Sanyal, Pranav S. Srivastav

  A process for the synthesis of pyrrolo(2, 1-a)isoquinolines derivatives by using deep eutectic solvents (Submitted)

(2) Glass-forming organic radical compounds with cholesterol and benzylideneamine cores                                                                             H. Kinoshita, M. Hata, A. S. Achalkumar, C. V. Yelamaggad, H. Akutsu, J. Yamada,  *S. Nakatsuji, Tetrahedron Lett., 2005, 46, 6701–6703.

(1) Self-assembly of C3h and Cs symmetric keto-enamine forms of tris(N-salicylideneaniline)s into columnar phases: a new family of discotic liquid crystals

*C. V. Yelamaggad, A. S. Achalkumar, D. S. Shankar Rao, S. Krishna Prasad, J. Am. Chem. Soc., 2004, 126, 6506.

(3) Liquid crystal Abrikosov flux phase: The exclusive wide thermal range enantiotropic   occurrence,                                 *C. V. Yelamaggad, A. S. Achalkumar, N. L. Bonde, A. K. Prajapati, Chem. Mater., 2006, 18, 1076-1078.

4. (4)Tris(N-salicylideneaniline)s [TSANs] exhibiting room temperature columnar mesophase: synthesis and characterization,*C. V. Yelamaggad, A. S. Achalkumar, Tetrahedron Lett., 2006, 47, 7071-7075.