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Prof. Jayanty Subbalakshmi

Head & Professor,
Department of Chemistry

Characterisation and study of new Molecular Materials for Optical, Conducting and Biological applications, Design, Synthesis
Department of Chemistry
Chamber No. B112
Birla Institute of Technology and Science-Pilani, Hyderabad Campus
Jawahar Nagar, Kapra Mandal, Medchal-Malkajgiri District
Hyderabad-500078

Publications

  1. Bommi Siva GaneshSubbalakshmi Jayanty,* Suresh Kola, Venkata Siva Rama Krishna Reddy Kallam, Systematic Development of a Gradient Elution HPLC Method for the Analysis of Voxelotor and Its Structurally Related Substances Applying Analytical Quality by Design Approach, Chromatographia, Springer Nature 2024. DOI : 10.1007/s10337-024-04378-0

  2. Anuradha Mohitkar, Nilanjan Dey, Subbalakshmi Jayanty. Self -Assembled Tetracyanoquinodimethane Derivatived: Differential Fluorescent Responses on Sensing Copper and Mercury ions in aqueous medium. RSC Sustainability, 2024, 10.1039/D4SU00445K

  3. Ravi S, Karthikeyan S, Mohitkar A, Jayanty S, Pannipara M, Al-Sehemi AG, Moon D, Anthony SP. Red-emitting ionic fluorophores: anion-dependent tunable fluorescence, chlorinated solvent sensing, white light emission and latent fingerprinting. Journal of Materials Chemistry C, 2024, 12(37), 15004-11. https://doi.org/10.1039/D4TC01909A

  4. Anuradha Mohitkar, Melchi, C, Subbalakshmi Jayanty. Utilization of 7,7-bis(N,N-diethylethylenediamino)-8,8-dicyanoquinodimethane molecular crystal as an organic optical waveguide. Optical Materials, 2024, 153, 115578-115583 (6 pages) https://doi.org/10.1016/j.optmat.2024.115578
  5. Himabindu, B., Srivarsha B., Vamsikrishna Venuganti, V., Subbalakshmi Jayanty. Rhodamine B Amide Derivatives with Anticancer Activity and Fluorescence Properties for Potential Theranostic Applications, Chemistry Select, 2024,9, e 202302367(1-15), DOI: 10.1002/slct.202302367.
  6. Anuradha Mohitkar, Renuka H, Sanket G, Subbalakshmi J. Efficient Standalone Flexible Small Molecule Organic Solar cell Devices: Structure-Performance Relation Among Tetracyanoquinodimethane Derivatives, ACS Omega, 2023, 8, 40836-40847. https://doi.org/10.1021/acsomega.3c05939 
  7. Himabindu, B., Moromi, N., Sabyashachi, M., Subbalakshmi, J. Spirocyclic Rhodamine B Benzoisothiazole Derivative: A Multi-Stimuli Fluorescent Switch Manifesting Ethanol Responsiveness, Photoresponsiveness and Acidochromism, RSC Advances,202313, 5134-5148. https://doi.org/10.1039/D2RA07877E
  8. Gayathri P., Sasikala R., Subramanyan K., Anuradha M., Subbalakshmi J., Mehboobali P., A Abdullah, Dohyun M,m Philip Anthony S.* Thermochromic TADF Boron Complexes: Molecular Thermometer and Alkyl chain Controlled Molecular Fluorescent Liquids, Accepted in New Journal of Chemistry,2023. 47,7288-7298. DOI:10.1039/D2NJ04474A
  9. Sivaganesh, B.; Subbalakshmi, J.*; Satyanarayana Raju, T.; Suresh, K.; Venkata Siva Ramakrishna Reddy, K. Evolution of Stability-Indicating Method in the Quantification of Related Substances and Degradation Products of Elagolix Sodium: Quality by Design Driven Approach Utilizing Ultra-High Performance Liquid Chromatography,  Chromatographia2023, 86, 31-42.DOI : 10.1007/s10337-022-04223-2
  10. Subbalakshmi Jayanty, Tetracyanoquinodimethane based small organic molecules as potential memristor and solar cell devices. Published on 8th August 2023 as Book Chapter 13; in "Miniaturized Electrochemical Devices-Advanced Concepts, Fabrication and Application." https://doi.org/10.1201/b23359.  CRC/Taylor and Francis. 1st Edition e Book ISBN  16 Pages, Publication location Boca Raton. 
  11. Gayathri P., Siva Bala Subramaniyan, A.V., Anwarhussaini SD., Subbalakshmi J., Mehboobali Pannipara, A. G. Al-Sehemi, Dohyun M., Philip Anthony S., * Dark to Bright Fluorescence State by Inter-connecting Fluorophores: Concentration Dependent Blue to NIR Emission and Live Cell Imaging Application New Journal of Chemistry, 2022, 46, 16409-16418. https://doi.org/10.1039/D2NJ03457C
  12. Anwarhussaini, SD., Anuradha, M., Subbalakshmi, J.* Unprecedented Transformation from cyclized zwitterionic oxazolidine derivatives to corresponding non-zwitterionic aromatic amides via Vilsmeir reagent in a one pot reaction: Optical property and Crystallography. New Journal of Chemistry, 2022, 46, 8069-8078. DOI:10.1039/D2NJ00591C.
  13. Anwarhussaini, SD, Renuka H, Anuradha,M, Raghavaiah, P Mahadev Sai Karthik, C, Sanket, G., Subbalakshmi, J*,Photophysical, electrochemical properties and flexible organic solar cell application of 7,7-bis(1-cyclopropyl carbonyl piperazino)-8,8 dicyanoquinodimethane, Material Advances, 2022, 3, 3151-3164. DOI: 10.1039/D1MA00778E.
  14. Himabindu, Battula Sunita, M, Sony Priyanka,B,Shristy, K,Sabyashachi, M, Himanshu, A. Venkata Vamsi Krishna, V,  Subbalakshmi, J.* Selective and swift-responsive rhodamine B based probes: recognition of multi-metal ions, on-site sensing of Fe(III) in water samples and bioimaging under aqueous media, Journal of Photochemistry & Photobiology A: Chemistry, 2022426, 113748-11360.  https://doi.org/10.1016/j.jphotochem.2021.113748.
  15. Anwarhussaini Syed, Sabyashachi Mishra, Subbalakshmi, J.*7,7-bis(N, N-diethylethylenediamino)-8,8-dicyanoquinodimethane: Effect of Ethyl Moiety on the Photophysical Property besides Thermal stability, Journal of Fluorescence, 202232, 115-124. https://doi.org/10.1007/s10895-021-02830-0.
  16. Anwar Hussaini SD, Himabindu, B., Sabyashachi Mishra*and Subbalakshmi, J.* Distinct Tetracyanoquinodimethane derivatives: Enhanced Fluorescence in solutions and unprecedented cation recognition in the solid state. ACS Omega, 2021, 6, 3090-3105. DOI 10.1021/acsomega.0c05486.
  17. Anwarhussaini, SD, Himabindu, D., Yamini, B., Tarun, P., Balaram, G., Subbalakshmi J*“ Unique mono/di-substituted TCNQ derivatives possessing fluorescence property and Anticancer activity. 2021Chemistry Select, 6, 7354-7366. https://doi.org/10.1002/slct.202101721
  18. Himabindu, B., Sivaganesh, B., Yamini, B., Tarun, P., Balaram ghosh,*Subbalakshmi, J.* “Distinct Rhodamine B derivatives exhibiting dual effect of anticancer activity and Fluorescence property, Journal of Photochemistry & Photobiology2021, 6, 100026 -100037. https://doi.org/10.1016/j.jpap.2021.100026.
  19. Himabindu, B., Anwar Hussaini SD, Smriti,R.Nahata, Lipi,D. Patnaik, Santosh,R. Subbalakshmi, J.*Photophysical property and thermal stability of a simple protonated hydrogen bonding complex:3-Amino-5-nitro-[2,1]benzoisothiazole-p-toluenesulfonateJournal of Molecular Structure. 2021, 1225, 129090-129101. doi:10.1016/j.molstruc.2020.129090.
  20. Anwar Hussaini SD, Himabindu B., Pavan Kumar, B., Souvik, K., Chanchal, C., Subbalakshmi, J.*, Photophysical, electrochemical and flexible organic resistive switching memory device application of a small molecule: 7,7-bis(hydroxyethlypiperazino)dicyanoquinodimethane, Organic Electronics.2020, 76, 105457-105468. https://doi.org/10.1016/j.orgel.2019.105457
  21. Sivaganesh, B., Subbalakshmi, J., Satyanarayana Raju, T.; Sivasankar, B. “Quality by design approach to develop stability indicating method to quantify related substances and degradation products of sacubitril by high performance liquid chromatography”, Journal of Chromatographic Science 2020, 58, 844-858.doi.org/10.1093/chromsci/bmaa054
  22. Jayanty Subbalakshmi, Principal Inventorand Co-Inventors: Anwar Hussaiani SD “Compounds for use as anticancer agents and a process for synthesizing the same” Indian Patent filed Application no. 201941002679 on January 29th 2019. (published on July 24 2020)
  23. Jayanty Subbalakshmi, Principal Inventorand Co-Inventors: Himabindu Battula “Novel rhodamine B amides and processes for preparing the same” Indian Patent filed, Application no. 201911020063 on May 21st 2019. (27 November, 2020).
  24. Jyothi Lakshmi, A.; Shantanu, K.; Jayanty, S.*(Chapter in Book: Synthesis and Characterization of Templated polyanilines: A New Class of Polymeric Materials: Chapter 14, Functionalized Engineering Materials and Their Applications Apple Academic PressCRC, Taylor and Francis Group, Published in September 2018. 
  25. T. Yadagiri, R. Santosh., G. Subhas, J. Subbalakshmi,B. Anupam, One-Pot two step Nazarov-Schmidt Rearrangement, for the synthesis of Fused -Lactam Systems, Chemistry Select2017, 2, 9744-9750.
  26. G. Dhruvasamhith, S. M. Hussain., “Polyvinyl Alcohol processed Templated Polyaniline Films: Preparation, Characterization and Assessment of Tensile Strength” International Journal of Chemical, Molecular, Nuclear, Materials and Metallurgical Engineering, J. Subbalakshmi*, 2017Vol. 11, No. 1, Page 60-64.
  27. Subbalakshmi J.*, Dhruvasamhith G., Hussain, S. M. “Polyvinyl Alcohol processed Templated Polyaniline                 Films: Preparation, Characterization and Assessment of Tensile Strength” Conference Proceedings, 2017Vol.           19(1)Page 1417-1421.
  28. Raghavaiah, P., Kuladeep, R., Narayana, Rao, D., Jyothilakshmi, A., Srujana, P., Subbalakshmi, J*.Bis- (1-(2-Amino ethyl) piperidino), (2-(2-Amino ethyl)pyridino) and (1-(2-Amino ethyl)pyrrolidino) substituted dicyanoquinodimethanes: Consequences of flexible ethylene spacers with heterocyclic moieties and amine functionalitiesActa Cryst Section B: Structural Science, Crystal Engineering and Materials, 2016, 72(5), 709-715.
  29. T. Nakamura and S. Jayanty*, Poly (4-styrenesulfonate) templated polyaniline-carboxymethyl cellulose blend: morphology and surface resistivity of the spin coated films. Soft Materials2016, 14, 309-315.
  30. Hunsur Nagendra Nagesh., Amaroju Suresh., Muthyala Nargarjuna Reddy., Narva Suresh., Jayanty Subbalakshmiand Kondapalli Venkata Gowri Chandrasekhar.  Multicomponent cascade reaction: dual role of copper in the synthesis of 1, 2, 3-triazole tethered benzimidazo [1, 2-a] quinolone and their photophysical studiesRSC Adv. 2016, 6, 15884-15894. (Performed photophysical studies for all the molecules).
  31. Madhuri, P., Nikhil Sainath, V., Jayanty, S.  Adasumalli, R. B. “Pulp and Black Liquor Characterization of Subabul Wood after Craftcooking” IPPTA-The Official International Journal of The Indian Pulp and Paper Technical Association, 2016, Vol. 28, No. 2 page 26-38.
  32. S. Jayanty* Carboxymethylcellulose templated polyaniline: Film Morphology and Conductivity. International Journal of energy, sustainability and environmental engineering2015, Vol. 1(4-6), 123- 127.
  33. Arun, B., Jayanty, S.*Supramolecular helical self-assemblies in 1-(2-cyanophenyl piperazine) and 4-piperidinopiperidine bis-substituted tetracyanoquinodimethane fluorophores. Dyes and Pigments2014, 101, 303-311.
  34. K.M.Naidu, A. Suresh,J. Subbalakshmi, D. Sriram, P. Yogeeswari, P. Raghavaiah, K.V.G. Chadrasekhar Design, synthesis and antimycobacterial activity of various 3-(4-(substitutedsulfonyl)piprazin-1-yl)benzo[d]isooxazole derivatives, Eur.J. Med. Chem. 2014, 87, 71-78.
  35. S. Jayanty*Synthesis, Conductivity and Morphology study of Polystyrenesulfonate Templated Tetrathiafulvalene Polyionic Polymers. Applied Science and Advanced Materials International2014,1(2),56-59.
  36. Arun, B.; Jayanty, S.* Raghavaiah, P. Synthesis and studies of a novel (2-Amino, 6-nitrobenzothiazole) co-crystal. Journal of Crystal Growth, 2013, 380, 241. 
  37. Jayanty, S.,Akutagawa, T., Nakamura, T. Cryst.Eng.Comm2012, 12, 4087-4090.Hydrogen bonding Maleate anions as counter anion of tetrathiafulvalene crystals.
  38. Jayanty,S.Akutagawa, T., Nakamura. T. Highly Polar 7,7-bis(N,N-dimethylpiperazinium)-8,8-dicyanoquinodimethane in [Ni(dmit)2Cryst.Eng.Comm, 2010, 12, 4087-4090.
  39. Jayanty, S. Radhakrishnan, T. P. Chem. Eur. J.Enhanced Fluorescence of Remote Functionalized Diaminodicyanoquino­dimethanes in the Solid State and Fluorescence Switching in a Doped Polymer by solvent vaopurs. Chem. Eur. J .2004, 10, 791-797.
  40. Jayanty,S.,Radhakrishnan, T. P. Spontaneous Resolution through Helical Assembly of a Conformationally Chiral Molecule with an Unusual Zwitterionic Structure. Chem. Eur. J. 2004, 10, 2661-2667.
  41. Jayanty, S. Prasad, G. K., Sreedhar, B. Radhakrishnan, T. P. Polyelectrolyte Templated Polyaniline-film morphology and conductivity. Polymer, 200344, 7265-7270.
  42. Jayanty, S. Gangopadhyay, P.,Radhakrishnan, T. P.  Steering Molecular Dipoles from Centrosymmetric to Noncentrosymmetric and SHG Active Assembly Using Remote Functionality and Complexation. J. Mater. Chem.200212, 2792-2797.
  43. Jayanty, S.Radhakrishnan, T. P. Modeling Molecule-in-a-Crystal: The Case of Push-pull Quinonoids. Chem. Mater200113, 2460-2462.
  44. Jayanty, S.Radhakrishnan, T. P. Solid State Charge Transfer Promoted by an Anchoring Agent: A 2-component Analog of Kofler’s Ternary Complex. Chem. Mater. 200113, 2072-2077.
  45. Jayanty, S.,Kumar, D. B. K.,Radhakrishnan, T. P. Structure and Magnetism of a Phenazinium Cyclopentadienide. Synth. Metals, 2000, 114, 37-48.
  46. Jayanty, S.Radhakrishnan, T. P. Core and Sheath’ Structure of a TTF Complex Forming a Square Grid. 1999, 9, 1707-1711.
  • Research work presented at Seminars/ Conferences/ Symposia : 
  • Attended “All Indian Women Academicians Conference” Envisioning New Bharath” Organized by Akhil Bharatiya Rashtriya Shaikshik Mahasangh (ABRSM) in collaboration with Indian Council of Social Science Research (ICSSR) on September 21, 2024 at Tagore Auditorium, Osmania University, Hyderabad
  • Poster presented at the National Conference on “New Frontiers in Chemistry – From Fundamentals to Applications-III” (NFCFA-2019) with the title “Synthesis, Characterization of a new charge-transfer complex of 3-amino,5-nitro - [2,1] benzoisothiazole-p-toluenesulfonate” held at Birla Institute of Technology and Science, Pilani-k. k. Birla Goa Campus on Dec 20-22,2019, poster no.65, page no. 127.
  • Poster presentation at National Symposium on Convergence of Chemistry & Materials (CCM-2019) with the title  “ Synthesis and Characterization of a new charge-transfer complex of substituted Benzoisothiazole-p-toluene sulfonate” at BITS-Pilani, Hyderabad Campus on December 17th.   
  • NFCFA-2019: National Conference on New Frontiers in Chemistry from Fundamentals to Applications, organized by K K Birla campus, GOA INDIA. December 20-22, 2019. Memristor application of   a small organic molecule: 7,7-bis( hydroxyethylpiperazino) dicyanoquinodimethane Anwarhussaini SD, Himabindu Battula, Pavan Kumar Reddy Boppidi, Souvik Kundu, Chanchal Chakraborty, Subbalakshmi Jayanty. (Poster No. 44, Page 106) 18th, 2019.
  • CCM-2019: National Symposium on Convergence of Chemistry and Materials Organized by Department of Chemistry, BITS-Pilani, Hyderabad campus. December 17-18, 2019.Photophysical, electrochemical and organic resistive switching memory device application of a small organic molecule: 7,7-bis( hydroxyethylpiperazino)  dicyanoquinodimethane Anwarhussaini SD, Himabindu Battula, Pavan Kumar Reddy Boppidi, Souvik Kundu, Chanchal Chakraborty, Subbalakshmi Jayanty. (Poster No. 109, page 30).
  • CRSI NSC-24 The 24thCRSI National Symposium in Chemistry, organized by CSIR-Central Leather research Institute. February 8-10, 2019. Consequences of flexible ethylene spacers with heterocyclic moieties and amine functionalities of Disubstituteddicyanoquinodimethanes SD Anwarhussaini and Subbalakshmi Jayanty. (Poster No. 097, Page 97).
  • Chemistry day: In house Symposium, Organized by Department of Chemistry, BITS-Pilani, Hyderabad campus. January 12, 2019.Bis- (1-(2-Amino ethyl)piperidino), (2-(2-Amino ethyl)pyridino) and (1-(2-Amino ethyl)pyrrolidino) substituted dicyanoquinodimethanes: Non-linear optical property. SD Anwarhussaini, B Himabindu, B Shivaganesh and Subbalakshmi Jayanty.
  • Presented Poster on "Synthesis and Characterization of  TCNQ-Picrate Charge transfer complexat the National conference " Convergence of Chemistry and Materials (CCM-2017)" held at BITS-Pilani, Hyderabadcampus during December 21-22, 2017.
  • Presented Poster on "Synthesis and Characterization of 7,7-bis(thiomorpholino)-8,8-dicyanoquinodimethane fluorophore” at the conference on “Conference on Emerging Materials” (CEMAT-2016)held at the Indian Institute of Science, Bangalore during 18-19th July 2016 in Association with Materials Research Society of India (MRSI).
  • S. Jayanty, T. Akutagawa and T. Nakamura, Morphology and variable temperature conductivity study on spin-coated films of carboxymethylcellulose templated polyaniline and poly(4-styrenesulfonate) templated-carboxymethylcellulose blend at the “International Conference on Advancements in Materials, Health and Safety towards Sustainable Energy and Environment (MHS-2014)Chennai, August 7-8, Page 75.
  • Presented a Poster on “Isatin derivatives substituted tetracyanoquinodimethanes: New optical molecular materials” in the 19th ISCB International Conference, March 2-5, 2013Udaipur, Rajasthan, India.
  • Study of Zeigler-Natta Catalysis in Polymer Chemistry, at the BITS-Pilani, Hyderabad campuson February 22nd, 2013.  
  • Presented a Poster on "Copious Short Interactions of NO····H–C–S in [(TTF)(2- Amino-6-nitrobenzothiazole)2] Complex” in 15thCRSI National Symposium in Chemistry, February 1-3, 2013Banaras Hindu university, Varanasi, India.
  • Participated in 7th RSC-CRSI Symposium in Chemistry, January 31, 2013Banaras Hindu university, Varanasi, India.
  • TTF-TCNQ based charge transfer complexes at the Post Graduation Center. Government Arts and Science College, October 25th 2012, Rajahmundry.                                              
  • Poster presented at the 6th Mid year National Symposium of CRSI at CDRI, Lucknow in June2012, U.P. India.
  • Poster presented at the International Conference on LB films, Sapporo,Japan, June, 2005.  Jayanty, S., Prasad, G. K.,Sreedhar, B., Radhakrishnan,T. P.,Akutagawa, T., Nakamura, T. "Polyelectrolyte templated polyaniline film: morphology and conductivity."
  • Participated in the “Japan Chemical Society(JCS) meeting” held at Kanagawa, Japan, March 26-29th2005.
  • "Polyelectrolyte templated polyaniline -Synthesis and morphological studies" at the "Research Institute of electronic sciences" March 2005University of Hokkaido, Sapporo, Japan.
  • Poster presented at the International Conference on “Structural Chemistry” at Hiroshima, Japan, September 27th- 30th , 2004.
  • "Polyelectrolyte templated TTF compounds" at the Research Institute of electronic sciences" June 2004University of Hokkaido, Sapporo, Japan.
  • Poster presented at the National Laser Symposium, University of Hyderabad, December, 1999., Jayanty. S., Ravi, M., Rao, D. N., Radhakrishnan, T. P. "A Rigorous Test of the Salt Model for SHG Active Molecular Materials."