Pradipta Purkayastha

Professor
Dept: Chemical Sciences (DCS)
E-mail: ppurkayastha [at] iiserkol.ac.in

All Publications:

  1. Ghosh, Ashutosh; Seth, Sourav Kanti and Purkayastha, Pradipta. 2018."Surfactant and Cyclodextrin Induced Vesicle to Micelle to Vesicle Transformation in Aqueous Medium." Langmuir, 34, 11503
  2. Banerjee, Rajashree and Purkayastha, Pradipta. 2018."Interaction of coumarin 6 with carbon nanotubes: Disintegration of the microcrystalline state by surfactant aggregation on the nanotube surface." J. Mol. Liq., 271, 397-402
  3. Ghosh, Ashutosh; Seth, Sourav Kanti and Purkayastha, Pradipta. 2018."A Pyrene-Benzothiazole Probe that is Ultrasensitive to the Environment Polarity and Its Own Characteristics." ChemistrySelect, 3, 8942–8946
  4. Ghosh, Ashutosh; Seth, Sourav Kanti and Purkayastha, Pradipta. 2018."Undulation induced tuning of electron acceptance by edge-oxidized graphene oxide." Spectrochim. Acta A, 204, 425-431
  5. Halder, Dipanjan and Purkayastha, Pradipta. 2018."A flavonol that acts as a potential DNA minor groove binder as also an efficient G-quadruplex loop binder." J. Mol. Liq., 265, 69-76
  6. Bhunia, Soumyadip; Kumar, Sumit and Purkayastha, Pradipta. 2018."Gold Nanocluster-Grafted Cyclodextrin Suprastructures: Formation of Nanospheres to Nanocubes with Intriguing Photophysics." ACS Omega, 3, 1492-1497
  7. Purkayastha, Pradipta. 2018."Photophysical modulations of biologically potent small molecules in biocompatible microheterogeneous environments created by cyclodextrins and lipid vesicles." Indian J. Chem. B, 57, 254-264
  8. Banerjee, Rajashree and Purkayastha, Pradipta. 2017."Piecemeal Rekindling of Coumarin 6 Fluorescence on Stepwise Unfolding of Protein by Surfactant." J. Phys. Chem. B, 121, 11449
  9. Ghosh, Ashutosh and Purkayastha, Pradipta. 2017."Surface Hovering of Probe on Cyclodextrin Nanoparticle that is Otherwise Sequestered in Isolated Cyclodextrin Cavity." ChemistrySelect, 2, 9679-9683
  10. Santra, Kakali and Purkayastha, Pradipta. 2017."Combination of hollow fluorescent carbon and gold nanoparticles: A super-catalyst." Spectrochim. Acta A, 191, 221-225
  11. Das, Shrabanti; Seth, Sourav Kanti; Gupta, Parna and Purkayastha, Pradipta. 2017."Intriguing interaction of a cyclometalated dinuclear Ir(III) complex bridged by imidazoyl phenanthroline with anionic and cationic lipid vesicles." J. Lumin., 192, 1196-1202
  12. Das, Shrabanti and Purkayastha, Pradipta. 2017."Modulating Thiazole Orange Aggregation in Giant Lipid Vesicles: Photophysical Study Associated with FLIM and FCS." ACS Omega, 2, 5036-5043
  13. Banerjee, Rajashree and Purkayastha, Pradipta. 2017."Revival of nearly extinct fluorescence of coumarin 6 in water and complete transfer of energy to rhodamine 123." Soft Matter, 13, 5506-5508
  14. Das, Shrabanti and Purkayastha, Pradipta. 2017."A Fluorescence Lifetime Imaging Microscopy Supported Investigation on Temperature-Dependent Penetration of Dopamine in a 1,2-Ditetradecanoyl-sn-glycero-3-phospho-(1?-rac-glycerol) Lipid Bilayer." Langmuir, 33, 7281-7287
  15. Das, Shrabanti and Purkayastha, Pradipta. 2017."Selective binding of Thioflavin T in sequence exchanged single strand DNA oligomers and further interaction with phospholipid membranes." Chem. Select, 2, 5000-5007
  16. Seth, Sourav Kanti; Gupta, Parna and Purkayastha, Pradipta. 2017."Efficiency of photoinduced electron transfer in mono- and di-nuclear iridium complexes: a comparative study." New J. Chem., 41, 6540-6545
  17. Das, Shrabanti and Purkayastha, Pradipta. 2017."Gold Nanocluster Protection of Protein from UVC Radiation: A Model Study on Bovine Serum Albumin." ACS Omega, 2, 2451–2458
  18. Seth, Sourav Kanti; Mandal, Soumik; Srikanth, K.; Purkayastha, Pradipta and Gupta, Parna. 2017."Electronic Description of the Photophysics of Homo- and Heterodinuclear Cyclometallated Iridium and Rhodium Complexes." Eur. J. Inorg. Chem., 2017, 873-880
  19. Banerjee, Rajashree; Mondal, Somen and Purkayastha, Pradipta. 2016."Revival, enhancement and tuning of fluorescence from Coumarin 6: combination of host-guest chemistry, viscosity and collisional quenching." RSC Advances, 6, 105347
  20. Mondal, Somen and Purkayastha, Pradipta. 2016."?-cyclodextrin functionalized carbon dots: Pronounced photoinduced electron transfer by aggregated nanostructures." J. Phys. Chem. C, 120, 14365
  21. Das, Tarasankar; Poria, Dipak Kumar and Purkayastha, Pradipta. 2016."NIR-emitting chiral gold nanoclusters coated with gamma-cyclodextrin are pH sensitive: Application as biomarker." Nanomedicine, 12, 1105–1112
  22. Das, Shrabanti; Maity, Arnab and Purkayastha, Pradipta. 2015."Effect of environment pH on the photophysics of fisetin in solid lipid nanoparticles." J. Photochem. Photobiol. B: Biology, 153, 305-310
  23. Mondal, Somen; Seth, Sourav Kanti; Gupta, Parna and Purkayastha, Pradipta. 2015."Ultrafast Photoinduced Electron Transfer between Carbon Nanoparticles and Cyclometalated Rhodium and Iridium Complexes." J. Phys. Chem. C, 119, 25122
  24. Seth, Sourav Kanti; Mandal, Soumik; Purkayastha, Pradipta and Gupta, Parna. 2015."Cyclometalated mono and dinuclear rhodium(III) and iridium(III) complexes with imidazolyl phenanthrolines: Synthesis, photophysical and electrochemical studies." Polyhedron, 95, 14-23
  25. Mondal, Somen; Das, Tarasankar; Maity, Arnab; Seth, Sourav Kanti and Purkayastha, Pradipta. 2015."Synergic influence of reverse micelle confinement on enhancement in photoinduced electron transfer to and from carbon nanoparticles." J. Phys. Chem. C, 119, 13887
  26. Mondal, Somen; Das, Tarasankar; Ghosh, Prasun; Maity, Arnab; Mallick, Arabinda and Purkayastha, Pradipta. 2015."Surfactant chain length controls photoinduced electron transfer in surfactant bilayer protected carbon nanoparticles." Mater. Lett., 141, 252–254
  27. Das, Tarasankar; Maity, Arnab; Mondal, Somen and Purkayastha, Pradipta. 2015."Modulation of energy/electron transfer in gold nanoclusters by single walled carbon nanotubes and further consequences." Spectrochim. Acta A, 141, 144-148
  28. Nag, Tarak Nath; Das, Tarasankar; Mondal, Somen; Maity, Arnab and Purkayastha, Pradipta. 2015."Promoting the “water-wire” mechanism of double proton transfer in [2,2'-Bipyridyl]-3,3'-diol by porous gold nanoparticles." Phys. Chem. Chem. Phys., 17, 6572-6576
  29. Ghosh, Prasun; Das, Tarasankar; Maity, Arnab; Mondal, Somen and Purkayastha, Pradipta. 2015."Incorporation of Coumarin 6 in cyclodextrins: Microcrystals to lamellar composites." RSC Adv., 5, 4214-4218
  30. Kedia, Niraja; Sarkar, Amrita; Purkayastha, Pradipta and Bagchi, Sanjib. 2014."An electronic spectroscopic study of micellisation and solvation of homomicelles formed by cationic or anionic surfactants using a solvatochromic electron donor acceptor dye." Spectrochim. Acta A, 131, 398-406
  31. Ghosh, Prasun and Purkayastha, Pradipta. 2014."Selective interaction of methylindoloquinolines with DNA." RSC Adv., 4, 22442
  32. Sarkar, Amrita; Kedia, Niraja; Purkayastha, Pradipta and Bagchi, Sanjib. 2014."Spectroscopic study on encapsulation of two structurally similar donor–acceptor dyes in model cyclodextrin nanocavity." J. Mol. Struct., 1068, 228-236
  33. Mondal, Somen; Chatti, Manjunath; Mallick, Arabinda and Purkayastha, Pradipta. 2014."pH triggered reversible photoinduced electron transfer to and from carbon nanoparticles." Chem. Commun., 50, 6890-6893
  34. Kedia, Niraja; Sarka, Amrita; Purkayastha, Pradipta and Bagchi, Sanjib. 2014."Probing aggregation and encapsulation behaviour of structurally akin ketocyanine dyes in aqueous media containing ?-cyclodextrin: A spectroscopic analysis.." J. Mol. Liq., 195, 259–266
  35. Sarkar, Amrita; Kedia, Niraja; Purkayastha, Pradipta and Bagchi, Sanjib. 2014."UV–Vis spectral investigation of photophysical properties of a solvatochromic electron donor/acceptor dye within a reverse micelle domain." Chem. Phys. Lett., 592, 138-143
  36. Maity, Arnab; Das, Shrabanti; Ghosh, Prasun; Das, Tarasankar; Seth, Sourav Kanti; Mondal, Somen; Gupta, Parna and Purkayastha, Pradipta. 2013."Dynamics of pyrenesemicarbazide and pyrenethiosemicarbazide in reverse micelle of AOT in n-heptane: Probing critical penetration of water molecules toward the palisade." Chem. Phys. Lett., 587, 30-34
  37. Ghosh, Prasun; Maity, Arnab; Das, Tarasankar; Mondal, Somen and Purkayastha, Pradipta. 2013."(2,2?-Bipyridyl)-3-3?-diol in lipid vesicles: Slowed down dynamics of proton transfer." Soft Matter, 9, 8512-8518
  38. Mondal, Somen; Das, Tarasankar; Ghosh, Prasun; Maity, Arnab; Mallick, Arabinda and Purkayastha, Pradipta. 2013." FRET-based characterisation of surfactant bilayer protected core-shell carbon nanoparticles: Advancement toward carbon nanotechnology." Chem. Commun., 49, 7638-7640
  39. Maity, Arnab; Das, Shrabanti; Mandal, Soumik; Gupta, Parna and Purkayastha, Pradipta. 2013."Interaction of semicarbazide and thiosemicarbazide pyrene derivatives with anionic and cationic micelles: Changed character of pyrene due to alteration in charge density induced by the side chains." RSC Adv., 3, 12384
  40. Mondal, Somen; Das, Tarasankar; Ghosh, Prasun; Maity, Arnab and Purkayastha, Pradipta. 2013."Exploring the interior of hollow fluorescent carbon nanoparticles." J. Phys. Chem. C, 117, 4260-4267
  41. Das, Tarasankar; Ghosh, Prasun; Shanavas, M. S.; Maity, Arnab; Mondal, Somen and Purkayastha, Pradipta. 2012."Cyclodextrin cavity size induced formation of superstructures with embedded gold nanoclusters." RSC Adv., 2, 12210
  42. Ghosh, Prasun; Das, Tarasankar; Maity, Arnab and Purkayastha, Pradipta. 2012."Light induced dynamics of charge transfer probe in lipid vesicles." Soft Matter, 8, 10178
  43. Das, Tarasankar; Ghosh, Prasun; Shanavas, M. S.; Maity, Arnab; Mondal, Somen and Purkayastha, Pradipta. 2012."Protein-templated gold nanoclusters: Size dependent inversion of fluorescence emission in presence of molecular oxygen." Nanoscale, 4, 6018-6024
  44. Ghosh, Prasun; Mandal, Soumik; Das, Tarasankar; Maity, Arnab; Gupta, Parna and Purkayastha, Pradipta. 2012."“Extra stabilisation” of pyrene based molecular couple by gamma-cyclodextrin in excited electronic state." Phys. Chem. Chem. Phys., 14, 11500
  45. Kedia, Niraja; Sarkar, Amrita; Purkayastha, Pradipta and Bagchi, Sanjib. 2012."Ketocyanine dyes as sensors for proticity and pH of a medium." Spectrochim. Acta A, 95, 569–575
  46. Sarkar, Amrita; Kedia, Niraja; Purkayastha, Pradipta and Bagchi, Sanjib. 2012."Photophysics of two structurally similar dyes containing substituted amino as donor and carbonyl as acceptor groups." J. Lumin., 132, 2345–2354
  47. Purkayastha, Pradipta; Jaffer, Syed S. and Ghosh, Prasun. 2012."Physicochemical perspective of cyclodextrin nano and micro aggregates." Phys. Chem. Chem. Phys., 14, 5339-5348
  48. Maity, Arnab; Mukherjee, Puspal; Das, Tarasankar; Ghosh, Prasun and Purkayastha, Pradipta. 2012."Förster resonance energy transfer between pyrene and bovine serum albumin: Effect of the hydrophobic pockets of cyclodextrins." Spectrochim. Acta A, 92, 382–387
  49. Ghosh, Prasun; Maity, Arnab; Das, Tarasankar; Dash, Jyotirmoyee and Purkayastha, Pradipta. 2011."Modulation of small molecule induced architecture of cyclodextrin aggregation by guest structure and host size." J. Phys. Chem. C, 115, 20970
  50. Maity, Arnab; Ghosh, Prasun; Das, Tarasankar; Dash, Jyotirmoyee and Purkayastha, Pradipta. 2011."Interaction of a new surface sensitive probe compound with anionic surfactants of varying hydrophobic chain length." J. Colloid Interface Sci., 364, 395–399
  51. Maity, Arnab; Ghosh, Prasun; Mandal, Soumik; Das, Tarasankar; Gupta, Parna and Purkayastha, Pradipta. 2011."Interaction of a “nido”-ruthenium terpyridylaminecomplex with charged elongated micellar scaffolds." Coll. Surf. B, 88, 641-647
  52. Maity, Arnab; Das, Tarasankar; Ghosh, Prasun and Purkayastha, Pradipta. 2011."Compromise between compactness of micelle and overlap integral toward Förster resonance energy transfer from an indoloquinoline derivative to fluorescein: A fluorometric study." Chem. Phys. Lett., 508, 231-234
  53. Sarkar, Amrita; Kedia, Niraja; Purkayastha, Pradipta and Bagchi, Sanjib. 2011."Synthesis and spectroscopic investigation of a novel solvatochromic dye." J. Lumin., 131, 1731-1738
  54. Maity, Arnab; Jaffer, Syed S.; Das, Tarasankar; Ghosh, Prasun and Purkayastha, Pradipta. 2011."Orientation of a TICT probe trapped in the peripheral confined water created by ionic surfactant envelope around silver nanoparticles." Langmuir, 27, 4068–4075
  55. Ghosh, Prasun; Jaffer, Syed S. and Purkayastha, Pradipta. 2011."Effect of cyclodextrins on the photophysics of three indoloquinoline derivatives: An intriguing fluorometric study." J. Phys. Chem. B, 115, 2046–2054
  56. Jaffer, Syed Syed; Ghosh, Prasun and Purkayastha, Pradipta. 2011."Mechanistic pathway for controlled extraction of guest molecule bound to herring sperm DNA using ?-cyclodextrin." Spectrochim. Acta A, 78, 1587–1591
  57. Das, Tarasankar; Kumar, Abhishek; Ghosh, Prasun; Maity, Arnab; Jaffer, Syed S. and Purkayastha, Pradipta. 2010."Interaction of twisted intramolecular charge transfer probe loaded silver nanoparticles with the hydrophobic nanocavities of cyclodextrins." J. Phys. Chem. C, 114, 19635
  58. Ghosh, Prasun; Jaffer, Syed S.; Das, Tarasankar; Maity, Arnab; Kumar, Maruthi; Kumar, Dalip and Purkayastha, Pradipta. 2010."Solvatochromic study of three indoloquinoline derivatives: Effect of chloro group/s on the photophysics of the compounds." J. Lumin., 131, 147-154
  59. Jaffer, Syed S.; Ghosh, Prasun; Das, Anindita and Purkayastha, Pradipta. 2010."Opening of DNA double helix at room temperature: Application of ?-cyclodextrin self-aggregates." Nanoscale, 2, 1420-1422
  60. Purkayastha, Pradipta. 2010."Cu2+ induced charge transfer switch by choosing the right cyclodextrin environment." J. Photochem. Photobiol. A: Chem., 212, 43-48
  61. Jaffer, Syed S. and Purkayastha, Pradipta. 2009."Steady state fluorescence spectroscopic technique revealing the thermodynamics of fragmentation of compound induced ?-cyclodextrin nanotubular suprastructures." J. Colloid Interface Sci., 342, 57-61