Publications
78. P Sarkar, N Nandi, N Barnwal, K Sahu. BSA-Capped Dual-Emissive Silver Nanoclusters for Detection of IO4– and Cu2+ Ions. ACS Applied Nano Materials 6 (17), 2023, 15851-15859.
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77. T Pal, K Sahu. Effect of salt addition on a triblock copolymer-zwitterionic surfactant assembly: insight from excited-state proton transfer. Physical Chemistry Chemical Physics, 2023, 25 (43), 29816-29830
76. P. Sarkar, N. Nandi, N. Barnwal and K. Sahu. Mercaptopropionic acid-assisted synthesis of green and blue emissive copper nanoclusters for multimodal sensing, logic gate, and white light applications. Mater. Today Chem., 2023, 27, 101341.
75. T. Pal and K. Sahu. Exploring cationic polyelectrolyte–micelle interaction via excited-state proton transfer. Signatures of probe transfer. Phys. Chem. Chem. Phys., 2023, 25, 2963–2977
74. N. Nandi, P. Sarkar, K. Sahu. N-doped carbon dots: triple mode excitation-emission features for dual channel sensing and logic gate application. Mater Today Chem (26) (2022), Article 101015
73. Nandi, N.; Choudhury, K.; Sarkar, P.; Barnwal, N.; Sahu, K. Ratiometric Multimode Detection of pH and Fe3+ by Dual-Emissive Heteroatom-Doped Carbon Dots for Living Cell Applications. ACS Appl. Nano Mater. 2022, 5, 17315– 17324, DOI: 10.1021/acsanm.2c04531
72. Sarkar, P.; Saha, M.; Nandi, N.; Sahu, D. K.; Sahu, K. Red-Emitting Silver Nanoclusters for Dual-Mode Detection of Cu2+ and Vitamin B12 in Living Cells. ACS Applied Nano Materials 2022, ASAP, DOI: 10.1021/acsanm.1c04496.
71. Pal, T.; Sahu, K. Comparison of interaction patterns of a triblock copolymer micelle with zwitterionic vs. cationic surfactant: An excited-state proton transfer dynamics investigation. Colloids Surf. A 2022, 640, 128327.
69. Nandi, N.; Gaurav, S.; Sarkar, P.; Kumar, S.; Sahu, K. Hit Multiple Targets with One Arrow: Pb2+ and ClO– Detection by Edge Functionalized Graphene Quantum Dots and Their Applications in Living Cells. ACS Applied Bio Materials 2021, 4, 7605-7614.
70. Pal, T.; Sahu, K. Photophysical characterization of a sub-micellar triblock copolymer-cationic surfactant aggregate for nanostructure synthesis. Journal of Photochemistry and Photobiology 2021, 8, 100066.
68. Nandi, N.; Sarkar, P.; Sahu, K. N-Doped Carbon Dots for Visual Recognition of 4-Nitroaniline and Use in Fluorescent Inks. ACS Applied Nano Materials 2021, 4, 9616-9624.
67. Nandi, N.; Gaurav, S.; Sarkar, P.; Kumar, S.; Sahu, K. Multifunctional N-Doped Carbon Dots for Bimodal Detection of Bilirubin and Vitamin B12, Living Cell Imaging, and Fluorescent Ink. ACS Applied Bio Materials 2021, 4, 5201-5211.
66. Hossen, T.; Sahu, K. Contrasting pKa shift and fluorescence modulation of 6-cyano-2-naphthol within α- and β-cyclodextrin J. Photochem. Photobiol. A 2021, 412, 113254.
65.Sahu,D.K.; Sarkar,P.; Singha,D.;Sahu,K. Protein-activated transformation of silver nanoparticles into blue and red-emitting nanoclusters: RSC Adv., 2019, 9, 39405.
64.Hossen, T.; Sahu, K.Effect of Photoacid Strength on Fluorescence Modulation of 2‑Naphthol Derivatives inside β‑Cyclodextrin Cavity: Insights from Fluorescence, Isothermal Calorimetry, and Molecular Dynamics Simulations
J. Phys. Chem. B 2019,123, 44, 9291-9301.
63.Pal, T.; Sahu, K. Anomalous Variation of Excited State Proton Transfer Dynamics Inside a Triblock Copolymer-Cationic Surfactant Mixed Micelle.J. Phys. Chem. B 2019,123, 40, 8559-8568
62. ​Hossen, T.; Sahu, K.Photo-induced Electron Transfer or Proton-Coupled Electron Transfer in Methylbipyridine/Phenol Complexes: A Time-Dependent Density Functional Theory Investigation.J. Phys. Chem. A 2019,123, 38, 8122-8129
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61. Mukhopadhyay, A.; Jana, K.; Hossen, T.; Sahu, K.; Moorthy, J. N. Coumarin-Annelated Regioisomeric Heptahelicenes: Influence of Helicity on Excited-State Properties and Chiroptical Properties. J. Org. Chem. 2019, 84, 10658-10668.
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60. Biswas, P.; Sahu, D. K.; Sahu, K.; Banerjee, R. Spectroscopic Studies of Asparaginyl-tRNA Synthetase from Entamoeba histolytica. Protein Peptide Lett. 2019, 26, 435-448.
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59. Singha, D.; Sahu, D. K.; Sahu, K. Probing the interfacial transition of acetonitrile/AOT/n-heptane microemulsion through in situ silver colloid synthesis. Colloids Surf. A 2019, 574, 171-177.
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58. Nandi, N.; Sahu, K. Analysis of excited state proton transfer dynamics of HPTS in methanol-water mixtures from time-resolved area-normalised emission spectrum (TRANES). J. Photochem. Photobiol. A 2019, 374, 138-144.
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57. Sahu, D. K.; Singha, D.; Sahu, K. Sensing of iron(III)-biomolecules by surfactant-free fluorescent copper nanoclusters. Sensing and Bio-Sensing Research 2019, 22, 100250.
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56.Sahu, K.; Nandi, N.; Dolai, S.; Bera, A. A Ratio-Analysis Method for the Dynamics of Excited State Proton Transfer: Pyranine in Water and Micelles. J. Phys. Chem. B 2018, 122, 6610-6615.
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55. Singha, D.; Sahu, D. K.; Sahu, K. Anomalous Spectral Modulation of 4-Aminophthalimide inside Acetonitrile/AOT/n-Heptane Microemulsion: New Insights on Reverse Micelle to Bicontinuous Microemulsion Transition. J. Phys. Chem. B 2018, 122, 6966-6974.
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54. Sahu, D. K.; Pal, T.; Sahu, K. A New Phase Transfer Strategy to Convert Protein-Capped Nanomaterials into Uniform Fluorescent Nanoclusters in Reverse Micellar Phase. ChemPhysChem 2018, 19, 2153-2158.
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53. Phukon, A.; Nandi, N.; Sahu, K. Pre-Micellar Interaction or Direct Monomer to Micelle Transition for Zwitterionic Sulfobetaine Surfactant in Water? A Comparative Fluorescence Study with Cationic Surfactant. J. Photochem. Photobiol. A 2018, 357, 140-148.
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52. Hossen, T.; Sahu, K. New Insights on Hydrogen-Bond-Induced Fluorescence Quenching Mechanism of C102–Phenol Complex Via Proton Coupled Electron Transfer. J. Phys. Chem. A 2018, 122, 2394-2400.
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51. Phukon, A.; Sahu, K., How Do the Interfacial Properties of Zwitterionic Sulfobetaine Micelles Differ from Those of Cationic Alkyl Quaternary Ammonium Micelles? An Excited State Proton Transfer Study. Phys. Chem. Chem. Phys. 2017, 19, 31461-31468.
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50. Singha, D.; Sahu, D. K.; Sahu, K., Coupling of Molecular Transition with the Surface Plasmon Resonance of Silver Nanoparticles inside the Restricted Environment of Reverse Micelles. ACS Omega 2017, 2, 5494-5503.
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49. Mukhopadhyay, A.; Hossen, T.; Ghosh, I.; Koner, A. L.; Nau, W. M.; Sahu, K.; Moorthy, J. N., Helicity-Dependent Regiodifferentiation in the Excited-State Quenching and Chiroptical Properties of Inward/Outward Helical Coumarins. Chem. Eur. J. 2017, 23, 14797-14805.
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48. Sahu, D. K.; Sahu, K., Characterizing Optical Properties, Composition of Stabilizer-Free Copper Nanoclusters and Its Interaction with Bovine Serum Albumin. J. Photochem. Photobiol. A 2017, 347, 17-25.
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47. Hossen, T.; Sahu, K., Elucidating the H-Bonding Environment of Coumarin 102 in a Phenol–Cyclohexane Mixture by Molecular Dynamics Simulation: Implications for H-Bond-Guided Photoinduced Electron Transfer. J. Phys. Chem. A 2017, 121, 616-622.
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46. Phukon, A.; Ray, S.; Sahu, K., Effect of Cosurfactants on the Interfacial Hydration of CTAB Quaternary Reverse Micelle Probed Using Excited State Proton Transfer. Langmuir 2016, 32, 10659-10667.
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45. Phukon, A.; Ray, S.; Sahu, K., How Does Interfacial Hydration Alter during Rod to Sphere Transition in DDAB/Water/Cyclohexane Reverse Micelles? Insights from Excited State Proton Transfer and Fluorescence Anisotropy. Langmuir 2016, 32, 6656-6665.
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44. Phukon, A.; Barman, N.; Sahu, K., Wet Interface of Benzylhexadecyldimethylammonium Chloride Reverse Micelle Revealed by Excited State Proton Transfer of a Localized Probe. Langmuir 2015, 31, 12587-12596.
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43. Barman, N.; Hossen, T.; Mondal, K.; Sahu, K., Modulation of Ultrafast Photoinduced Electron Transfer in H-Bonding Environment: Pet from Aniline to Coumarin 153 in the Presence of an Inert Co-Solvent Cyclohexane. Phys. Chem. Chem. Phys. 2015, 17, 32556-32563.
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42. Phukon, A.; Sahu, K., The strikingly different miscibility of n-octanol in highly-confined and quasi-confined water, ChemComm 2015, 51, 14103-14106.
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41. Barman, N.; Sahu, K., Anomalous Modulation of Photoinduced Electron Transfer of Coumarin 102 in Aniline-Dimethylaniline Mixture: Dominant Role of Hydrogen Bonding. Phys. Chem. Chem. Phys. 2014, 16, 27096-27103.
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40. Barman, N.; Sahu, K., Reduced Fluorescence Quenching of Coumarin 102 at Higher Phenol Mole Fractions in Cyclohexane-Phenol and Anisole-Phenol Solvent Mixtures: Role of Competitive Hydrogen Bonding. RSC Advances 2014, 4, 58299-58306.
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39. Singha, D.; Barman, N.; Phukon, A.; Sahu, K., Selective Probing of Reverse Micelle Interfacial Layer Upon Silver Nanoparticle Formation Using Dynamic Stokes Shift Measurements. J. Phys. Chem. C 2014, 118, 10366-10374.
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38. Barman, N.; Singha, D.; Sahu, K., Faster Photoinduced Electron Transfer in a Diluted Mixture Than in a Neat Donor Solvent: Effect of Excited-State H-Bonding. Phys. Chem. Chem. Phys. 2014, 16, 6159-6166.
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37. Singha, D.; Barman, N.; Sahu, K. A Facile Synthesis of High Optical Quality Silver Nanoparticles by Ascorbic Acid Reduction in Reverse Micelles at Room Temperature. J. Colloid. Int. Sci. 2014, 413, 37-42.
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36. Barman, N.; Singha, D.; Sahu, K., Fluorescence Quenching of Hydrogen-bonded Coumarin 102-phenol Complex: Effect of Excited-State Hydrogen Bonding Strength. J. Phys. Chem. A 2013, 117, 3945-3953.
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FROM POST-DOCTORAL RESEARCH
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35. Wu, H.; Sahu, K.; Berg, M. A., Multiple Population-Period Transient Spectroscopy (MUPPETS) of Cdse/Zns Nanoparticles. II. Effects of High Fluence and Solvent Heating. J. Phys. Chem. B 2013, 117, 15272-15284.
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34. Sahu, K.; Wu, H.; Berg, M. A., Multiple Population-Period Transient Spectroscopy (MUPPETS) of Cdse/Zns Nanoparticles. I. Exciton and Biexciton Dynamics. J. Phys. Chem. B 2013, 117, 15257-15271.
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33. Sahu, K.; Wu, H.; Berg, M. A. Rate Dispersion in the Biexciton Decay of CdSe/ZnS Nanoparticles from Multiple Population-Period Transient Spectroscopy. J. Am. Chem. Soc. 2013, 135, 1002-1005.
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32. Kern, S. J.; Sahu, K.; Berg, M. A. Heterogeneity of the Electron-Trapping Kinetics in CdSe Nanoparticles. Nano Lett. 2011, 11, 3493-3498.
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31. Sahu, K.; Kern, S. J.; Berg, M. A. Heterogeneous Reaction Rates in an Ionic Liquid: Quantitative Results from Two-Dimensional Multiple Population-Period Transient Spectroscopy. J. Phys. Chem. A 2011, 115, 7984-7993.
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30. Sahu, K.; Eisenthal, K. B.; McNeill, V. F. Competitive Adsorption at the Air–Water Interface: A Second Harmonic Generation Study. J. Phys. Chem. C 2011, 115, 9701-9705.
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29. Sahu, K.; Berg, M. A. Thermal Gratings and Phase in High-Order, Transient-Grating Spectroscopy. J. Chem. Phys. 2011, 134, 144502-14.
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28. Sahu, K.; McNeill, V. F.; Eisenthal, K. B. Effect of Salt on the Adsorption Affinity of an Aromatic Carbonyl Molecule to the Air−Aqueous Interface: Insight for Aqueous Environmental Interfaces. J. Phys. Chem. C 2010, 114, 18258-18262.
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FROM DOCTORAL RESEARCH
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27. Adhikari, A.; Sahu, K.; Dey, S.; Ghosh, S.; Mandal, U.; Bhattacharyya, K. Femtosecond Solvation Dynamics in a Neat Ionic Liquid and Ionic Liquid Microemulsion: Excitation Wavelength Dependence. J. Phys. Chem. B 2007, 111, 12809-12816.
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26. Sahu, K.; Mondal, S. K.; Ghosh, S.; Bhattacharyya, K. Ultrafast Dynamics in Biological Systems and in Nano-Confined Environments. Bull. Chem. Soc. Jpn. 2007, 80, 1033-1043.
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25. Ghosh, S.; Mondal, S. K.; Sahu, K.; Bhattacharyya, K. Ultrafast Photoinduced Electron Transfer from Dimethylaniline to Coumarin Dyes in Sodium Dodecyl sulfate and Triton X-100 Micelles. J. Chem. Phys. 2007, 126, 204708-11.
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24. Mondal, S.; Ghosh, S.; Sahu, K.; Sen, P.; Bhattacharyya, K. Excited-State proton Transfer from Pyranine to Acetate in Methanol. J. Chem. Sci. 2007, 119, 71-76.
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23. Samaddar, S.; Mandal, A. K.; Mondal, S. K.; Sahu, K.; Bhattacharyya, K.; Roy, S. Solvation Dynamics of a Protein in the Pre Molten Globule State. J. Phys. Chem. B 2006, 110, 21210-21215.
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22. Ghosh, S.; Mondal, S. K.; Sahu, K.; Bhattacharyya, K. Ultrafast Electron Transfer in a Nanocavity. Dimethylaniline to Coumarin Dyes in Hydroxypropyl γ-Cyclodextrin. J. Phys. Chem. A 2006, 110, 13139-13144.
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21. Mondal, S. K.; Ghosh, S.; Sahu, K.; Mandal, U.; Bhattacharyya, K. Ultrafast fluorescence resonance energy transfer in a reverse micelle: Excitation wavelength dependence. J. Chem. Phys. 2006, 125, 224710-9.
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20. Mondal, S. K.; Sahu, K.; Ghosh, S.; Sen, P.; Bhattacharyya, K. Excited-State Proton Transfer from Pyranine to Acetate in γ-Cyclodextrin and Hydroxypropyl γ-Cyclodextrin. J. Phys. Chem. A 2006, 110, 13646-13652.
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19. Sahu, K.; Ghosh, S.; Mondal, S. K.; Ghosh, B. C.; Sen, P.; Roy, D.; Bhattacharyya, K. Ultrafast fluorescence resonance energy transfer in a micelle. J. Chem. Phys. 2006, 125, 044714-8.
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18. Ghosh, S.; Sahu, K.; Mondal, S. K.; Sen, P.; Bhattacharyya, K. A femtosecond study of photoinduced electron transfer from dimethylaniline to coumarin dyes in a cetyltrimethylammonium bromide micelle. J. Chem. Phys. 2006, 125, 054509-7.
17. Sen, P.; Ghosh, S.; Mondal, S. K.; Sahu, K.; Roy, D.; Bhattacharyya, K.; Tominaga, K. A Femtosecond Study of Excitation-Wavelength Dependence of Solvation Dynamics in a Vesicle. Chem. Asian J. 2006, 1, 188-194.
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16. Sen, P.; Ghosh, S.; Sahu, K.; Mondal, S. K.; Roy, D.; Bhattacharyya, K. A femtosecond study of excitation wavelength dependence of solvation dynamics in a PEO-PPO-PEO triblock copolymer micelle. J. Chem. Phys. 2006, 124, 204905-8.
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15. Sahu, K.; Mondal, S. K.; Ghosh, S.; Roy, D.; Bhattacharyya, K. Temperature Dependence of Solvation Dynamics and Anisotropy Decay in a Protein: ANS in Bovine Serum Albumin. J. Chem. Phys. 2006, 124, 124909-7.
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14. Mondal, S. K.; Roy, D.; Sahu, K.; Mukherjee, S.; Halder, A.; Bhattacharyya, K. Study of partially folded states of cytochrome C by solvation dynamics. J. Mol. Liq. 2006, 124, 128-135.
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13. Sahu, K.; Mondal, S. K.; Ghosh, S.; Roy, D.; Sen, P.; Bhattacharyya, K. Femtosecond Study of Partially Folded States of Cytochrome C by Solvation Dynamics. J. Phys. Chem. B 2005, 110, 1056-1062.
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12. Sen, P.; Roy, D.; Mondal, S. K.; Sahu, K.; Ghosh, S.; Bhattacharyya, K. Fluorescence Anisotropy Decay and Solvation Dynamics in a Nanocavity: Coumarin 153 in Methyl β-Cyclodextrins. J. Phys. Chem. A 2005, 109, 9716-9722.
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11. Roy, D.; Mondal, S. K.; Sahu, K.; Ghosh, S.; Sen, P.; Bhattacharyya, K. Temperature Dependence of Anisotropy Decay and Solvation Dynamics of Coumarin 153 in γ-Cyclodextrin Aggregates. J. Phys. Chem. A 2005, 109, 7359-7364.
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10. Mondal, S. K.; Sahu, K.; Sen, P.; Roy, D.; Ghosh, S.; Bhattacharyya, K. Excited State Proton Transfer of Pyranine in a γ-Cyclodextrin Cavity. Chem. Phys. Lett. 2005, 412, 228-234.
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9. Guha, S.; Sahu, K.; Roy, D.; Mondal, S. K.; Roy, S.; Bhattacharyya, K. Slow Solvation Dynamics at the Active Site of an Enzyme: Implications for Catalysis. Biochemistry 2005, 44, 8940-8947.
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8. Mondal, S. K.; Roy, D.; Sahu, K.; Sen, P.; Karmakar, R.; Bhattacharyya, K. Hydration dynamics of 4-aminophthalimide in a substituted β-cyclodextrin nanocavity. J. Photochem. Photobiol. A 2005, 173, 334-339.
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7. Sahu, K.; Mondal, S. K.; Roy, D.; Karmakar, R.; Bhattacharyya, K. Study of interaction of a cationic protein with a cationic surfactant using solvation dynamics: Lysozyme: CTAB. Chem. Phys. Lett. 2005, 413, 484-489.
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6. Sahu, K.; Roy, D.; Mondal, S. K.; Karmakar, R.; Bhattacharyya, K. Study of protein–surfactant interaction using excited state proton transfer. Chem. Phys. Lett. 2005, 404, 341-345.
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5. Sahu, K.; Mondal, S. K.; Roy, D.; Karmakar, R.; Bhattacharyya, K. Slow solvation dynamics of 4-AP and DCM in binary mixtures. J. Photochem. Photobiol. A 2005, 172, 180-184.
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4. Roy, D.; Karmakar, R.; Mondal, S. K.; Sahu, K.; Bhattacharyya, K. Excited State Proton Transfer from Pyranine to Acetate in a CTAB Micelle. Chem. Phys. Lett. 2004, 399, 147-151.
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3. Sen, P.; Roy, D.; Sahu, K.; Kumar Mondal, S.; Bhattacharyya, K. Hydration dynamics of a protein in the presence of urea and sodium dodecyl sulfate. Chem. Phys. Lett. 2004, 395, 58-63.
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2. Sahu, K.; Roy, D.; Mondal, S. K.; Halder, A.; Bhattacharyya, K. Study of Solvation Dynamics in an Ormosil: CTAB in a Sol−Gel Matrix. J. Phys. Chem. B 2004, 108, 11971-11975.
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1. Mukherjee, S.; Sahu, K.; Roy, D.; Mondal, S. K.; Bhattacharyya, K. Solvation Dynamics of 4-Aminophthalimide in Dioxane–Water Mixture. Chem. Phys. Lett. 2004, 384, 128-133.
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