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Prof. Subit Kumar Saha

Professor
Department of Chemistry

Fluorescence spectroscopy, Soft matter, Protein-surfactant and DNA-surfactant interactions, Protein unfolding and refolding, Nanotubes of cyclodextrins and interactions with surfactants, Gemini surfactants, Solvation dynamics
Birla Institute of Technology & Science, Pilani
Hyderabad Campus
Jawahar Nagar, Kapra Mandal
Dist.-Medchal-500 078
Telangana, India

Publications

Paper Published in National/International Journals

61. Compaction of calf thymus DNA by a potential one-head-two-tail surfactant: Properties of nanomaterials and biological testing for gene delivery, Shalini Dyagala, Milan Paul, Vinod Kumar Aswal, Swati Biswas*, Subit Kumar Saha*, ACS Applied Bio Materials (Accepted, 2023). DOI: https://doi.org/10.1021/acsabm.3c00470      IF: 4.7

calf thymus DNA by a potential one-head-two-tail surfactant

60. Role of Gemini Surfactants with Variable Spacers and SiO2Nanoparticles in ct-DNA Compaction and Applications towardIn Vitro/In Vivo Gene Delivery, Sayantan Halder, Milan Paul, Shalini Dyagala, Rishika Aggrawal, Vinod K. Aswal, Swati Biswas*, and Subit K. Saha*, ACS Applied Bio Materials, 6, 2795 (2023). DOI: https://doi.org/10.1021/acsabm.3c00256      IF: 4.7

calf thymus DNA by a potential one-head-two-tail surfactant

59. Role of Dual Nature of Ionic Liquid in Solvation Dynamics and Rotational Diffusion in Mixed Micelles: A Time-Resolved Fluorescence and Fluorescence Anisotropy Study, Rishika Aggrawal, Sayantan Halder, Shalini Dyagala, Subit Kumar Saha*, ChemistrySelect, 8, e202204360 (2023). DOI:    https://doi.org/10.1002/slct.202204360        IF: 2.307

calf thymus DNA by a potential one-head-two-tail surfactant

58. Refolding of Denatured Gold Nanoparticles-Conjugated Bovine Serum Albumin through Formation of Catanions between Gemini Surfactant and Sodium Dodecyl Sulphate, Rishika Aggrawal, Sayantan Halder, Shalini Dyagala and Subit K. Saha*, RSC Advances, 12, 16014 (2022). IF: 3.361

calf thymus DNA by a potential one-head-two-tail surfactant

57. Concentration-dependent β-cyclodextrin-promoted refolding of gold nanoparticles-conjugated bovine serum albumin complexed with gemini surfactants of different spacer group, Sayantan Halder, Rishika Aggrawal, Subit Kumar Saha*, Colloids and Surfaces A: Physicochemical and Engineering Aspects,644, 128862 (2022). IF: 4.539.

calf thymus DNA by a potential one-head-two-tail surfactant

56. Transformation of Aqueous Micellar Phase to the Bilayer of Gemini Surfactants on Gold Nanoparticles: A Steady-State and Time-Resolved Fluorescence and Fluorescence Anisotropy Study by Tuning the Precise Locations of Probes, Rishika Aggrawal, Sayantan Halder, Balaji Gopalan, Swati Biswas, Subit Kumar Saha*,J. Phys. Chem. C,126, 6280 (2022). DOI: https://doi.org/10.1021/acs.jpcc.1c09892    IF: 4.126

calf thymus DNA by a potential one-head-two-tail surfactant

55. Pyrrole-pyridine chelating motif on the β-carboline skeleton: Selective Zn2+sensing via inhibition of ESIPT, Adarash Kumar Shukla, Rituparna Hazra, Pravesh Sharma, Subit Kumar Saha, Durba Roy, Onkar Prakash Kulkarni, Anupam Bhattacharya*, Dyes and Pigments,202, 110238 (2022). IF: 4.889 

54. Binding Interactions of Cationic Gemini Surfactants with Gold Nanoparticles-Conjugated Bovine Serum Albumin: A FRET/NSET, Spectroscopic, and Docking study, Sayantan Halder, Rishika Aggrawal, Srabanti Jana, and Subit K. Saha*, J. Photochem. Photobiol. B: Biology,225, 112351  (2021). IF: 6.252.

calf thymus DNA by a potential one-head-two-tail surfactant

53. Binding interactions and FRET between bovine serum albumin and various phenothiazine-/anthracene-based dyes: a structure-property relationship, Shouvik Bhuin, Sayantan Halder, Subit Kumar Saha,* and Manab Chakravarty,* RSC Advances,11, 1679 (2021). IF = 3.361.

calf thymus DNA by a potential one-head-two-tail surfactant

52. Study of Refolding of a Denatured Protein and Microenvironment Probed through FRET to a Twisted Intramolecular Charge Transfer Fluorescent Biosensor Molecule, Sayantan Halder, Rishika Aggrawal, Vinod K. Aswal, Debes Ray, and Subit K. Saha*, Journal of Molecular Liquids, 322, 114532 (2021). IF: 6.165

calf thymus DNA by a potential one-head-two-tail surfactant

51. Role of Different States of Solubilized Water on Solvation Dynamics and Rotational Relaxation of Coumarin 490 in Reverse Micelles of Gemini Surfactants, Water/12-s-12.2Br-(s= 5, 6, 8)/n-Propanol/Cyclohexane, Rishika Aggrawal, Sunita Kumari, Subhashis Gangopadhyay, Subit Kumar Saha*, ACS Omega, 5, 6738 (2020). IF: 3.512.

calf thymus DNA by a potential one-head-two-tail surfactant

50. Refolding of protein unfolded by gemini surfactants using b-cyclodextrin and sodium dodecyl sulfate in aqueous medium: Study on role of spacer chain of surfactants, Sunita Kumari, Sayantan Halder, Rishika Aggrawal, Vinod Kumar Aswal, Ganapathisubramanian Sundar,* and Subit K. Saha*, Journal of Molecular Liquids, 300, 112238 (2020). IF: 6.165

calf thymus DNA by a potential one-head-two-tail surfactant

49. Effect of gemini surfactants on binding interactions of Coumarin 485 with calf thymus deoxyribonucleic acid in presence of nanotubes of β-cyclodextrin, Sunita Kumari, Sayantan Halder, Rishika Aggrawal, Ganapathisubramanian Sundar,* and Subit K. Saha*, Journal of Molecular Liquids, 294, 111615 (2019). IF: 6.165

calf thymus DNA by a potential one-head-two-tail surfactant

48. Binding Interactions of Gemini Surfactants with Nanotubes of β-Cyclodextrin and Controlled Release of Guest Molecules: Effect of Spacer Chain Length and Concentration of Surfactants, Sunita Kumari, Ganapathisubramanian Sundar,* and Subit K. Saha*, ChemistrySelect, 4, 4190 (2019).IF: 2.109.

calf thymus DNA by a potential one-head-two-tail surfactant

47. Fluorescence Resonance Energy Transfer, Small Angle Neutron Scattering, and Dynamic Light Scattering Study on Interactions of Gemini Surfactants having Different Spacer Groups with Protein at Various Regions of Binding Isotherms. Sayantan Halder, Sunita Kumari, Sugam Kumar, Vinod K. Aswal, and Subit K. Saha* ACS Omega, 3, 11192  (2018). IF: 3.512. 

calf thymus DNA by a potential one-head-two-tail surfactant

46. Effect of Urea on Solvation Dynamics and Rotational Relaxation of Coumarin 480 in Aqueous Micelles of Cationic Gemini Surfactants with Different Spacer Groups, Sunita Kumari, Sonu, Sayantan Halder, Rishika Aggrawal, Ganapathisubramanian Sundar*, Subit Kumar Saha*, ACS Omega, 3, 3079 (2018). IF: 3.512. 

calf thymus DNA by a potential one-head-two-tail surfactant

45. Effect of Hydrophobicity of Tails and Hydrophilicity of Spacer Group of Cationic Gemini Surfactants on Solvation Dynamics and Rotational Relaxation of Coumarin 480 in Aqueous Micelles, Sunita Kumari, Rishika Aggrawal, Sonu, Sayantan Halder, G. Sundar* and Subit K. Saha*, ACS Omega, 2, 5898 (2017). IF: 3.512. 

calf thymus DNA by a potential one-head-two-tail surfactant

44. Study on interactions of cationic gemini surfactants with folded and unfolded bovine serum albumin: Effect of spacer group of surfactants, Sonu, Sayantan Halder, Sunita Kumari, Rishika Aggrawal, Vinod K Aswal and Subit K Saha*, Journal of Molecular Liquids, 243, 369 (2017). IF: 6.165

43. Effect of organic and a Hofmeister series of inorganic counterions on the solvation dynamics and rotational relaxation in aqueous micelles of hexadecyltrimethylammonium surfactants. Sunita Kumari, Sonu, G. Sundar*, and Subit K. Saha*, Journal of Photochemistry and Photobiology A: Chemistry 345, 98 (2017). IF: 4.291. 

calf thymus DNA by a potential one-head-two-tail surfactant

42. Interaction of bovine serum albumin with cationic monomeric and dimeric surfactants: A comparative study. Srishti Sinha, Deepti Tikariha, Jyotsna Lakra, Toshikee Yadav, Sunita Kumari, Subit K. Saha, Kallol K. Ghosh*, Journal of Molecular Liquids, 218, 421 (2016). IF: 6.165 

41. Solvation dynamics and rotational relaxation of Coumarin 153 in mixed micelles of Triton X-100 and cationic gemini surfactants: Effect of composition and spacer chain length of gemini surfactants. Sonu, Sunita Kumari and Subit K Saha*, Phys. Chem. Chem. Phys. 18, 1551 (2016). IF = 3.676. 

calf thymus DNA by a potential one-head-two-tail surfactant

40. Effect of polymethylene spacer of cationic gemini surfactants on solvation dynamics and rotational relaxation of Coumarin 153 in aqueous micelles. Sonu, Sunita Kumari and Subit K Saha*, J. Phys. Chem. B., 119, 9751 (2015). IF = 2.991. 

calf thymus DNA by a potential one-head-two-tail surfactant

39. Effect of polar organic solvents on self-aggregation of some cationic monomeric and dimeric surfactants. Srishti Sinha, Deepti Tikariha, Jyotsna Lakra, Amit K. Tiwari, Subit K. Saha and Kallol K. Ghosh*, J. Surfactants and Detergents, 18, 629 (2015). IF = 1.902.  

38. Solubilization of polycyclic aromatic hydrocarbons in structurally different gemini and monomeric surfactants: A comparative studyToshikee Yadav, Deepti Tikariha, Jyotsna Lakra, Manmohan L. Satnami, Amit K. Tiwari, Subit K. Saha and Kallol K Ghosh*, J. Molecular Liquids, 204, 216 (2015). IF = 6.165. 

37. Study on Metal Nanoparticles Synthesis and Orientation of Gemini Surfactant Molecules Used as Stabilizer. Amit Kumar Tiwari, Subhashis Gangopadhyay, Chien-Hsiang Chang, Surojit Pande*, Subit Kumar Saha*, J. Colloid Interface Sci., 445, 76 (2015). IF = 8.128.

36. Surface properties of amphiphilic drugs in presence of cationic surfactants. Toshikee Yadav, Deepti Tikariha, Jyotsna Lakra, Amit K. Tiwari, Subit K. Saha and Kallol K Ghosh*, J. Surface Sci. Technol., 30, 93 (2014). 

35. Study on intramolecular charge transfer processes, solvation dynamics and rotational relaxation of Coumarin 490 in reverse micelles of cationic gemini surfactant. Sonu, Amit K Tiwari, and Subit K Saha*, RSC Advances, 4, 25210 (2014). IF = 3.361. 

34. Effect of Hydroxyl Group Substituted Spacer Group of Cationic Gemini Surfactants on Solvation Dynamics and Rotational Relaxation of Coumarin-480 in Aqueous Micelles. Amit Kumar Tiwari, Sonu Kumar, and Subit Kumar Saha*, J. Phys. Chem. B, 118, 3582 (2014). IF = 2.991.

33. Study on Binding Interactions of a Hemicyanine Dye with Nanotubes of β-cyclodextrin and Effect of a Hofmeister Series of Potassium Salts. M. Sowmiya, Amit K. Tiwari, Sonu, G. Eranna, Ashok K. Sharma, Subit K. Saha*, J. Phys. Chem. C, 118, 2735(2014). IF = 4.126.

32. Study on photophysical properties and prototropic equilibria of trans-2-[4-(N,N-dimethylaminostyryl)] pyridine, Sonu, Amit K Tiwari, Amrit Sarmah, Ram K Roy, Subit K Saha,* Dyes and Pigments, 102, 114 (2014). IF = 4.889.

31. Aggregation properties and thermodynamics of micellization of gemini surfactants with diethyl ether spacer in water and water-organic solvent mixed media. Amit K. Tiwari, Sonu and Subit K. Saha*, J. Chemical Thermodynamics, 70, 24 (2014). IF = 3.178. 

30. Interaction Between Cationic Gemini and Monomeric Surfactants: Micellar and Surface Properties, Deepti Tikariha, Birendra Kumar, Soumen Ghosh, Amit K. Tiwari, Subit K. Saha, Nadia Barbero, Pierluigi Quagliotto, and Kallol K. Ghosh, Journal of Nanofluids,  2, 1 (2013). IF: 1.79.

29. Study on mixed micelles of cationic gemini surfactants having hydroxyl group in the spacers with conventional cationic surfactants: Effects of spacer group and hydrocarbon tail length. Sonu, Amit K. Tiwari and Subit K. Saha*, Industrial & Engineering Chemistry Research, 52, 5895 (2013). IF = 3.720. 

28. Aggregation behavior and thermodynamics of mixed micellization of gemini surfactants with a room temperature ionic liquid in water and water-organic solvent mixed media. Amit K. Tiwari, Sonu and Subit K. Saha* , J. Chemical Thermodynamics, 60, 29 (2013). IF = 3.178. 

27. A cationic surfactant-concentration dependent binding of a guest molecule with the nanotubes of ß-cyclodextrin and its release from the nanotubular cavities. S. Muthusubramanian, Amit K. Tiwari, Sonu and Subit K. Saha*, Soft Matter, 8, 11072 (2012). IF = 3.679. 

26. Exploration of twisted intramolecular charge transfer fluorescence properties of trans-2-
[4-(dimethylamino)styryl]benzothiazole to characterize the protein-surfactant aggregates. M. Sowmiya and Subit K. Saha*, J. Luminescence132, 2166 (2012). IF = 3.599.

25. Micellization behavior of gemini surfactants with hydroxyl substituted spacers in water and water-organic solvent mixed media: The spacer effect
Amit K. Tiwari, Sonu, M. Sowmiya and Subit K. Saha*, J. Molecular Liquids 167, 18 (2012). IF = 6.165.

24. Study on premicellar and micellar aggregates of gemini surfactants with hydroxyl substituted spacers in aqueous solution using a probe showing TICT fluorescence properties. Amit K. Tiwari, Sonu, M. Sowmiya and Subit K. Saha*, J. Photochem. Photobiol. A: Chem., 223, 6 (2011). IF = 4.291.

23. Study on intramolecular charge transfer fluorescence properties of trans-4-[4 -(N,N -dimethylamino)styryl]pyridine: Effect of solvent and pH M. Sowmiya, A. K. Tiwari, Sonu, and S. K. Saha*, J. Photochem. Photobiol. A: Chem., 218, 76 (2011). IF = 4.291. 

22. Fluorescent probe studies of micropolarity, premicellar and micellar aggregation of
non-ionic Brij surfactants. M. Sowmiya, A. K. Tiwari, and S. K. Saha*, J. Colloid Interface Sci., 344, 97 (2010). IF = 8.128. 

21. Fragmentation of molecule-induced g-cyclodextrin nanotubular suprastructures Due to
Drug Dosage. S. Jaffer, S. K. Saha and P. Purkayastha, J. Colloid Interface Sci., 337, 294 (2009).  IF = 8.128. 

20. Characterization of guest molecule concentration dependent nanotubes of b-cyclodextrin and their secondary assembly: Study with trans-2-[4(di-methyl amino)styryl]benzothiazole, a TICT-fluorescence probe, M. Sowmiya, P. Purkayastha, A. K. Tiwari, S. S. Jafer and S. K. Saha*, J. Photochem. Photobiol. A: Chem., 205, 186 (2009). IF = 4.291.

19. Intramolecular Charge Transfer Probe Induced Formation of a-cyclodextrin Nanotubular Suprastructures: A Concentration Dependent Process, S. Jaffer, S. K. Saha, G. Eranna,  A. K. Sharma, P. Purkayastha, J. Phys. Chem. C. 112, 11199 (2008). IF = 4.126.

18. Excited state isomerization and effect of viscosity- and temperature-dependent torsional relaxation on TICT fluorescence of trans-2-[4-(dimethylamino)styryl]benzothiazole, S. K. Saha*, P. Purkayastha*, A. B. Das, S. Dhara,  J. Photochem. Photobiol. A: Chem. 199, 179 (2008). IF = 4.291.

17. Defining the different phases of premicellar aggregation using the photophysical changes of a surface probing compound. S. Jaffer, M. Sowmiya, S. K. Saha*, P. Purkayastha*, J. Colloid Interface Sci.,325, 236 (2008). IF = 8.128.

16. A preliminary study of smelling agents using electrical potential oscillations at liquid-liquid interface. U. Roy, R. Shalini, S. V. Vanitha, S. K. Saha, and R. C. Srivastava,  Indian J. Biotechnol, 7, 73 (2008). IF = 0.414.

15. Photophysical characterization and effect of pH on the twisted intramolecular charge transfer fluorescence of trans-2-[4-(dimethylamino)styryl]benzothiazole. S. K. Saha*, P. Purkayastha*, and A. B. Das,  J. Photochem. Photobiol. A: Chem., 195, 368 (2008). IF = 4.291.

14. Complexations of 2-aminofluorene and 2-N, N'-dimethylaminofluorene to b-cyclodextrin in presence of sodium perchlorate in aqueous solution. S. K. Saha* and Kanchanmala A. K.; J. Surface Sci. Technol., 22, 35 (2006).

13. Development of some improvised biosensors : A review. S. K. Saha and R. C. Srivastava ; J. Surface Sci. Technol., 22, 55 (2006).

12. Interface mediated oscillators – A review. R. C. Srivastava & S. K. Saha; The ICFAI Journal of Science & Technology 1, 27 (2005).

11. Single capillary Teorell oscillator- studies with nonelectrolytes. K. Bala, K. Kumar, S. K. Saha and R. C. Srivastava; J. Colloid Interface Sci., 273, 320 (2004). IF = 8.128.

10. Quantifying taste using a hydrodynamic oscillator. U. Roy, S. K. Saha, C. R. Krishna Priya, V. Jayashree and R. C. Srivastava. Instrumentation Science & Technology, 31, 425 (2003).

09. A simple method for estimation of insulin based on changes in membrane permeability. S. K. Saha, P. Gayathri, U. Roy and R. C. Srivastava; Indian J. Biotechnol., 2, 236 (2003). IF=0.414

08. Fluorescence quenching of 2-aminofluorene by cetylpyridinium chloride, iodide ion and acrylamide in non-ionic micelles: Tweens. S. K. Saha, G. Krishnamoorthy and S. K. Dogra; J. Photochem. Photobiol. A: Chem., 121, 191 (1999). IF=4.291

07. Prototropic equilibrium of 2-aminofluorene in non-ionic micelles: Tweens. S. K. Saha, S. M. Santra and S. K. Dogra; J. Molecular Structure, 478, 199 (1999). IF = 3.196.

06. Photoluminescence of 2-aminofluorene: A Relook, S.K. Saha and S. K. Dogra., J. Molecular Structure, 470, 301 (1998). IF = 3.196.

05. Fluorescence quenching of aromatic amines by chloromethanes. S. K. Saha and S. K. Dogra; J. Luminescence, 75, 117 (1997). IF = 3.599.

04. Solvatochromic effects in the absorption and fluorescence spectra of indazole and its amino derivatives S. K. Saha and S. K. Dogra; J. Photochem. Photobiol. A: Chem., 110, 257(1997). IF = 4.291.

03. Protonation reactions of a few benzimidazoles in non-ionic micelles: Tweens. S. K. Saha and S. K. Dogra; Indian J. Chem, 35A, 734 (1996). IF = 0.491.

02. Prototropic reactions of 6-aminoindazole in cationic and anionic micelles. SK. Saha, S. Pandey and S. K. Dogra; Indian J. Chem., 34A, 771 (1995). IF = 0.491.

01. Prototropic equilibrium of some benzimidazoles in anionic and non-ionic micelles. S. K. Saha, P. K.Tiwari and S. K Dogra; J. Phys. Chem., 98, 5953 (1994).

Book publications

01. Thermodynamics A Core Course, 1st. edition, Published by Prentice Hall of India Pvt. Ltd., New Delhi in the year 2002. R. C. Srivastava, Subit K Saha and Abhay K Jain

02. Thermodynamics A Core Course, 2nd edition, Published by Prentice Hall of India Pvt. Ltd., New Delhi in the year 2004. R. C. Srivastava, Subit K Saha and Abhay K Jain

03. Thermodynamics A Core Course, 3rd edition, Published by Prentice Hall of India Pvt. Ltd., New Delhi in the year 2007. R. C. Srivastava, Subit K Saha and Abhay K Jain