Academic Background
M.Sc. Vidyasagar University (1991)
Ph.D. Indian Association for the Cultivation of Science (IACS) (1996)
Professional Experiences
- JSPS Postdoctoral Fellow: Kwansei Gakuin University, Japan (1997 - 1999)
- Postdoctoral Researcher: Katholieke University of Leuven, Belgium (1999 - 2000)
- Visiting Fellow: Department of Chemical Science, TIFR, Mumbai (2000 - 2001)
- Lecturer: Department of Chemistry, BITS, Pilani (2001 - 2003)
- JSPS Invitation Fellowship: Kwansei Gakuin University, Japan (2003), 3 months.
- Lecturer: Department of Chemistry, NEHU, Shillong (2003 - present)
- Visiting Professor C: Kwansei Gakuin University, Japan (2006), 2 months
Research Interests
- Spectroscopy and Excited State Dynamics of Proton Transfer, Charge Transfer & Photochromic Systems;
- Photophysical Characterization of Inclusion Complexes, Solvation Dynamics;
- Biomolecular Interaction & Photochemistry of Organic Biomolecules.
In general, several aspects on the above mentioned problems are monitored with steady state and time resolved fluorescence spectroscopy. Ultrafast phtoprocesses and solvent response towards the formation of the transient species are probed with transient absorption and fluorescence upconversion techniques in collaboration with several research groups in India & abroad. The experimental results are often supported with high level ab-initio calculations and density functional theory. Recently we have also initiated the study of assembling and aggregation of biomolecules by fluorescence correlation spectroscopy.
Research Activities
- Excited state properties and relaxation dynamics of intramolecularly hydrogen bonded azo derivatives" Dept. of Science & Technology (DST), Govt. of India (2005 - 2008) [completed].
- Spectroscopic characterization of intramolecular charge transfer type polarity sensors and their use in the study of protein - surfactant interaction" Council of Scientific & Industrial Research (CSIR), Govt. of India (2005 - 2008) [completed].
- Construction and Multi-site Commissioning of Multiple Fluorescence Correlation Spectrometers (a single molecule biophotonic tool)" [as co-investigator, with Prof. S. Maiti of TIFR, Mumbai as chief-investigator], Dept. of Information & Technology (DIT), Govt. of India (2008 - 2011) [ongoing].
- Spectroscopy and Dynamics of Photoinduced Processes in Homogeneous and Biomimetic Environments” University grants Commission (UGC), Govt. of India (2008 – 2011) [ongoing].
- Fluorescence Studies on Representative Intramolecular Photoprocesses in Homogeneous and Constrained Environments” Board of Research in Nuclear Sciences (BRNS), DAE, Govt. of India (2009 – 2012) [ongoing].
- Representative Publications [during 2006 ~ 2010]:
- “On the interaction of luminol with human serum albumin: Nature and thermodynamics of ligand binding” N. S. Moyon and Sivaprasad Mitra, Chem. Phys. Letts. 2010, 498, 178 – 183.
- "Competitive ESIPT in o-hydroxy carbonyl compounds: Perturbation through solvent modulation and internal torsion" Sivaprasad Mitra in Hydrogen bonding and transfer in the excited state (Eds. K. Han and G. Zhao), John Wiley & Sons, 2010 (chapter - 29).
- "Effect of Solvent Hydrogen Bonding on Excited State Properties of Luminol: A Combined Fluorescence and DFT Study" N. S. Moyon, Asit K. Chandra and Sivaprasad Mitra, J. Phys. Chem. A. 2010, 114, 60 - 67.
- “Fluorescence properties of trans-ethyl-p-(dimethylamino) cinnamate in presence of bile acid host” T. Sanjoy Singh and Sivaprasad Mitra, J. Photochem. Photobiol. B: Biology, 2009, 96, 193 - 200.
- “Fluorimetric Study on the Charge Transfer Behavior of trans-ethyl-(p -dimethylamino cinnamate) and its Derivative in Cyclodextrin Cavities” T. S. Singh and Sivaprasad Mitra, J. Incl. Phen. & Macro. Chem. 2009, 63, 335 - 345.
- “Fluorescence Studies on the Photophysical Properties and Encapsulation Behavior of Acetaminophen in Different Environments” N. S. Moyon, T. S. Singh and Sivaprasad Mitra, Biophys. Chem. 2008, 138, 55.
- “Fluorimetric studies on the binding of 4-(dimethylamino) cinnamic acid with micelles and bovine serum albumin” T. Sanjoy Singh and Sivaprasad Mitra, Photochem. Photobiol. Sci. 2008, 7, 1063.
- “A Combined Experimental and Theoretical Study on Photoinduced Intramolecular Charge Transfer in trans-ethyl p-(dimethylamino) cinamate” T. Sanjoy Singh, S. Mitra, A. K. Chandra, N. Tamai and S. Kar, J. Photochem. Photobiol. A: Chem. 2008, 197, 295.
- “Experimental and Computational Study on Photophysical Properties of Substituted o-hydroxy Acetophenone Derivatives: Intramolecular Proton Transfer and Solvent Effect” S. Mitra, T. Sanjoy Singh, A. Mandal and S. Mukherjee, Chem. Phys., 2007, 342, 309.
- “Fluorescence behavior of intramolecular charge transfer probe in anionic, cationic and non-ionic micelles” T. Sanjoy Singh and S. Mitra, J. Colloid & Interface Science, 2007, 311, 128.
- “Intramolecular proton transfer in 4-methyl-2,6-diformyl phenol and its derivative studied by femtosecond transient absorption spectroscopy” S. Mitra, N. Tamai and S. Mukherjee, J. Photochem. Photobiol. A: Chem. 2006, 178, 76
Ph.D Students :
Mr. N. Shaemningwar Moyon
Ms. Smritakshi Phukan
Mr. Pynsakhiat miki Gashnga
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Past member : Dr. T. Sanjoy Singh
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