Our Research:

• LIF spectroscopy and excited state dynamics of cold molecules and clusters in a supersonic jet expansion
• Laser-induced Proton/ H-atom transfer reactions in cold molecular clusters and probing by photo-ionization time-of-flight mass spectrometry
• Ion mobility mass spectrometry for structure and photochemistry of important biomolecules and molecular complexes in liquids and gas phase
• Atmospheric photochemistry and atmospheric simulation for anthropogenic and biogenic VOCs
• Matrix isolation infrared spectroscopy of molecular complexes under the cryogenic conditions (below 10 K)

Recent Publications:

1. “Probing the endo/exo isomeric variants of a binary complex of cyclopropylamine with p-fluorophenol by LIF spectroscopy: A comparative study with ammonia complex", S. Biswas, S. Mondal, P. Biswas and T. Chakraborty, J. Phys. Chem. A (2020) In-press   

2. “Isomers and Rotamers of DCM in methanol and in gas phase probed by ion mobility mass spectrometry in combination with high performance liquid chromatography”, P. Chatterjee, S. Sankar Dutta and T. Chakraborty, J. Phys. Chem. B (2020), doi.org/10.1021/acs.jpcb.0c00097 

3. “Hydrogen Bonding Effects on Vibrational Dynamics and Photochemistry in Selected Binary Molecular Complexes”, P. Chatterjee, S. Biswas and T. Chakraborty, J Indian Inst Sci, 100, 155-165 (2020).

4. “Identification of an Emitting Metastable State of p-Fluorophenol-Ammonia 1:2 Complex by Laser-Induced Fluorescence Spectroscopy”, S. Biswas, I. Bhattacharya, and T. Chakraborty, J. Phys. Chem. A, 123, 10563-10570 (2019).

5. “Modulations of ν_O–H and ν_C-O Stretching Frequencies of Difluoroacetic Acid with Internal Rotation of CHF₂ Rotor: A Combined Vapor Phase and Matrix Isolation Infrared Spectroscopy Study”, I Bhattacharya, P Banerjee, J Sadhukhan, T Chakraborty, J. Phys. Chem. A, 123, 2771–2779 (2019) 

6. “Barrierless Proton Transfer in the Weak C–H···O Hydrogen Bonded Methacrolein Dimer upon Nonresonant Multiphoton Ionization in the Gas Phase”, P. Chatterjee, A. K. Ghosh, M. Samanta, T. Chakraborty, J. Phys. Chem. A, 122, 5563–5573 (2018)

7. “Weak hydrogen bonds: insights from vibrational spectroscopic studies, P. Banerjee and T. Chakraborty, Int. Rev. Phys. Chem.  37, 83–123 (2018) doi:org/10.1080/0144235X.2018.1419731.  

8. “Conformational preference determined by CH-p interactions of an OH...O hydrogen bonded binary complex of p-fluorophenol with 2,5-dihydrofuran: A laser-induced fluorescence spectroscopy study”, D. P. Mukhopadhyay, S. Biswas, A. Chattopadhyay and T. Chakraborty, J. Phys. Chem. A 112, 3787 (2018).

9. “Barrierless proton transfer in the weak CH-O hydrogen bonded methacrolein dimer upon non-resonant multi-photon ionization in the gas phase”, P. Chatterjee, A. K. Ghosh, M. Samanta and T Chakraborty, J. Phys. Chem. A 122, 5563 (2018).

10. “Mid-infrared quantum cascade laser spectroscopy probing of the kinetics of an atmospherically significant radical reaction, CH₃O₂ +NO₂ +M → CH₃O₂NO₂ + M, in the gas phase” A. Chattopadhyay, M. Samanta, K. Mondal and T. Chakraborty, J. Chem. Sci. 130, 54 (2018).