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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 νO–H and νC-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).

 
 

 

TC Group Apparatus: LIF Spectroscopy, Atmospheric Photochemistry & Mass Spectrometry of Complex Systems


Academic Profile

Education:

  • Ph.D., Laser Spectroscopy, 1992, IACS
  • M.Sc. (Special in Physical Chemistry), 1987, Calcutta University
  • B.Sc.  (Honours in Chemistry), 1985, Calcutta University

Position Held:

  • Postdoctoral Research Associate, University of Akron, USA, 1992-1994
  • Assistant, Associate and Professor at IIT Kanpur: 1994-2005
  • Senior Professor at IACS: 2005-present
  • INSA Visiting scientist, Technical University of Munich, Germany, 1997
  • Visiting Professor, University of Aarhus, Denmark, 2005


Group


Tapas Chakraborty


Senior Professor
Ph.D., Laser Spectroscopy, 1992, IACS
M.Sc. (Special in Physical Chemistry), 1987, Calcutta University
Laser Spectroscopy
pctc@iacs.res.in
Piyali Chatterjee


Research Associate
Ph. D: IACS, Kolkata, 2019 (Jadavpur University)
M. Sc: Jadavpur University, 2012
Photoionization induced fragmentation of hydrogen bonded phenolic clusters, Ion mobility mass spectrometry based structural characterization of naturally occurring biomolecules.
piyali.chatterjee19@gmail.com
Megha Agarwal


Junior Research Fellow
M Sc. National Institute of Technology Rourkela, 2019
Spectroscopic Investigation of Biomolecules using Liquid Chromatography Ion Mobility Mass Spectrometry
csma2313@iacs.res.in
Rinjini Saha


Junior Research Fellow
M.Sc.: Jadavpur University, 2020
Gas phase photochemistry of atmospherically important organic molecules using MID-IR spectroscopy
scsrs2534@iacs.res.in
Supriyo Dey


Junior Research Fellow
M.Sc. University of Calcutta, 2020
Photochemistry of sunscreen molecules and other biologically active phenolic derivatives probed by multi photon ionization time of flight mass spectrometry
scssd2535@iacs.res.in
Koushik Mondal


Senior Research Fellow
M.Sc.: Banaras Hindu University, 2015
Understanding atmospheric fate of trophospherically relevant VOC by means of photoxidation, hydroxyl radical and NO2 and to understand basic reaction mechanisms involved in the overall reaction pathway.
pckm@iacs.res.in
Subhra Sankar Dutta


Senior Research Fellow
M.Sc.: Scottish Church College, 2016
Investigating the photochemistry, structural characterization and conformational analysis of biologically important molecules using Ion-Mobility Mass Spectrometric technique.
pcssd@iacs.res.in
Subhasis Mandal


Senior Research Fellow
M.Sc.: Jadavpur University, 2017
Trace gas analysis by MID-IR spectroscopy. Kinetics of atmospherically important radicals.
cssm2058@iacs.res.in
Anwesha Datta


Senior Research Fellow
M.Sc.: Jadavpur University, 2019
Spectroscopic investigation of biomolecules and their structural characterization using ion mobility mass spectrometry.
csad2261@iacs.res.in

 


Publication

Publications
 

2022

Tautomers and Rotamers of Curcumin: A Combined UV Spectroscopy, High-Performance Liquid Chromatography, Ion Mobility Mass Spectrometry, and Electronic Structure Theory Study, Piyali Chatterjee, Subhra Sankar Dutta, and Tapas Chakraborty, J. Phys. Chem. A, 2022, 126, 10, 1591–1604

 

2021

Confinement effects on C–H and C–F stretching vibrational frequencies of difluoromethane in cold inert gas matrixes: a combined infrared spectroscopy and electronic structure theory study, Pujarini Banerjee and Tapas Chakraborty, Eur. Phys. J. D, 2021, 75, 131

Gas-Phase Oxidation of NO2 to HNO3 by Phenol: Atmospheric Implications, Koushik Mondal, Souvick Biswas, Aparajeo Chattopadhyay, Piyali Chatterjee, and Tapas Chakraborty, ACS Earth Space Chem., 2021, 5, 8, 2131–2141

 

2020

Probing the endo/exo isomeric variants of a binary complex of cyclopropylamine with p-fluorophenol by LIF spectroscopy: A comparative study with ammonia complex, Souvick Biswas, Subhasis Mandal, Pinakpani Biswas, and Tapas Chakraborty, J. Phys. Chem. A 2020, 124, 28, 5896–5906

Medium Dependent Crossover from the Red to Blue Shift of the Donor’s Stretching Fundamental in the Binary Hydrogen Bonded Complexes of CDCl3 with Ethers and Ketones, Indrani Bhattacharya, Jayshree Sadhukhan, Souvick Biswas and Tapas Chakraborty, J. Phys. Chem. A, 2020, 124, 36, 7259–7270

 

 

2019

Identification of an Emitting Metastable State of p-FluorophenolAmmonia 1:2 Complex by Laser-Induced Fluorescence Spectroscopy, Souvick Biswas, Indrani Bhattacharya, and Tapas Chakraborty, J. Phys. Chem. A 2019, 123, 10563-10570

Modulations of ?O-H and ?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, and T. Chakraborty, J. Phys. Chem. A 2019, 123, 2771-2779

 

2018

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, and T. Chakraborty, J. Phys. Chem. A 2018, 122, 5563−5573.

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., 2018, 130:54

Conformational Preference Determined by C−H···π Interaction of an O−H···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 2018, 122, 3787−3797

Weak hydrogen bonds: insights from vibrational spectroscopic studies, P. Banerjee & T. Chakraborty, International Reviews in Physical Chemistry 2018, 37, 83–123

 

2017

Antagonistic Interplay between an Intermolecular CH...O and an Intramolecular OH...O   Hydrogen Bond in a 1:1 Complex between 1,2-cyclohexanedione and Chloroform: A Combined Matrix Isolation Infrared and Quantum Chemistry Study, A. K. Samanta, P. Banerjee, B. Bandyopadhyay, P. Pandey and T. Chakraborty, J. Phys. Chem. A 2017, 121, 6012−6020.

Photoisomerization of a small cyclic ketone in the vapor phase, A. Chattopadhyay, K. Mondal, M. Samanta, T. Chakraborty, Chemical Physics Letters, 675, 104–110, 2017.

Photooxidation of cyclohexanone in simulated atmosphere: Apotential source of atmospheric formic acid, A. Chattopadhyay, K. Mondal, M. Samanta, T. Chakraborty, Atmospheric Environment 157 125-134, 2017.

Cooperative effect on phenolic νO–H frequencies in 1:1 hydrogen bonded complexes of o-fluorophenols with water: A matrix isolation infrared spectroscopic study, P.Banerjee, I. Bhattacharya and T. Chakraborty, Spectrochim. Acta Mol. Biomol. Spectrosc. 2017, 181, 116-121.

Hydrogen bond induced HF elimination from photoionized fluorophenol dimers in the gas phase, P. Chatterjee, A. K. Ghosh , and T. Chakraborty, J. Chem. Phys. 146, 084310, 2017.

Intermolecular vibrations and vibrational dynamics of a phenol…..methanol binary complex studied by LIF spectroscopy, D.P. Mukhopadhyay, S. Biswas, T. Chakraborty , Chemical Physics Letters,  674 71–76, 2017.

 

2016

LIF Spectroscopy of p‑Fluorophenol···Water Complex: Hydrogen Bond Vibrations, Fermi Resonance, and Vibrational Relaxation in the Excited State, D.P.Mukhopadhyay, S. Biswas, and T. Chakraborty, J. Phys. Chem. A, 120, 9159−9169, 2016.

Matrix isolation infrared spectra of O-H··· π Hydrogen bonded complexes of Acetic acid and Trifluoroacetic acid with Benzene, P. Banerjee, I. Bhattacharya and T. Chakraborty. J. Chem. Sci. 128, 1549–1555, 2016.

Matrix Isolation Infrared Spectroscopy of an O−H···π Hydrogen-Bonded Complex between Formic Acid and Benzene, P. Banerjee, I. Bhattacharya, and T. Chakraborty, J. Phys. Chem. A, 120, 3731−3739, 2016.

 

2015

On the origin of donor O–H bond weakening in phenol-water complexes, P. Banerjee, D.P. Mukhopadhyay, T. Chakraborty, J. Chem. Phys. 143, 204306, 2015

Gas-Phase Molecular Spectroscopy in the Past Five Decades: Bearings of the Advancements in Light Source Technologies, P. Banerjee, T. Chakraborty, Proc. Natl. Acad. Sci., India, Sect. A Phys. Sci. 85(4):501–505, 2015

Photo-oxidation of Acetone to Formic Acid in Synthetic Air and its Atmospheric Implication, A. Chattopadhyay, P. Chatterjee, and T. Chakraborty, J. Phys. Chem A. 119, 8146-8155, 2015

Electronic spectra and excited state dynamics of pentafluorophenol: Effects of low-lying ps* states, S. Karmakar, D. P. Mukhopadhyay and T. Chakraborty, J. Chem. Phys. 142 184303, 2015

 

2014

Correlation of νOH Spectral Shifts of Phenol−Benzene O−H···π Hydrogen-Bonded Complexes with Donor’s Acidity: A Combined Matrix Isolation, Infrared Spectroscopy, and Quantum Chemistry Study, P. Banerjee and T. Chakraborty, J. Phys. Chem. A, 118, 7074−7084, 2014

Keto-enol tautomerization and intermolecular proton transfer in photoionized cyclopentanone dimer in the gas phase, A. K. Ghosh, P. Chatterjee, and T. Chakraborty, J. Chem. Phys. 141, 044303, 2014

 

2013

Excited state tautomerization of 7-azaindole catalyzed by pyrazole, S. Karmakar, M. Mukherjee, T. Chakraborty, Chem. Phys. Lett., 561-562, 46–51, 2013

Signatures of Isomerization in Photodissociation of trans- Crotonaldehyde Probed by Multiphoton Ionization Mass Spectrometry, A. K. Ghosh, S. Datta, A. Mukhopadhyay, and T. Chakraborty, J. Phys. Chem A, 117, 8710−8717, 2013

Isomeric effects on fragmentations of crotonaldehyde and methacrolein in low-energy electron–molecule collisions, A. K. Ghosh, A. Chattopadhyay, A. Mukhopadhyay, T. Chakraborty, Chem. Phys. Lett., 561-562, 24–30, 2013

 

2012

CH•••O Interaction Lowers Hydrogen Transfer Barrier to Keto-Enol Tautomerization of β-Cyclohexanedione: Combined Infrared Spectroscopic and Electronic Structure Calculation Study, B. Bandyopadhyay, P. Pandey, P. Banerjee, A. K. Samanta, and T. Chakraborty, J. Phys. Chem A. 116, 3836–3845, 2012

Electron impact ionization and cross section of a-Cyclohexanedione, A. Mukhopadhyay, A. K. Ghosh, M. Mukherjee and T. Chakraborty, Int. J. Mass Spectrom. 309, 192–199, 2012

LIF spectroscopy of jet-cooled 1:1 complex between 7-azaindole and 2-pyrrolidinone, M. Mukherjee, S. Karmakar, and T. Chakraborty, Chem. Phys. Lett. 519-520, 34-39, 2012

Amine inversion effects on the IR spectra of aniline in the gas phase and cold inert gas matrixes, M. Mukherjee, B. Bandyopadhyay, P. Biswas and T. Chakraborty, Ind. J. Phys. 86, 201-208, 2012

Structure and Intermolecular Vibrations of 7-Azaindole...Water 2:1 Complex in a Supersonic Jet Expansion: Laser-Induced Fluorescence Spectroscopy and Quantum Chemistry Calculation, M. K. Hazra, M. Mukherjee, V. Ramanathan and T. Chakraborty, J. Chem. Sci. 124, 131-139 2012

 

2011

UV Photolysis of α-Cyclohxanedione in the gas phase, A. Mukhopadhyay, M. Mukherjee, A. K. Ghosh and T. Chakraborty, J. Phys. Chem A 115, 7494–7502, 2011

Probing secondary structures of end-capped tripeptide, BOC–Phe–Aib–Leu–OMe by combined study of infrared spectroscopy and quantum chemistry calculation, P. Pandey, A. Pramanik and T. Chakraborty, Chem. Phys. 389, 88-95, 2011

Intra- and intermolecular H-bond mediated tautomerization and dimerization of 3-methyl-1,2-cyclopentanedione: Infrared spectroscopy in argon matrix and CCl4 solution, A.K. Samanta, P. Pandey, B. Bandyopadhyay, A. Mukhopadhyay, T. Chakraborty, J. Mol. Struct. 994, 97 –103, 2011

Infrared spectroscopy of 2-pyrrolidinone and its hydrogen bonded dimers in a cold (8 K) inert gas matrix, P. Pandey, A. K. Samanta, B. Bandyopadhyay and T. Chakraborty. Vib. Spectrosc. 55, 126-131, 2011

Structure and hydrogen bond vibrations of the jet-cooled 1:1 complex between 7-azaindole and formamide: A laser-induced fluorescence spectroscopy study, M. K. Hazra, M. Mukherjee, D. Goswami and T. Chakraborty, Chem. Phys. Lett. 503, 203-209, 2011

Inhibition of Light-Induced Tautomerization of 7-Azaindole by Phenol: Indications of Proton-Coupled Electron/Energy Transfer Quenching, M. Mukherjee, S. Karmakar, and T. Chakraborty, J. Phys. Chem. A. 115, 1830–1836, 2011

 

2010

Amide-I and amide-A bands of δ-valerolactam and its dimers: A combined matrix isolation–FTIR spectroscopy and quantum chemistry study, P. Pandey, A. K. Samanta, B. Bandyopadhyay and T. Chakraborty, J. Mol. Struct, 975, 343-348, 2010

Blue- and Red-Shifting CH···O Hydrogen Bonded Complexes between Haloforms and Ethers: Correlation of Donor n(C-H) Spectral Shifts with C-O-C Angular Strain of the Acceptors, A. Mukhopadhyay, P Pandey, and T Chakraborty. J Phys. Chem. A. 114, 5026- 5033, 2010

Keto–enol tautomers of 1,2-cyclohexanedione in solid, liquid, vapour and a cold inert gas matrix: Infrared spectroscopy and quantum chemistry calculation, A. K. Samanta, P. Pandey, B. Bandyopadhyay and T. Chakraborty, J. Mol. Struct. 963, 234-239, 2010

Cooperative strengthening of an intramolecular O–H---O hydrogen bond by a weak C–H---O counterpart: Matrix isolation infrared spectroscopy and quantum chemical studies on 3-methyl-1,2-cyclohexanedione, A. K. Samanta, P. Pandey, B. Bandyopadhyay and T. Chakraborty, J. Phys. Chem. A. 114, 1650-1656, 2010

C-H• • •O Hydrogen Bonded Complexes Between Chloroform and Small Cyclic ketones: Correlation of Spectral shifts and Complex Stability with Ring Size, A. Mukhopadhyay and T. Chakraborty. Recent Advences in Spectroscopy (Springer) ISBN: 978-3-642-10321-6, 2010

Infrared spectroscopic demonstration of cooperative and anti-cooperative effects in C-H--O hydrogen bonds, A. K. Samanta and T. Chakraborty, Recent Advances in Spectroscopy (Springer), ISBN: 978-3-642-10321-6, 2010

 

2009

Blue Shifting C–H···O Hydrogen-Bonded Complexes Between Chloroform and Small Cyclic Ketones: Ring-Size Effects on Stability and Spectral Shifts, A. Mukhopadhyay, M. Mukherjee, P. Pandey, A. Samanta, B. Bandyopadhyay and T. Chakraborty, J. Phys. Chem. A. 113, 3078-3087, 2009

Competition Between π and σ Hydrogen Bonds and Conformational Probing of 2-(o-fluoro)phenylethanol by Low and High-Resolution Electronic Spectroscopy, R. Karamonkov, S. Chervenkov, H. J. Neusser, V. Ramanathan and T. Chakraborty, J. Chem. Phys. 130, 034301, 2009

 

2008

Dispersed Fluorescence Spectroscopy of p-Fluorophenol, P. Biswas, P. Pandey and T. Chakraborty, Chem. Phys. Lett. 454, 163-170, 2008

Laser Induced Fluorescence Spectroscopy of Jet Cooled trans 1- Methoxynaphthalene: A Comparative Study with trans 1-Hydroxynapthalene, V. Ramanathan, P. Pandey and T. Chakraborty, Chem. Phys. Lett. 456, 19-26, 2008

Raman Optical Activity: A Novel Version of Chiroptical Spectroscopy, M. Mukherjee, A. Mukhopadhyay and T. Chakraborty, Indian J. Phys. 82, 987-1001, 2008

Impact of Methyl Rotor in the Excited State Level Mixing of doubly hydrogen bonded complexes of 2-pyridone, M. K. Hazra and T. Chakraborty, J. Phys. Chem. A. 112, 1100-1104, 2008

 

2007

Laser induced fluorescence spectroscopy of a mixed dimer between 2-pyridone and 7-azaindole, M. K. Hazra, A. K. Samanta and T. Chakraborty, J. Phys. Chem. A. 111, 7813-7818, 2007

Evidence for a C–H˙˙˙π Type Weak Interaction: 1:1 Complex of Styrene With Acetylene Studied by Mass Selective High-Resolution UV Spectroscopy and ab initio Calculations, S. Chervenkov, P. Q. Wang, J. E. Braun, H. J. Neusser and T. Chakraborty, Phys. Chem. Chem. Phys. 9, 837-845, 2007

Identification of two conformers of 5-indanol in a supersonic free jet, S. Banerjee, S. Chakraborty, P. P. Puri, D. Nath, T.Chakrabortry and M. Chowdhury, Chem. Phys. Lett. 442, 21-27, 2007

On the influence of conformational locking of sugar moieties on the absorption and circular dichroism of nucleosides from synchrotron radiation experiments, A. I. S. Holm, E. S. Worm, T. Chakraborty, B. R. Babu, J. Wenjel, S. B. Hoffmann and S. B. Nielsen, J. Photochem. Biol. A 187, 293-298, 2007

Synchrotron Radiation Circular Dichroism of DNA Single Strands and Hybrids, A. I. S. Holm, E. S. Worm, U. Kadhane, T. Chakraborty, S. V. Hoffmann and S. B. Nielsen, Asian Chem. Lett. 11, 225-230, 2007

 

2006

Hydrogen-bond vibrations in the S1↔S0 spectra of a nucleobase pair analog: A mixed dimer between 2-pyridone and formamide, M. K. Hazra, A. K. Samanta and T. Chakraborty. J. Chem. Phys. 125, 214302, 2006

Origin of threefold symmetric torsional potential of methyl group in 4-methyl styrene,R. K. Sinha, B. Pradhan, B. P. Singh, T. Kumdu, P. Biswas and T. Chakraborty, J. Chem. Phys. 124, 144316, 2006

Conformation and laser-induced fluorescence spectroscopy of phenetole in supersonic jet, V. Ramanathan, P. Pandey and T. Chakraborty, Chem. Phys. Lett. 427, 18, 2006

Specific and non-specific interactions in a molecule with flexible side chain: 2-phenylethanol and its 1:1 complex with argon studied by high-resolution UV spectroscopy, S. Chervenkov, R. Karaminkov, J. Braun, H. J. Neusser, S. S. Panja and T. Chakraborty, J. Chem. Phys. 124, 234302, 2006

2-Hydroxypyridine↔2-Pyridone Tautomerization: Catalytic Influence of Formic Acid, M. K. Hazra and T. Chakraborty, J. Phys. Chem. A 110, 9130-9136, 2006

On the Survival of Peptide Cations after Electron Capture: Role of Internal Hydrogen Bonding and Microsolvation, T. Chakraborty, A. I.S. Holm, P. Hvelplund, S. B. Nielsen, J. C. Poully, E. S. Worm, and E. R. Williams, J. Am. Soc. Mass Spectrom. 17, 1675-1680, 2006

Fluorescence spectroscopy of jet-cooled chiral (�)- indan-1-ol and its cluster with (�)- methyl- and ethyl- lactate,K. L. Barbu-Debus, F. Lahmani, A. Z. Rentien, N. Guchhait, S. S. Panja and T. Chakraborty, J. Chem. Phys. 125, 174305, 2006

Design and Synthesis of 1, 10-Phenanthroline Based Zn (II) Complexes Bearing 1D Push-Pull NLO-phores for Tunable Quadratic Nonlinear Optical Properties, S. Das, A. Jana, V. Ramanathan, T. Chakraborty, S. Ghosh, P. K. Das and P. K. Bharadwaj, J. Organomet. Chem. 691, 2512-2516, 2006

 

2005

Spectroscopy of Doubly Hydrogen-Bonded Molecular Dimers: DNA Base Pairs and Their Spectroscopic Analogues, Proc Indian Natn. Sci. Acad, 71A, 391-397, 2005

Synchrotron Radiation Circular Dichroism Spectroscopy of Ribose and Deoxyribose Sugars, Adenosine, AMP and dAMP Nucleotides, S. B. Nielsen, T. Chakraborty and S. V. Hoffmann, Chem.Phys. Chem. 6, 2619-2624, 2005

Vibrational coupling in carboxylic acid dimers, C. K. Nandi, M. K. Hazra and T. Chakraborty, J. Chem. Phys. 123, 124310, 2005

Identification of isomeric dimers of o-fluorobenzoic acid using laser induced fluorescence spectroscopy, C. K. Nandi, A. K. Samanta and T. Chakraborty, Chem. Phys. Lett. 416, 261-267, 2005

Formamide Tautomerization: Catalytic Role of Formic Acid, M. K. Hazra and T. Chakraborty, J. Phys. Chem. A. 109, 7621-7625, 2005

Origin of Methyl Torsional Barrier in 1-Methyl-2(1H)-Pyridone, B. Pradhan, B. P. Singh, C. K. Nandi, T. Chakraborty, and T. Kundu, J. Chem. Phys. 122, 204323, 2005

Impact of extended π-conjugation on methyl rotor-induced IVR in aromatic molecules, P. Biswas, S. K. Panja, S. Manogaron and T. Chakraborty, J. Phys. Chem. A. 109, 3225-3234, 2005

Conformations and laser-induced fluorescence spectroscopy of jet-cooled 2-(p-fluorophenyl)ethanol, S. S. Panja, P. Biswas and T. Chakraborty, Chem. Phys. Lett. 411, 128-132, 2005

High-resolution ultraviolet spectroscopy of p-fluorostyrene–water: Evidence for a σ-type hydrogen-bonded dimer, S. Chervenkov, P. Q. Wang, J. E. Braun, S. Georgiev, H. J. Neusser and T. Chakraborty, J. Chem. Phys. 122, 244312, 2005

Conformational effects and level mixing in a doubly hydrogen-bonded 1:1 dimer of acetic acid and 3-fluorobenzoic acid, C. K. Nandi and T. Chakraborty, J. Indian Inst. Sci. 85, 367-379, 2005

 

2004

Hydrogen bond mediated rotor-ring coupling in acetic acid–benzoic acid mixed dimer, C. K. Nandi, M. K. Hazra and T. Chakraborty, J. Chem. Phys. 121, 7562, 2004

Conformational effects on vibronic spectra and excited state dynamics of 3-fluorobnzoic acid dimer, C. K. Nandi, M. K. Hazra and T. Chakraborty, J. Chem. Phys. 121, 5261, 2004

Hydrogen bond-induced vibronic mode mixing in benzoic acid dimer: A laser-induced fluorescence study, C. K. Nandi and T. Chakraborty, J. Chem. Phys. 120, 8521-8527, 2004

Binding Energy and Intermolecular Vibrations of Neutral and Ionized pFluorotoluene·Ar Cluster by Mass Analyzed Threshold Ionization, S. Georgiev, T. Chakraborty and H. J. Neusser, J. Phys. Chem. A 108, 3304-3307, 2004

Mass Analyzed Threshold Ionization Spectroscopy of p-Fluorostyrene, S. Georgiev, H. J. Neusser and T. Chakraborty, J. Chem. Phys. 120, 8015, 2004

Electrostatics-guided ab initio studies on weakly bonded complexes of substituted naphthalenes, S. R. Gadre, M. M. Deshmukh and T. Chakraborty, Chem. Phys. Lett. 384, 350-356, 2004

 

2003

Conformationally induced vibronic transitions in S0←S1 spectra of n-propylbenzene, S. S. Panja and T. Chakraborty, J. Chem. Phys. 119, 9486-9490, 2003

Discrimination of Rotational Isomers of 2-Phenylethanol by Dispersed Fluorescence Spectroscopy in Supersonic Jet, S. S. Panja and T. Chakraborty, J. Phys. Chem. A 107, 10984-10987, 2003

Conformations of indan and 2-indanol: A combined study by UV laser spectroscopy and quantum chemistry calculation, A. Das, K. K. Mahato, S. S. Panja and T. Chakraborty, J. Chem. Phys. 119, 2523-2530, 2003

Structure and electronic spectroscopy of naphthalene-acenaphthene van der Waals dimer: Hole-burning, dispersed fluorescence, and quantum chemistry calculations, A. Das, C. K. Nandi and T. Chakraborty, J. Chem. Phys. 118, 9589-9595, 2003

Conformational Stability of Allylbenzene: A combined study by dispersed fluorescence spectroscopy and quantum chemistry calculation, S. S. Panja and T. Chakraborty, J. Chem. Phys. 118, 6200-6204, 2003

Photochemistry in Supersonic jet-cooled molecular clusters, T. Chakraborty ISRAPS Bulletin, 13, 28-32, 2003

 

2002

Rotational Isomers of 1-Methoxynaphthalene: A Combined Study by Ultraviolet Laser Spectroscopy in a Supersonic Jet and ab initio Theoretical Calculation, K. K. Mahato, A. Das, A. N. Panda, T. Chakraborty and N. Sathyamurthy, J. Phys. chem. A, 106, 12058-12063, 2002

Exciplex emission from the mixed dimer of naphthalene and 2-cyanonaphthalene in a supersonic jet, A. Das, K. K. Mahato, Chayan K. Nandi, T. Chakraborty, Sridhar R. Gadre and Nikhil A. Gokhale, Phys. Chem. Chem. Phys. 4, 2162-2168, 2002

Discrimination of two low-energy conformers of octahydroanthracene in supersonic jet, S. Banerjee, N. Guchhait, D. Nath, M. Chowdhury, P. S. Meenakshi, S. Wategaonkar, A. Das and T. Chakraborty, Chem. Phys. Lett. 366, 211-219, 2002

Excimer formation in the mixed dimers of aromatic hydrocarbons: A laser-induced fluorescence study in supersonic jet, A. Das, K. K. Mahato, T. Chakraborty, Indian Acad. Sci.(Chem. Sci.) 114, 768, 2002

 

2001

Observation of excimer emission from the mixed dimer of naphthalene and 2 methoxynaphthalene: A laser-induced fluorescence study, A. Das, K. K. Mahato and T. Chakraborty, J. Chem. Phys. 114, 6107-6111, 2001

Jet spectroscopy of van der Waals dimers of 1-methoxynaphthalene: A laser-induced fluorescence study, A. Das, K. K. Mahato and T. Chakraborty, J. Chem. Phys. 114, 8310-8315, 2001

Excimer formation in the mixed dimer of naphthalene and 1-methoxynaphthalene in supersonic jet,A. Das, K. K. Mahato and T. Chakraborty, Phys. Chem. Chem. Phys. 3, 1813-1818, 2001

Excimer formation in jet-cooled 2-methoxynaphthalene clusters, A. Das, K. K. Mahato and T. Chakraborty, Chem. Phys. Lett. 341, 115-121, 2001

 

1997

Rotor-vibrator couplings in partially deuteratedtoluenes, W. Siebrand, M. Zgierski, F Zerbetto, M. J. Wojcik, M. Boczar, T. Chakraborty, W. G. Kofron and E. C. Lim, J. Chem. Phys. 106, 6279-6287, 1997

 

1995

Conformation-dependent intramolecular excimer formation in jet-cooled 1,3-diphenylpropane, T. Chakraborty and  E. C. Lim, J. Phys. Chem. 99, 17505-17508, 1995

 

1994

Mode selective exciplex formation in photoexcited van der Waals complex of anthracene with 1,4-dimethoxybenzene, T. Chakraborty and E. C. Lim, Chem. Phys. Lett. 230, 137-143, 1994

Electronic spectra and excited state dynamics of van der Waals clusters of anthracene with aliphatic and aromatic ethers: Dependence of exciplex formation on donor ionization potential, T. Chakraborty, S. Sun and E. C. Lim, J. Am. Chem. Soc. 116, 10050-10056, 1994

Low-frequency vibrations in the S0 and S1 states of 1,2,3,4,-tetrahydronaphthalene (tetraline) from fluorescence in seeded-supersonic jet, N. Guchhait, T. Chakraborty, D. Majumder and M. Chowdhury, J. Phys. Chem. 98, 9227-9232, 1994

Laser-induced fluorescence excitation spectra of indoline: Low-frequency vibrations of pseudo four membered ring, N. Guchhait, T. Chakraborty, P. K. Bera, D. N. Nath and M. Chowdhury, J. Mol. Struct. 327, 161-171, 1994

 

1993

Dual fluorescence from photoexcited van der Waals dimer of dibenzofuran in a supersonic jet: Intermediate case of the coupling between the dimer excited state and the low-lying excimer state, T. Chakraborty and E. C. Lim, Chem. Phys. Lett. 207, 99-104, 1993

Study of molecular conformations by ultraviolet laser spectroscopy and quantum chemical calculations: Inversion potentials in the ground and excited singlet states of jet-cooled 1,4-dihydronaphthalene, T. Chakraborty, J. E. Del Bene and E. C. Lim, J. Chem. Phys. 89, 8-13, 1993

Conformational analysis of xanthene by laser-induced fluorescence in a supersonic jet: Inversion potential in the ground and excited singlet states, T. Chakraborty and E. C. Lim, J. Chem. Phys. 98, 836-840, 1993

Laser-induced fluorescence spectroscopy in supersonic jet, T. Chakraborty and M. Chowdhury, Curr. Sci. 65, 323-332, 1993

Inter-ring exchange interactions in the excited electronic states of bridged diaryl compounds: Exciton splitting in 9,10-dihydroanthracene and dibenzosuberane, M. Z. Zgierski, T. Chakraborty and E. C. Lim, J. Chem. Phys. 98, 9340-9345, 1993

Study of van der Waals clusters of anthracene by laser-induced fluorescence in supersonic jet: Evidence of two structurally different dimers, T. Chakraborty and E. C. Lim, J. Phys. Chem. 97, 11151-11153, 1993

 

1992

Study of butterfly inversions of perfluoronaphthalene by laser-induced fluorescence in supersonic jet, T. Chakraborty, D. N. Nath and M. Chowdhury, J. Chem. Phys. 96, 6456-6463, 1992

Fluorescence excitation spectra of 1, 8-disubstituted naphthalenes in supersonic jet, T. Chakraborty and M. Chowdhury, Chem. Phys. 159, 439-448, 1992

Study of butterfly motion of xanthene through jet-spectroscopy, N. Guchhait, R. Dutta, P. Dutta and T. Chakraborty, Ind. J. Phys. 66B, 214, 1992

Supersonic Jet Spectroscopy of Floppy Molecules, M. Chowdhury, T. Chakraborty and T. Kundu, Proc. Ind. Acad. Sci. Chem. Sci. 104, 629-633, 1992

 

1991

Fluorescence excitation spectra of 9,10-dihydrophenanthrene, T. Chakraborty and M. Chowdhury, Chem. Phys. Lett. 177, 223-228, 1991

One and two-photon spectra of some selected molecules: Comparative study, M. Chowdhury, T. Chakraborty, T. Kundu, L. Kundu, A. K. Banerjee, D. N. Nath and S. P. Bhattacharyya, Proc. Ind. Acad. Sci. Chem. Sci. 103, 265, 1991

 

1990

Effect of cyclodextrin on the intramolecular charge transfer of Aminocoumarin Laser Dyes, A. Nag, T. Chakraborty and K. Bhattacharyya, J. Phys. Chem. 94, 4203-4206, 1990

Effect of inclusion of cyclodextrin on the excited state proton transfer of Carbazole, N. Chattopadhyay, T. Chakraborty, A. Nag, and M. Chowdhury, J. Photochem. Photobiol. 52, 199-204, 1990

Fluorescence excitation spectra of jet-cooled dihydroanthracene, T. Chakraborty and M. Chowdhury, Chem. Phys. Lett. 171, 25-28, 1990

Some New Aspects of Lanthanide Optical Spectroscopy: Circular Dichroism and 2-Photon Absorption, M. Chowdhury, A. K. Banerjee, T. Kundu, L. Kundu and T. Chakraborty, Proc. Ind. Acad. Sci. 102, 255-268, 1990

 


Honors/Awards

  • Young Scientist Medal Award, Indian National Science Academy, 1993
  • DST Ramanna Fellowship Awards: 2007 and 2011
  • Fellow, Indian Chemical Society and J C Ghosh Memorial Lecture Award
  • Fellow of the Indian Academy of Sciences  (FASc)


Research Activities






Group 1






Past group member list

Monoj Samanta


Senior Research Fellow
M.Sc.: Burdwan University, 2014
• Kinetics of atmospherically important radicals.
msamanta91@gmail.com
Souvick Biswas


Senior Research Fellow
Ph.D.: IACS University, thesis submitted
M.Sc.: IIT Roorkee, 2014
• Laser induced fluorescence spectroscopy of weakly bound complexes of biologically relevant chromophores and atmospheric measurements of NOx-NOy class of molecules by optical methods.
Current Position: Post-doctoral fellow at University of Hawaii at Manoa pcsb3@iacs.res.in
Indrani Bhattacharya


Senior Research Fellow
M. Sc.: University of Calcutta, 2014
• Study of conformations and photochemistry of small organic molecules and weak hydrogen bonded molecular complexes probed by Infrared Spectroscopy in room temperature vapor phase as well as under matrix isolation condition.
pcib@iacs.res.in