Prof. Nilmoni Sarkar

Professor




Profile


Personal Website
nilmoni@chem.iitkgp.ac.in
3222255303
A-133, IIT Campus, Kharagpur - 721302, West Bengal


Research Statement


In our research group we have used picosecond time resolved fluorescence spectroscopy, fluorescence correlation spectroscopy (FCS), and fluorescence lifetime imaging microscopy (FLIM) to probe the structural dynamics of different self-assembled organized systems. Recently adsorption of fluorophores and protein in graphene oxide sheets are studied at a single molecular level via FCS and FLIM. Excited State Intramolecular and Intermolecular Proton Transfer (ESIPT) processes inside various biologically relevant supramolecular assemblies are also monitored. Ultrafast Fluorescence Resonance Energy Transfer (FRET) is also investigated to unravel the dynamics and micro-heterogeneity of confined systems. We also involved in synthesizing and characterizing unique class of Surface Active Ionic Liquids (SAILs) and their applications to the formation of ionic liquid in oil microemulsions and vesicles spontaneously. Recently we are setting up a femtosecond fluorescence up-conversion setup to unravel the dynamics in several microheterogeneous and nano-material systems which are not possible through picosecond fluorescence spectroscopy.


Projects



SYNTHESIS, CHARACTERIZATION AND APPLICATIONS OF SURFACE ACTIVE IONIC LIQUIDS (SAILS) FORMING SELF-ASSEMBLIES AND INVESTIGATION OF DYNAMICAL PROCESS IN
Client :   CSIR
Consultant :   Dr. NILMONI SARKAR
Co-Consultant(s) :   

FEMTOSECOND LASER FACILITY TO INVESTIGATE CONFINED MEDIA, BIOLOGICAL ASSEMBLIES. ROOM TEMPERATURE IONIC LIQUIDS AND NANO-MATERIALS
Client :   SERB (DST)
Consultant :   Dr. NILMONI SARKAR
Co-Consultant(s) :   Prof. Swagata Dasgupta and Prof. Prasanta Kumar Datta


Awards and Recognition


  1) Japan Society for Promotion of Science (JSPS)

Short-term Post-doctoral  fellowship from March 1996- May 1996.

  2) Japan Society for Promotion of Science (JSPS)

Post-doctoral fellowship from March 1998-June  1998

  3) Chemical Physics Letters most cited paper 2003-2007 award

For the paper  Chem. Phys. Lett. 381 (2003) 697-704.

  4) Reviewer of the Reputed Journals

Journal of American Chemical Society, J. Physical Chemistry, J. Physical Chemistry Letters, J. Chemical Physics, Langmuir, J. Photochemistry. Photobiol.A &B, J. Colloid and Surface Sci., J. Industrial Enginnering and Chemistry, Chemical Physics Letters, Angew Chem., J. Mol. Liq., J. Luminescence, Chem. Rev., ACS Nano., ACS Applied Materials and Interfaces, Talanta

  5) Nominated as Member, Editorial Advisory Board.

Editorial Advisory Board of the Journal of Physical Chemistry (2018-2020)

  6) Fellow of the National Academy of Sciences, India (NASI)

Fellow of the National Academy of Sciences, India (NASI), 2018

  7) Life Member of the Chemical Research Society of India and Indian Association for Cultivation of Science, Kolkata.

Life  Member of the Chemical Research Society of India and Indian Association for Cultivation  of Science, Kolkata.

  8) Dr. M. N. Ghosh memorial gold medal for securing 1st position in B. Sc. (Chemistry Hons.) examination, 1986


Courses Taught


No Course Added Yet!

Patents


No Patents Added Yet!

Research Area



1) The self assembly behaviour of 5-fluorouracil and N,N-dimethyl derivative, 5-fluoro-1,3-dimethyluracil under physiological conditions was explored. This self-assembly of 5-FU compared with its N,N-dimethyl derivative also showed lower cytotoxicity to K562 cells.
Download Research File
2) An anionic lipophilic dye, MC540 and cationic SAIL, C8mimCl employed to construct highly ordered fibrillar and vesicular aggregates. The synergistic interplay of electrostatic, hydrophobic, and pi-pi stacking interactions to construct the self-assembly and their concentration-dependent morphological transition was also explored.
Download Research File
3) The synthesis of BSA and HSA fibrils and the effect of three amphiphilic SAILs- C8mimCl, C12mimCl and C16mimCl was explored which showed that all these three SAILs have different extent of fibril inhibition effect.
Download Research File
4) A novel L-glycine amino acid derived cholesterol based SAIL has been explored for the preparation of IL-in-oil microemulsions and vesicles. These aggregates may potentially serve as good biomimicking models and possible drug carriers.
Download Research File
5) The location as well as the photo physical behaviours of hydrophobic C153 and hydrophilic R6G during micelle-vesicle-micelle transition of aqueous anionic surfactant, SDBS and imidazolium containing cationic surfactants was investigated.
Download Research File
6) Protein-capped silver NCs impregnated onto graphene oxide (GO) sheets was internalized into the K562 cell and the Ag NCs/GO assembly can act as a synergistic drug carrier for Imatinib along with this Ag NCs adsorbed on GO have a great potential to be used as X-ray computer tomography (CT) imaging contrasting agents.
Download Research File
7) The interaction of L-phenylalanine fibrils with two crown ethers- 15C5 and 18C6 was explored. Although, both the crown ethers have the ability to arrest fibril formation, but 18C6 was found to be a better candidate compared to 15C5.
Download Research File

Group Members


  AAKASH PATIDAR (M.Sc Project)
Topic: Photochemistry and Chemical Dynamics
Email: aakashpatidar39@iitkgp.ac.in

  ARGHAJIT PYNE (SRF)
Topic: Physical Chemistry and Chemical Dynamics
Email: arghajit.pyne@gmail.com

  MEGHNA GHOSH (JRF)
Topic: Chemical Dynamics in Organized Assemblies
Email: maymegg@gmail.com

  MEGHNA MAITI (M.Sc Project)
Topic: Photochemistry and Chemical Dynamics
Email: meghnamaiti49@gmail.com

  NANIGOPAL BERA (JRF)
Topic: Photochemistry and Dynamics
Email: nanigopalberachemistry@gmail.com

  PAVEL BANERJEE (SRF)
Topic: Chemical Dynamics and Single Molecule Spectroscopy
Email: pavel.chem8@iitkgp.ac.in

  PRATYUSHKIRAN NANDI (JRF)
Topic: Chemical Dynamics in Organized Assemblies
Email: pratyush.k.nandi@gmail.com

  SANGITA KUNDU (SRF)
Topic: Physical Chemistry and Chemical Dynamics
Email: sangitakundu13@gmail.com

  SIDDHARTHA PAL (PDF)
Topic: Graphene functionalized material
Email: siddharthapal7@gmail.com

  SOURAV NANDI (SRF)
Topic: Chemical Dynamics in Organized Assemblies
Email: souravnandi1992@gmail.com

  SOUVIK LAYEK (JRF)
Topic: Physical Chemistry and Chemical Dynamics
Email: souvik.layek@iitkgp.ac.in


Group Alumni


  Arpita Roy (PhD)
Topic: Morphological Alteration of Various Self-assemblies and Its Effect on Different Excited Sate Processes
Email: arpitaroychemistry@chem.iitkgp.ernet.in

  Avijit Patra (M.Sc Project)
Topic: Chemical Dynamics
Email: avipatra9196@gmail.com

  Chiranjib Ghatak (PhD)
Topic: Fluorescence Spectroscopic Investigation of Various Photophysical and Dynamical Phenomena inside Biologically Relevant Environment
Email: c.ghatak79@gmail.com

  Chiranjib Banerjee (PhD)
Topic: Photophysics and Dynamics of Different Fluorophores in Confined Media
Email: chiranjibbanerjee1@gmail.com

  Debabrata Seth (PhD)
Topic: Photochemistry and Chemical Dynamics
Email: debabrata@iitp.ac.in

  Debasis Banik (PhD)
Topic: Investigation of Different Photophysical and Dynamical Processes within Self-Organized Systems and Inhibition Strategies of Fibrillar Assemblies formed by Single Amino Acids
Email: banik.debasis@gmail.com

  Debdeep Chakrabarty (PhD)
Topic: Study of excited state intramolecular proton transfer, solvation dynamics in different organized assembly using steady state & time resolved fluorescence spectroscopic techniques.
Email: debdeepchem@gmail.com

  Dipankar Mondal (PDF)
Topic: Modulation of Membrane Fluidity using Femtosecond Fluorescence Upconversion study
Email: dmondal@iitkgp.ac.in

  Jagannath Kuchlyan (PhD)
Topic: Investigation of Various Photophysical and Dynamical Phenomena Using Different Spectroscopic and Microscopic Techniques
Email: jkuchlyan@gmail.com

  Niloy Kundu (PhD)
Topic: Fluorescence Spectroscopy to Unveil different Photophysical Phenomena inside Biologically Relevant Environment: From Ensemble Average to Single Molecule Measurements
Email: niloy.kgp@gmail.com

  Palash Setua (PhD)
Topic: Nonaqueous reverse micelles as templating media and investigation of solvent relaxation in organized assembly containing nanoparticle
Email: palashsetua@gmail.com

  Partha Hazra (PhD)
Topic: Investigation of photo-physical properties of organic molecules with the help of both steady state and time resolved fluorescence spectroscopic techniques
Email: p.hazra@iiserpune.ac.in

  Rajesh Kumar Saini (PDF)
Topic: Investigation of photoinduced electron transfer reaction in different homogeneous solvents
Email: rksaini@chem.iitkgp.ernet.in

  Rajib Pramanik (PhD)
Topic: Dynamics of solvent and rotational relaxation in room temperature ionic liquid containing mixed solvents and microheterogeneous systems
Email: rajib.chem@gmail.com

  RUPAM DUTTA (PhD)
Topic: Morphological Alteration of Different Self-Assembled Aggregates and Investigation of Various Dynamical Processes inside the Confined Assemblies
Email: duttarupam2011@gmail.com

  Sarthak Mondal (PhD)
Topic: xcited State Intramolecular Proton Transfer, Energy Transfer and Solvation Dynamics in Biologically Relevant Self-Assemblies, Room Temperature Ionic Liquid and Binary Solutions
Email: sarthakmandal@gmail.com

  SHREYA ROY (M.Sc Project)
Topic: Photochemistry and Chemical Dynamics
Email: roy.shreya1994@gmail.com

  Souravi Sarkar (PhD)
Topic: Photophysical and dynamical studies in solvent mixture, room temperature ionic liquids (RTILs) and RTIL containing confined media
Email: souravi.sarkar@gmail.com

  Surajit Ghosh (PhD)
Topic: Dynamics of Solvation, Photoisomerisation and Proton transfer in microheterogenous systems consisting of Surfactants,Polymers and RTILs
Email: sghosh4588@gmail.com

  Vishal Govind Rao (PhD)
Topic: Preparation and Characterization of Different Microheterogeneous Systems Containing Ionic Liquids: Investigations of Various Photophysical and Dynamical Phenomena
Email: vgriitkgp@gmail.com