Pradipta Purkayastha

Dept: Chemical Sciences (DCS)
E-mail: ppurkayastha [at]
Personal homepage: Click Here

Research Interest:

•Photophysical characterization of organic molecules using excited state proton transfer and charge transfer including twisted intramolecular charge transfer (TICT).•Photophysical and photochemical modulation of essential peptides in constrained biological environments using steady state and time-resolved fluorescence spectroscopy.•Application of metal nanoparticles and nanoclusters in drug delivery.•Single molecule spectroscopic study of protein polymerization using fluorescence correlation spectroscopy (FCS).

Academic Background:

  1. PhD (Photophysics and Photochemistry), Jadavpur University, 2002


  1. Professor, IISER Kolkata (current)
  2. Associate Professor, IISER Kolkata (2013 - 2018)
  3. Assistant Professor, IISER Kolkata (2009 - 2013)
  4. Assistant Professor, BITS, Pilani (2007 - 2009)
  5. Lecturer, BITS, Pilani (2004 - 2007)
  6. Postdoctoral Research Fellow, University of Pennsylvania (2002 - 2004)

Awards and Honors:

  1. Research Excellence Award from Institute of Scholars, Bangalore (2020)
  2. Fellow from West Bengal Academy of Science and Technology (WAST) (2019)
  3. Research Ratna Awards 2019 from Research Under Literal Access (RULA) Awards (2019)
  4. Outstanding Faculty in Chemistry from Venus International Foundation (2018)

Selected Publications:

  1. Mallick, Arabinda; Das, Tarasankar and Purkayastha, Pradipta. 2021."New bright sensor with logic sense to detect early onset of malignancy: A direct observation." Mater. Lett., 286, 129262
  2. Bhunia, Soumyadip; Gangopadhyay, Kaustav; Ghosh, Ashutosh; Seth, Sourav Kanti; Das, Rahul and Purkayastha, Pradipta. 2021."Arginine-Modified Fluorescent Gold Nanoclusters for Förster Resonance Energy Transfer with a Hemicyanine Dye: A Biofriendly Approach." ACS Applied Nanomaterials, 4, 305-312
  3. Bhunia, Soumyadip; Adhikari, Soumyanil and Purkayastha, Pradipta. 2020."Energy transfer from luminescent gold nanoclusters to non-luminescentsilver nanoparticles from a new perspective." J. Mol. Liq., 318, 114048
  4. Seth, Sourav Kanti and Purkayastha, Pradipta. 2020."Unusually large singlet oxygen (1O2) production by very weakly emissive pyrene-functionalized iridium(III) complex: Interplay between excited 3ILCT/3IL and 3MLCT states." Eur. J. Inorg. Chem., 2020, 2990-2997
  5. Mukherjee, Mousumi; Gangopadhyay, Kaustav; Das, Rahul and Purkayastha, Pradipta. 2020."Submission confirmation for development of non-ionic surfactant and protein coated ultrasmall silver nanoparticles: Increased viscoelasticity enables potency in biomedical applications." ACS Omega, 5, 8999-9006

All Publications: Click Here