Dr. Roopali Prajapati

Assistant Professor, Chemistry and Biochemistry



I have completed B.Sc. and M.Sc. (Physical Chemistry) from Ramjas College, Delhi University. Then, I joined the research group of Prof. Tushar Kanti Mukherjee in IIT Indore. My PhD research work was focused on understanding and unveiling the fundamental mechanism and dynamics of resonance excitation energy transfer from various photoexcited donors such as semiconductor quantum dots, carbon dots, and dyes to nearby metal nanoparticles and nanoclusters. Furthermore, I also explored the effect of various microheterogeneous environments such as surfactants, polymers, and DNA on the efficiency of resonance excitation energy transfer. After completing PhD from IIT Indore, I joined as Postdoctoral fellow in Prof. Sameer Sapras research group at IIT Delhi where I have worked on the development of single-molecule photoluminescence set-up to analyze different quantum dots and perovskite nanomaterials.



  • Ph.D. (IIT Indore)
  • M.Sc. (Ramjas College, Delhi University)

  • Prajapati, R.; Chatterjee, S.; Bhattacharya, A.; Mukherjee, T. K. Surfactant-Induced Modulation of Nanometal Surface Energy Transfer from Silicon Quantum Dots to Silver Nanoparticles. J. Phys. Chem. C, 2015, 119, 13325-13334.
  • Prajapati, R.; Chatterjee, S.; Kannaujiya, K.; Mukherjee, T. K. Effect of Compartmentalization of Donor and Acceptor on the Ultrafast Resonance Energy Transfer from DAPI to Silver Nanoclusters. Nanoscale, 2016, 8, 13006-13016.
  • Prajapati, R.; Bhattacharya, A.; Mukherjee, T. K. Resonant Excitation Energy Transfer from Carbon Dots to Different Sized Silver Nanoparticles. Phys. Chem. Chem. Phys., 2016, 18, 28911-28918.
  • Prajapati, R.; Mukherjee, T. K. Effect of Surfactant Assemblies on the Resonance Energy Transfer from 4', 6-Diamidino-2-phenylindole to Silver Nanoclusters, J. Photochem. Photobiol. A., 2017, 353, 130-137.
  • Chatterjee, S.; Prajapati, R.; Bhattacharya, A.; Mukherjee, T. K. Microscopic Evidence of “Necklace and Bead”-Like Morphology of Polymer-Surfactant Complexes A Comparative Study on PVP-SDS and PDADMAC-SDS Systems. Langmuir, 2014, 30, 9859-9865.
  • Bhattacharya, A.; Prajapati, R.; Chatterjee, S.; Mukherjee, T. K. Concentration-Dependent Reversible Self-Oligomerization of Serum Albumins through Intermolecular Β-Sheet Formation. Langmuir, 2014, 30, 14894-14904.
  • Bhattacharya, A.; Chatterjee, S.; Prajapati, R.; Mukherjee, T. K. Size-Dependent Penetration of Carbon Dots inside the Ferritin Nanocages Evidence for the Quantum Confinement Effect in Carbon Dots. Phys. Chem. Chem. Phys., 2015, 17, 12833-12840

Area of Intrest

  • The resonance excitation energy transfer based probes involving quantum dots for various sensing applications