Research interest: Single molecule/particle spectroscopy, Ultrafast fluorescence dynamics, Probe development.


Semiconductor Quantum Dots

"Spectral and Temporal Optical Behavior of Blue‑, Green‑, Orange‑,and Red-Emitting CdSe-Based Core/Gradient Alloy Shell/Shell Quantum Dots: Ensemble and Single-Particle Investigation Results",

J. Phys. Chem. C 2016, 120, 3483−3491.

"Highly Photoluminescent InP Based Core Alloy Shell QDs from Air- Stable Precursors: Excitation Wavelength Dependent Photoluminescence Quantum Yield, Photoluminescence Decay Dynamics, and Single Particle Blinking Dynamics",

J. Phys. Chem. C, 2018, 122, 964-973.

Fluorescent protein chromophore

"Chemical tweaking of a non-fluorescent GFP chromophore to a highly fluorescent coumarinic fluorophore: application towards photo-uncaging and stem cell imaging",

RSC Adv., 2013, 3, 24021.

"Dual Fluorescence in GFP Chromophore Analogues: Chemical Modulation of Charge Transfer and Proton Transfer Bands",

J. Phys. Chem. B, 2016, 120, 3503.

"Ultrafast Dynamics of a GFP Chromophore Analogue: Competition between Excited-State Proton Transfer and Torsional Relaxation",

J. Phys. Chem. B, 2016, 120, 9716.

"Strong electron donation induced differential nonradiative decay pathways for para and meta GFP chromophore analogues",

Phys.Chem.Chem.Phys., 2015, 17, 20515.

Solvent H-bond accepting ability induced conformational change and its influence towards fluorescence enhancement and dual fluorescence of hydroxy meta-GFP chromophore analogue",

Phys. Chem. Chem. Phys., 2016, 18, 24332.

Carbon Dots

"Molecular origin of photoluminescence of carbon dots: Aggregation induced orange-red emission",

Phys. Chem. Chem. Phys., 2016, 18, 28274.

"On the Molecular Origin of Photoluminescence of Nonblinking Carbon Dot",

J. Phys. Chem. C 2017, 121, 9634-9641.

"Where does the fluorescing moiety reside in a carbon dot?” – Investigations based on fluorescence anisotropy decay and resonance energy transfer dynamics",

Phys. Chem. Chem. Phys., 2018, 20, xxxx-yyyy.

Room temperature ionic liquids

"On the heterogeneity of fluorescence lifetime of room temperature ionic liquids: onset of a journey for exploring red emitting dyes",

Chem. Commun., 2012, 48, 6250–6252.

"On the Nanoscopic Environment a Neutral Fluorophore Experiences in Room Temperature Ionic Liquids",

J. Phys. Chem. C 2014, 118, 5051−5057.

"What type of nanoscopic environment does a cationic fluorophore experience in room temperature ionic liquids?",

Phys. Chem. Chem. Phys., 2015, 17, 16587--1659.

Research Interest



Single Molecule Spectroscopy, Confocal/ TIRF/ Wide-Field Microscopy, Fluorescence Correlation Spectroscopy (FCS, FCCS, FLCS), Single Molecule/Particle Tracking, Ultrafast Fluorescence Spectroscopy, Magnetic Tweezing, Solvation Dynamics, Translational Dynamics, Rotational Dynamics etc.



Resonance Energy Transfer (FRET), Single Enzyme Kinetics, Single Protein Conformational Fluctuation, Translational/Rotational diffusion, Blinking, etc.



Quantum Dots/Rods, Fluoro-Sensors, Enzymes, Proteins, Ionic Liquids, Nano-materials.