Current research interests:
Techniques: Single molecule/particle spectroscopy, Ultrafast - ultraslow dynamics (femtoseconds - seconds) etc.
Inorganic Systems: Perovskite nanocrystals, Toxic metal free Quantum Dots etc.
Organic Systems: (Flexible) Photoluminescent crystals, Meta-fluorophores etc.
Perovskite nanocrystals
"Beyond Surface Facets and Morphology: Precision Silica Shelling for Enhanced Luminescence and Stability in Halide Perovskite Nanocrystals",
J. Am. Chem. Soc. 2025, 147, 45043-45056.
"Super-Absorber, Super-Bright, Nearly-Non-Blinking CsPbI3 Perovskite Nanocrystal",
Adv. Optical Mater. 2025, 13, 2402608.
"Transforming exciton dynamics in perovskite nanocrystal through Mn doping",
Nanoscale 2023, 15, 6947-6953.
"Near-Ergodic CsPbBr3 Perovskite Nanocrystal with Minimal Statistical Aging",
J. Phys. Chem. Lett. 2021, 12, 10169-10174.
"Unravelling Halide Dependent Charge Carrier Dynamics in CsPb(Br/Cl)3 Perovskite Nanocrystals",
Nanoscale 2021, 13, 3654 - 3661.
"Extent of Shallow/Deep Trap States Beyond Conduction Band Minimum in Defect Tolerant CsPbBr3 Perovskite Quantum Dot: Control Over the Degree of Charge Carrier Recombination",
J. Phys. Chem. Lett. 2020, 11, 1702-1707.
"Instantaneous, Room Temperature, Open Air Atmosphere, Solution Phase Synthesis of Perovskite Quantum Dots through Halide Exchange Employing Non-Metal Based Inexpensive HCl/HI: Ensemble and Single Particle Spectroscopy",
Nanoscale Adv. 2019, 1, 3506-3513.
Toxic metal free Quantum Dots
"Beneficial Intrinsic Hole Trapping and Its Amplitude Variation in a Highly Photoluminescent Toxic-Metal-Free Quantum Dot",
J. Phys. Chem. Lett. 2023, 14, 260–266.
"Excitation-Energy-Dependent Photoluminescence Quantum Yield is Inherent to Optically Robust Core/Alloy-Shell Quantum Dots in a Vast Energy Landscape",
J. Phys. Chem. Lett. (Perspective Article(Invited)) 2022, 13, 2404-2417.
"Ultrafast dynamics and ultrasensitive single particle spectroscopy of optically robust core/alloy shell semiconductor quantum dots",
Phys. Chem. Chem. Phys. (Perspective Article(Invited)) 2022, 24, 8578-8590.
"Near-Unity Photoluminescence Quantum Yield and Highly Suppressed Blinking in a Toxic-Metal-Free Quantum Dot",
J. Phys. Chem. Lett. 2021, 12, 1426-1431.
Ultrafast Dynamics and Ultrasensitive Single-Particle Intermittency in Small-Sized Toxic Metal Free InP-Based Core/Alloy-Shell/Shell Quantum Dots: Excitation Wavelength Dependency Toward Variation of PLQY",
J. Phys. Chem. C 2019, 123, 28502−28510.
"Suppressed Blinking Under Normal Air Atmosphere in Toxic Metal Free, Small Sized, InP Based Core/Alloy-Shell/Shell Quantum Dot",
J. Phys. Chem. Lett. 2019, 10, 4330-4338.
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.
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
Techniques
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.
Processes
Resonance Energy Transfer (FRET), Single Enzyme Kinetics, Single Protein Conformational Fluctuation, Translational/Rotational diffusion, Blinking, etc.
Materials
Quantum Dots/Rods, Fluoro-Sensors, Enzymes, Proteins, Ionic Liquids, Nano-materials.