Cation-Dependent Hot Carrier Cooling in the Lead-Free Bismuth Halide A3Bi2I9 (A = FA, MA, and Cs) Perovskite

NK Tailor, S Mishra, T Sharma, AK De… - The Journal of …, 2021 - ACS Publications
Lead-free halide perovskites, as environment-friendly materials, have received critical
interest in photovoltaic applications. In this regard, the bismuth halide perovskites …

Early time solvation dynamics probed by spectrally resolved degenerate pump‐probe spectroscopy

Y Silori, P Seliya, AK De - ChemPhysChem, 2019 - Wiley Online Library
The dynamic role of solvent in influencing the rates of physico‐chemical processes (for
example, polar solvation and electron transfer) has been extensively studied using time …

Probing the excited state dynamics of Venus: origin of dual-emission in fluorescent proteins

S Dhamija, B Thakur, P Guptasarma, AK De - Faraday Discussions, 2018 - pubs.rsc.org
Fluorescent proteins exhibit interesting excited state photochemistry, leading to bright
fluorescence emission that renders their versatile biological role and wide use as …

Tuning effect of local environment to control mechanism of fluorescence depolarization: Rotational diffusion and resonance energy transfer within homo-aggregates of …

Y Silori, AK De - Journal of Photochemistry and Photobiology A …, 2019 - Elsevier
Controlling excitation energy transfer within self-assembled molecular aggregates has been
a major challenge since such systems represent as prototypes for highly efficient light …

On the nature of initial solvation in bulk polar liquids: Gaussian or exponential?

S Chawla, S Dhamija, G Bhutani, AK De - The Journal of Chemical …, 2024 - pubs.aip.org
Measurement of time evolution of fluorescence of a probe solute has been a quintessential
technique to quantify how dipolar solvent molecules dynamically minimize the free energy of …

Excited-State Dynamics of a Substituted Fluorene Derivative. The Central Role of Hydrogen Bonding Interactions with the Solvent

BA Capistran, SH Yuwono, M Moemeni… - The Journal of …, 2021 - ACS Publications
Substituted fluorene structures have demonstrated unusual photochemical properties.
Previous reports on the substituted fluorene Schiff base FR0-SB demonstrated super …

Controlling balance between homo-FRET and hetero-FRET within hetero-chromophoric systems by tuning nature of solvent

Y Silori, AK De - Journal of Molecular Liquids, 2020 - Elsevier
Using fluorescence lifetime and time-resolved fluorescence anisotropy measurements, here
we report how the nature of the solvent controls Förster resonance energy transfer (FRET) in …

Effect of Nanoscale Confinement on Ultrafast Dynamics of Singlet Fission in TIPS‐Pentacene

Y Silori, S Chawla, A Yadav, AK De - ChemPhysChem, 2022 - Wiley Online Library
Singlet fission (SF) is a phenomenon for the generation of a pair of triplet excitons from
anexcited molecule in singlet electronic state interacting with another adjacent molecule in …

Intramolecular Relaxation Dynamics Mediated by Solvent–Solute Interactions of Substituted Fluorene Derivatives. Solute Structural Dependence

BA Capistran, SH Yuwono, M Moemeni… - The Journal of …, 2021 - ACS Publications
Several fluorene derivatives exhibit excited-state reactivity and relaxation dynamics that
remain to be understood fully. We report here the spectral relaxation dynamics of two …

Ultrafast Excited-State Dynamics of Tricarbocyanine Dyes Probed by Two-Dimensional Electronic Spectroscopy: Polar Solvation vs Photoisomerization

Y Silori, P Seliya, AK De - The Journal of Physical Chemistry B, 2020 - ACS Publications
Photophysical properties of tricarbocyanine dyes in various solvents have been widely
investigated using a variety of spectroscopic tools. However, the presence of several ground …