Journal ArticleDOI
Subpicosecond Measurements of Polar Solvation Dynamics: Coumarin 153 Revisited
TLDR
In this article, the authors used time-resolved emission measurements of the solute coumarin 153 (C153) to probe the time dependence of solvation in 24 common solvents at room temperature.Abstract:
Time-resolved emission measurements of the solute coumarin 153 (C153) are used to probe the time dependence of solvation in 24 common solvents at room temperature. Significant improvements in experimental time resolution ({approx}100 fs instrument response) as well as corresponding improvements in analysis methods provide confidence that all of the spectral evolution (including both the inertial and the diffusive parts of the response) are observed in these measurements. Extensive data concerning the steady-state solvatochromism of C153, coupled to an examination of the effects of vibrational relaxation, further demonstrate that the spectral dynamics being observed accurately monitor the dynamics of nonspecific solvation. Comparisons to theoretical predictions show that models based on the dielectric response of the pure solvent provide a semiquantitative understanding of the dynamics observed. 156 refs., 26 figs., 5 tabs.read more
Citations
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Structural Changes Accompanying Intramolecular Electron Transfer: Focus on Twisted Intramolecular Charge-Transfer States and Structures
TL;DR: The Rehybridization of the Acceptor (RICT) and Planarization ofThe Molecule (PICT) III is presented, with a comparison of the effects on yield and radiationless deactivation processes.
Journal ArticleDOI
Proton-Coupled Electron Transfer
David R. Weinberg,Christopher J. Gagliardi,Jonathan F. Hull,Christine Fecenko Murphy,Caleb A. Kent,Brittany C. Westlake,Amit Paul,Daniel H. Ess,Dewey G. McCafferty,Thomas J. Meyer +9 more
TL;DR: Proton-coupled electron transfer is an important mechanism for charge transfer in a wide variety of systems including biology- and materials-oriented venues and several are reviewed.
Journal ArticleDOI
Global and target analysis of time-resolved spectra
TL;DR: The methodology for global and target analysis of time-resolved spectra is reviewed and the combination of a model for the kinetics and for the spectra of the components results in a more powerful spectrotemporal model.
Journal ArticleDOI
Chemical approaches to artificial photosynthesis. 2.
TL;DR: The underlying physical principles--light absorption, energy transfer, radiative and nonradiative excited-state decay, electron transfer, proton-coupled electronTransfer, and catalysis--are outlined with an eye toward their roles in molecular assemblies for energy conversion.
References
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Journal ArticleDOI
Dipole Solvation in Nondipolar Solvents: Experimental Studies of Reorganization Energies and Solvation Dynamics†
TL;DR: In this article, the Stokes shifts observed in both non-ipolar and dipolar solvents can be consistently understood in terms of the relative strength of the interactions between the permanent charge distributions of the solute and solvent molecules.
BookDOI
Ultrafast dynamics of chemical systems
TL;DR: In this article, the authors introduce the Ultrafast Transient Raman Investigations of Condensed Phase Dynamics (UTRIMANS) and its application in the analysis of condensed phase photochemical molecules.
Journal ArticleDOI
Ultrafast measurements of the dynamics of solvation in polar and non-dipolar solvents
TL;DR: In this paper, the dynamics of solvation of the probe solute coumarin 153 have been measured with ~100 fs time resolution using the fluorescence upconversion technique.
Journal ArticleDOI
Solvation dynamics of dye molecules in polar solvents studied by time resolved hole burning spectroscopy
TL;DR: In this paper, the authors measured the ground state hole spectra of cresyl violet in acetonitrile, methanol, and ethanol at room temperature at subpicosecond to picosecond time region.
Journal ArticleDOI
An interaction-site representation of the dynamic structure factor of liquid and the solvation dynamics
TL;DR: In this paper, a recent development in the theory for the dynamics structure factor of molecular liquids, which employs the interaction-site model, is outlined and applied for a description of the solvation dynamics associated with a photo-excitation of a molecule in polar liquid.