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Updated: Aug 19, 2026

Proton Transfer and Protein Conformation Dynamics in Photosensitive Proteins by Time-resolved Step-scan Fourier-transform Infrared Spectroscopy
Published on: June 27, 2014
Short- and long-range spectral perturbants: dependence on solvent concentration and chromophore structure
Abstract:
Some perturbing solvents appear to be short-range perturbants at 20% concentration, but long-range at 40%, based on delta epsilon/epsilon for phenols and their ethers. The apparent long- or short-range character of a solvent also depends on the chromophore. It is possible that perturbants, which are apparently of long-range character at 20% concentration, are really of short-range character because they interact rather similarly with phenols and their ethers. For ethers delta epsilon/epsilon increases faster than for phenols with increasing concentrations of some perturbants.
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