Triplet State Photophysics

Molar Absorption Coefficients of
Transient Species in Solution

A definitive review of methods for measuring the molar absorptivity (aka extinction coefficient) of transient species in solution commissioned by the Organic Chemistry Division (Commission on Photochemistry) ot the International Union of Pure and Applied Chemistry. A table of recommended values for the benzophenone ketyl radical and a number of important triplet state transients is included.

Published by

R. Bonneau, I. Carmichael, and G.L. Hug
Pure & Appl. Chem. 63 289-99 (1991) __ Ordering info.

The initial compilation of triplet-triplet absorption data was accompanied by a rigorous discussion of methodology for measuring extinction coefficients and followed by a detailed statistical analysis of the reported extinction coefficients. Some more recent values appear in the Handbook of Photochemistry.

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This document prepared by Ian Carmichael

e-mail: ian @convex.rad.nd.edu

Work supported by:

Office of Basic Energy Sciences
United States Department of Energy

Standard Reference Data
National Institute of Standards and Technology
Last update: Nov. 21, 1994