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Photochemistry and photophysics from the excited states of diaryl ketyl radicals

Photochemistry and photophysics from the excited states of diaryl ketyl radicals Research on Chemical Intermediates, 12 (1989) 187-201 Elsevier Science Publishers B.V., Amsterdam -- Printed in The Netherlands PHOTOCHEMISTRY AND PHOTOPHYSICS FROM THE EXCITED STATES OF DIARYL KETYL RADICALS [1] J.C. NETTO-FERREIRA AND J.C. SCAIANO Division of Chemistry National Research Council Ottawa, Canada K1A 0R6 CONTENTS I. Introduction ............................................. 187 II. Generation of Diaryl Ketyl Radicals ....................... 188 III. Spectroscopic Characteristics of Excited Ketyl Radicals ...... 190 A. Transient absorption spectra ......................... 190 B. Fluorescence spectra ................................ 190 IV. Kinetics and Mechanisms of the Intramolecular Decay of Excited Ketyl Radicals ........................................... 193 V. Kinetics of the Intermolecular Quenching of Excited Ketyl Radicals ................................................ 196 VI. Energy Transfer Processes Involving Ketyl Radicals ......... 198 VII. References ............................................... 199 I. INTRODUCTION Pulsed laser excitation of organic substrates can easily induce two- photon processes involving the generation and excitation of a reaction intermediate by a single laser pulse. These processes, frequently studied using two-laser techniques, have been the subject of considerable interest over the last few years. While a great deal of knowledge has been acquired in the last five years, in the case of the diphenyl ketyl radical this process, and the resulting radical fluorescence, have been known for at least fifteen http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

Photochemistry and photophysics from the excited states of diaryl ketyl radicals

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Publisher
Springer Journals
Copyright
Copyright
Subject
Chemistry; Catalysis; Physical Chemistry; Inorganic Chemistry
ISSN
0922-6168
eISSN
1568-5675
DOI
10.1163/156856789X00122
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Abstract

Research on Chemical Intermediates, 12 (1989) 187-201 Elsevier Science Publishers B.V., Amsterdam -- Printed in The Netherlands PHOTOCHEMISTRY AND PHOTOPHYSICS FROM THE EXCITED STATES OF DIARYL KETYL RADICALS [1] J.C. NETTO-FERREIRA AND J.C. SCAIANO Division of Chemistry National Research Council Ottawa, Canada K1A 0R6 CONTENTS I. Introduction ............................................. 187 II. Generation of Diaryl Ketyl Radicals ....................... 188 III. Spectroscopic Characteristics of Excited Ketyl Radicals ...... 190 A. Transient absorption spectra ......................... 190 B. Fluorescence spectra ................................ 190 IV. Kinetics and Mechanisms of the Intramolecular Decay of Excited Ketyl Radicals ........................................... 193 V. Kinetics of the Intermolecular Quenching of Excited Ketyl Radicals ................................................ 196 VI. Energy Transfer Processes Involving Ketyl Radicals ......... 198 VII. References ............................................... 199 I. INTRODUCTION Pulsed laser excitation of organic substrates can easily induce two- photon processes involving the generation and excitation of a reaction intermediate by a single laser pulse. These processes, frequently studied using two-laser techniques, have been the subject of considerable interest over the last few years. While a great deal of knowledge has been acquired in the last five years, in the case of the diphenyl ketyl radical this process, and the resulting radical fluorescence, have been known for at least fifteen

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Research on Chemical Intermediates – Springer Journals

Published: Mar 13, 2009

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