Issue 9, 2019

Wavelength dependence and wavelength selectivity in photochemical reactions

Abstract

The concepts of wavelength dependence and wavelength selectivity have been commonly used by organic photochemists for a long time. The aim of the present article is to offer a selection of relevant cases where the choice of the irradiation wavelength played a key role in the outcome of a photochemical path. Wavelength dependence can be related to the variation in the efficiency (but not the fate) of a process. Herein, three cases have been recognized where a wavelength-selectivity paradigm operates. Indeed, a different wavelength may (i) activate a different chromophore in a single molecule, (ii) induce the population of different reactive excited states and (iii) sequentially populate the excited state of a compound and the excited state of an intermediate photogenerated from it, which show a different reactivity.

Graphical abstract: Wavelength dependence and wavelength selectivity in photochemical reactions

Article information

Article type
Perspective
Submitted
08 Nov. 2018
Accepted
10 Jan. 2019
First published
11 Jan. 2019

Photochem. Photobiol. Sci., 2019,18, 2094-2101

Wavelength dependence and wavelength selectivity in photochemical reactions

S. Protti, D. Ravelli and M. Fagnoni, Photochem. Photobiol. Sci., 2019, 18, 2094 DOI: 10.1039/C8PP00512E

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