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Wavelength dependence and wavelength selectivity in photochemical reactions

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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

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Publication details

The article was received on 08 Nov 2018, accepted on 10 Jan 2019 and first published on 11 Jan 2019


Article type: Perspective
DOI: 10.1039/C8PP00512E
Citation: Photochem. Photobiol. Sci., 2019, Advance Article

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    Wavelength dependence and wavelength selectivity in photochemical reactions

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

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