Issue 2, 2015
From the journal:

Photochemical & Photobiological Sciences

A theoretical study of the UV absorption of 4-methylbenzylidene camphor: from the UVB to the UVA region†

Luís Pinto da Silva,a   Paulo J. O. Ferreira,a   Margarida S. Mirandaa  and  Joaquim C. G. Esteves da Silva*a  

* Corresponding authors

a Centro de Investigação em Química, Departamento de Química e Bioquímica, Faculdade de Ciência, Universidade do Porto, s/n, Porto, Portugal
E-mail: jcsilva@fc.up.pt

Abstract

In this study, a theoretical approach was used to study the UV absorption of the UVB filter, 4-methylbenzylidene camphor. The main objective of this work was to design new UVA filters based on this rather photo-stable compound, so that photo-degradation in this UV region can be avoided without the use of other molecules. This objective was achieved by the simultaneous addition of two appropriate substituents, which led to red-shifts of up to 0.69 eV while maintaining appreciable oscillator strength. Also, useful structure–energy relationships were derived, which allow for the development of more UVA filters based on 4-methylbenzylidene camphor.

Graphical abstract: A theoretical study of the UV absorption of 4-methylbenzylidene camphor: from the UVB to the UVA region

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Article information

DOI
https://doi.org/10.1039/C4PP00392F
Article type
Paper
Submitted
20 Oct 2014
Accepted
07 Dec 2014
First published
08 Dec 2014

Photochem. Photobiol. Sci., 2015,14, 465-472

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A theoretical study of the UV absorption of 4-methylbenzylidene camphor: from the UVB to the UVA region

L. P. da Silva, P. J. O. Ferreira, M. S. Miranda and J. C. G. Esteves da Silva, Photochem. Photobiol. Sci., 2015, 14, 465 DOI: 10.1039/C4PP00392F

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