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

• Type: Article in International Scientific Journal
• Date: 2015

Authors

Luis Pinto da Silva (Author) Other; Paulo J O Ferreira (Author) Other; Margarida S Miranda (Author) Other; Joaquim C G E Esteves da Silva (Author) FCUP

Journal

Title: Photochemical & Photobiological Sciences

Vol. 14

Pages: 465-472

ISSN: 1474-905X

Publisher: Springer Nature

Indexing

ISI Web of Knowledge - 9 Citations

Scopus - 9 Citations

Scientific classification

FOS: Natural sciences > Chemical sciences

Other information

Authenticus ID: P-00A-5YQ

DOI: 10.1039/c4pp00392f

Abstract (EN): 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8