A UVA FILTER (4-TERT-BUTYL-4'-METHOXYDIBENZOYLMETHANE) - PHOTOPROTECTION REFLECTS PHOTOPHYSICAL PROPERTIES

Authors
ANDRAE I BRINGHEN A BOHM F GONZENBACH H HILL T MULROY L TRUSCOTT TG
Citation
I. Andrae et al., A UVA FILTER (4-TERT-BUTYL-4'-METHOXYDIBENZOYLMETHANE) - PHOTOPROTECTION REFLECTS PHOTOPHYSICAL PROPERTIES, Journal of photochemistry and photobiology.B, Biology, 37(1-2), 1997, pp. 147-150
Citations number
7
Categorie Soggetti
Biophysics,Biology
Journal title
Journal of photochemistry and photobiology.B, Biology → ACNP
ISSN journal
10111344
Volume
37
Issue
1-2
Year of publication
1997
Pages
147 - 150
Database
ISI
SICI code
1011-1344(1997)37:1-2<147:AUF(-P>2.0.ZU;2-H
Abstract
A dibenzoylmethane-based UVA sunscreen, 4-tert-butyl-4'-methoxydibenzo ylmethane has been shown to protect human lymphoid cells efficiently w hen present in high concentration (10(-2) M). The molecular mechanisms of this behaviour are proposed to be related to a mixture based on en ol-transient-keto forms. At much lower sunscreen concentrations (10(-5 )-10(-10) M) a switch from UVA to UVB protection is observed. This sup ports the theory of a conversion to a transient species absorbing in t he UVB.