Absorption changes under UV illumination in doped PMMA

Authors
Havermeyer, F Pruner, C Rupp, RA Schubert, DW Kratzig, E
Citation
F. Havermeyer et al., Absorption changes under UV illumination in doped PMMA, APP PHYS B, 72(2), 2001, pp. 201-205
Citations number
5
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
APPLIED PHYSICS B-LASERS AND OPTICS
ISSN journal
09462171 → ACNP
Volume
72
Issue
2
Year of publication
2001
Pages
201 - 205
Database
ISI
SICI code
0946-2171(200101)72:2<201:ACUUII>2.0.ZU;2-9
Abstract
The absorption spectra of poly(methyl methacrylate) (PMMA) doped with the p hotoinitiator 2,2-dimethoxy 2-phenylacetophenone (DMPA) change under illumi nation with UV light. Time-resolved measurements of the kinetics of the abs orption changes at 352 nm prove the existence of a second light-induced rea ction besides the expected light-induced decay of the photoinitiator. We pr opose a model for this second process which is in good agreement with the o bserved experimental facts.