CONCENTRATION-DEPENDENCE OF PYRENE EXCIMER FORMATION IN DOPED POLYETHYLENE

Authors
SZADKOWSKANICZE M WOLSZCZAK M KROH J MAYER J
Citation
M. Szadkowskanicze et al., CONCENTRATION-DEPENDENCE OF PYRENE EXCIMER FORMATION IN DOPED POLYETHYLENE, Journal of photochemistry and photobiology. A, Chemistry, 75(2), 1993, pp. 125-129
Citations number
18
Categorie Soggetti
Chemistry Physical
Journal title
Journal of photochemistry and photobiology. A, Chemistry → ACNP
ISSN journal
10106030
Volume
75
Issue
2
Year of publication
1993
Pages
125 - 129
Database
ISI
SICI code
1010-6030(1993)75:2<125:COPEFI>2.0.ZU;2-Q
Abstract
Pyrene-doped low density polyethylene films were studied by steady sta te and time-resolved fluorescence emission Spectroscopy at room temper ature for dopant concentrations up to about 1.5 x 10(-2) mol dm-3. The excimer fluorescence observed in these films for a high pyrene concen tration (about 10(-2) mol dm-3) was proposed to result either from pyr ene molecular pairs close to the excimer configuration or from pyrene aggregates which satisfy the geometrical requirements for excimer form ation.