✦ LIBER ✦

High pressure studies of isoquinoline luminescence in polymeric media

✍ Scribed by A.M. Rollinson; G.B. Schuster; H.G. Drickamer

Publisher: Elsevier Science
Year: 1978
Tongue: English
Weight: 294 KB
Volume: 59
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(78)85041-6

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✦ Synopsis

The fluorescence peak of isoquinoline increases stro_ngly in intensity with increasing pressure in polymethylmethacrylate (PBIMA) and in polyisobutylene (PIB). In polyvinylalcohol the intensity decreases as the pressure increases. In all three cases the emission peak shifts to lower energy as the pressure increases_ The results are consistent with the hypothesis that the z-z* state lies higher in energy than the n-2-r * state in non-hydrogen bonding soIvenrs, but that the situation is reversed in hydrogen bonding solvents_

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