Photoinitiators with functional groups. VI. Chemically bound sensitizers
作者： Robert Liska
DOI: 10.1002/POLA.20064
关键词:
摘要: Several benzophenone- and thioxanthone-based photosensitizers (PSs) were covalently bonded to hydroxyalkylphenone- aminoalkylphenone-based photoinitiators (PIs) enhance the rate of excitation-transfer effect due close vicinity PS PI. The properties these new systems investigated with UV spectroscopy photo-differential scanning calorimetry. Broadband irradiation experiments selective excitation carried out for physical mixtures PI/PS combinations investigate transfer. Selective chromophore revealed that energy transfer was significantly increased in initiators comparison mixtures. This most pronounced hydroxyalkylphenones sensitized by suitable benzophenone derivatives, especially at low PI concentrations. © 2004 Wiley Periodicals, Inc. J Polym Sci Part A: Chem 42: 2285–2301,
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