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Synthesis, stereochemistry and fluorescence properties of polystyrenes having carbazole substituents

✍ Scribed by R. Solaro; G. Galli; F. Masi; A. Ledwith; E. Chiellini

Publisher
Elsevier Science
Year
1983
Tongue
English
Weight
482 KB
Volume
19
Category
Article
ISSN
0014-3057

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✦ Synopsis

Abstraet--Poly(styrene)s bearing carbazole substituents at various positions were synthesised by homopolymerisation of 3-(9-carbazolylmetbyl)styrene and 4-(9-carbazolylmethyl)styrene and by chemical modification of preformed poly(styrene)s prepared in the presence of different initiators. Main chain stereochemistry of the polymer samples was investigated by 13C-NMR and related to the initiation process. The fluorescence emission spectra were independent of the stereochemistry of polymer backbone and exhibited only monomer emission. In no case was there any evidence of excimer fluorescence. In contrast, energy migration appeared to be very efficient, as evaluated by measurements of the degree of fluorescence polarisation relative to that of a structurally related model compound

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