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Singlet energy migration and excimer formation in polymers of 2-tert-butyl-6-vinylnaphthalene

✍ Scribed by Nakahira, Takayuki ;Sakuma, Takashi ;Iwabuchi, Susumu ;Kojima, Kuniharu

Publisher
Wiley (John Wiley & Sons)
Year
1982
Tongue
English
Weight
705 KB
Volume
20
Category
Article
ISSN
0098-1273

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✦ Synopsis

Abstract

The homopolymer of 2‐tert‐butyl‐6‐vinylnaphthalene (BVN) and its copolymers with styrene were prepared to examine the effects of the bulky tert‐butyl groups on singlet energy migration and excimer formation among the naphthalene chromophores. The intensity of naphthalene excimer emission relative to that of monomer emission was found to depend linearly on the concentration of the potential excimer forming site, i.e., the BVN dyad fraction of the polymer. The rate of fluorescence quenching by biacetyl, on the other hand, increased only slightly with the increase in the BVN content. These results are consistent with the slow energy hopping model and suggest that the neighboring naphthalene chromophores are virtually isolated from one another owing to the unfavorable interactions of the tert‐butyl groups.

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