INVESTIGATION OF LOCAL MOLECULAR MOTIONS IN BULK POLYMERS THROUGH THE EMISSION PROPERTIES OF AN INTRAMOLECULAR EXCIMER-FORMING PROBE

被引：22

作者：

JING, DP

BOKOBZA, L

MONNERIE, L

COLLART, P

DESCHRYVER, FC

机构：

[1] ECOLE SUPER PHYS & CHIM IND,PHYSICOCHIM STRUCT & MACROMOLEC LAB,10 RUE VAUQUELIN,F-75231 PARIS 05,FRANCE

[2] CATHOLIC UNIV LEUVEN,DEPT CHEM,B-3030 HEVERLE,BELGIUM

来源：

POLYMER | 1990年 / 31卷 / 01期

关键词：

elastomeric matrices; fluorescence; free volume; intramolecular excimer; meso-bis[1-(2-pyrenyl)ethyl] ether; polymer mobility;

D O I：

10.1016/0032-3861(90)90359-7

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Intramolecular excimer formation of meso-bis[1-(2-pyrenyl)ethyl] ether dissolved in different elastomers has been investigated. The intramolecular conformational change required for the excimer sampling process is shown to be controlled by the segmental motions of the polymer matrix involved in the glass transition phenomenon. The results show that, at a fixed frequency of the probe motion, the fractional free volume as well as the free volume per atomic group vary from one polymer to another. © 1990.

引用

页码：110 / 114

页数：5

共 16 条

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