Steady-state and time-resolved fluorescence spectroscopic probing of microstructures and properties of perfluorinated polyelectrolyte membranes

被引：14

作者：

Bunker, CE ^{[1
]}

Ma, B ^{[1
]}

Simmons, KJ ^{[1
]}

Rollins, HW ^{[1
]}

Liu, JT ^{[1
]}

Ma, JJ ^{[1
]}

Martin, CW ^{[1
]}

DesMarteau, DD ^{[1
]}

Sun, YP ^{[1
]}

机构：

[1] Clemson Univ, Howard L Hunter Chem Lab, Dept Chem, Clemson, SC 29634 USA

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 1998年 / 459卷 / 01期

基金：

美国国家科学基金会;

关键词：

luminescent probes; Nafion (R); sulfonimide ionomer;

D O I：

10.1016/S0022-0728(98)00250-2

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A systematic luminescence spectroscopic study of the microstructures and properties of Nafion(R), the Dow Chemical films, and the newly synthesized sulfonimide ionomer membrane is reported. The strongly environment-sensitive luminescent probes 6-propionyl-2-(N,N-dimethylamino)naphthalene, 4-(N,N-dimethylamino)benzonitrile, pyrene, and ethidium bromide were used. The results suggest that the different perfluorinated ionomer membranes have generally similar properties with respect to the luminescent molecular probes and that the membrane structures consist of a substantial region that may be characterized as a heterogeneous mixture of water molecules and branches of the perfluorinated polymers. In addition, the effects of thermally stressing the ionomer membranes in an aqueous solution at temperatures up to 250 degrees C on the properties of the membranes are evaluated and discussed. (C) 1998 Elsevier Science S.A. All rights reserved.

引用

页码：15 / 28

页数：14

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