STRUCTURAL STUDY OF THERMOCHROMISM IN POLY(DI-NORMAL-ALKYLGERMANES) BY RAMAN-SPECTROSCOPY IN THE VISIBLE AND NEAR-INFRARED

被引：31

作者：

HALLMARK, VM ^{[1
]}

ZIMBA, CG ^{[1
]}

SOORIYAKUMARAN, R ^{[1
]}

MILLER, RD ^{[1
]}

RABOLT, JF ^{[1
]}

机构：

[1] IBM CORP,DIV RES,ALMADEN RES CTR,650 HARRY RD,SAN JOSE,CA 95120

来源：

MACROMOLECULES | 1990年 / 23卷 / 08期

关键词：

D O I：

10.1021/ma00210a034

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

UV-vis studies of symmetrically substituted poly(di-n-alkylgermanes) indicate that these polymers exhibit a thermochromic transition at temperatures considerably reduced from that of their polysilane counterparts. Fourier transform Raman spectroscopy using Nd:YAG excitation has been used in conjunction with thermal analysis and conventional Raman spectroscopy to assess the role of the side chains and the germanium backbone in the onset of thermochromism. In order to make a detailed band assignment, a series of Ge oligomers have been synthesized and investigated in both the melt and solid state. Their spectra were obtained using conventional Raman spectroscopy in the visible and the data used to differentiate between backbone and side-chain vibrations. © 1990, American Chemical Society. All rights reserved.

引用

页码：2346 / 2350

页数：5

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