Formation of carbynoid structures by chemical dehydrohalogenation of poly(vinylidene chloride). A C-13 solid-state NMR study

被引：18

作者：

Evsyukov, SE ^{[1
]}

Paasch, S ^{[1
]}

Thomas, B ^{[1
]}

Heimann, RB ^{[1
]}

机构：

[1] TECH UNIV BERGAKAD FREIBERG,D-09596 FREIBERG,GERMANY

来源：

BERICHTE DER BUNSEN-GESELLSCHAFT-PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 1997年 / 101卷 / 05期

关键词：

molecular structure; polymers; spectroscopy; nuclear magnetic resonance; CARBON; DEHYDROCHLORINATION; DEHYDROFLUORINATION; FLUORIDE);

D O I：

10.1002/bbpc.19971010509

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The products of the interaction of poly(vinylidene chloride) (PVDC) powder with a mixture of alcoholic KOH solution and tetrahydrofuran were studied by solid-state C-13 NMR spectroscopy. The reaction was found to be a complex process involving dehydrochlorination as a target reaction and some side reactions, viz., nucleophilic substitution, cross-linking, and secondary transformations of intermediate and final products. The endproducts are ''carbynoid-type'' polymeric materials containing short carbyne fragments along with various defect links such as alkoxy- and hydroxy groups, carbonyl species, as well as cross-links. The reasons for the concurrent formation of both polyyne and cumulene structures, and the nature of side reactions are discussed.

引用

页码：837 / 841

页数：5

共 24 条

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