SUBSTITUENT EFFECTS IN THE C-13 NUCLEAR MAGNETIC-RESONANCE SPECTRA OF ARYL ETHER COPOLYMERS .4. MATERIALS CONTAINING SULFONATED ARYL RINGS

被引：9

作者：

ABRAHAM, RJ ^{[1
]}

HAWORTH, IS ^{[1
]}

BUNN, A ^{[1
]}

HEARMON, RA ^{[1
]}

机构：

[1] ICI PLC,WILTON MAT CTR,MIDDLESBROUGH TS6 8JE,ENGLAND

来源：

POLYMER | 1990年 / 31卷 / 01期

关键词：

!sup]13[!/sup]C nuclear magnetic resonance; aryl ether; aryl ketone; aryl sulphone; copolymer; substituent effect; sulphonation;

D O I：

10.1016/0032-3861(90)90362-3

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Polymeric materials containing 1,4-disubstituted aryl rings with ether (E), ketone (K) and/or sulphone (S) linkages, and in which certain rings are monosulphonated, give extremely complex 13C nuclear magnetic resonance (n.m.r.) spectra. The quaternary carbon atom shifts, which are particularly sensitive to changes in the monomer sequences and sulphonation pattern, have been assigned to specific sequences and pattern differences, with signals characterized by either ortho or meta sulphonation of rings up to three rings distant from the observed carbon atom (C*) being resolved. The shifts obtained for the sulphonated ES/EES copolymer, when compared with those of the non-sulphonated material, suggest the major transmission mechanism for sulphonation effects to be via the π system, with a possible anisotropic effect contributing to the longer-range shifts, induced by the specific conformation the chain adopts. This argument leads to a full assignment, including specific sulphonation patterns, of the sulphonated ES/EES copolymer 13C n.m.r. spectrum in deuterated dimethylsulphoxide (DMSO-d6). © 1990.

引用

页码：126 / 129

页数：4

共 21 条

[1] SUBSTITUENT EFFECTS IN THE C-13 NUCLEAR MAGNETIC-RESONANCE SPECTRA OF ARYL ETHER COPOLYMERS .2. ETHER SULFONE ETHER ETHER SULFONE AND ETHER SULFONE ETHER KETONE COPOLYMERS IN DEUTERATED DIMETHYLSULFOXIDE [J].