Solid-state 13C NMR chemical shift nonequivalences in a polydiacetylene crystal

被引：6
|
作者：
Cholli, AL [1 ]
Sandman, DJ
Maas, W
机构：
[1] Univ Massachusetts Lowell, Dept Chem, Ctr Adv Mat, Lowell, MA 01854 USA
[2] Bruker Instruments Inc, Billerica, MA 01821 USA
来源：
MACROMOLECULES | 1999年 / 32卷 / 13期
关键词：
D O I：
10.1021/ma982035d
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
In this study, 13C cross-polarization and magic-angle-spinning (CP-MAS) nuclear magnetic resonance (NMR) spectra were recorded for two polydiacetylene (PDA) crystals: 1,1,6,6-tetraphenylhexadiyndiamine (THD, 1a) and 1,6-di-N-carbazolyl-2,4-hexadiyne (DCH, 1b). The data for 1b confirm those of an earlier report. For 1a, a site-splitting of the crystallography nonequivalent acetylenic and methylene carbons was observed.
引用
收藏
页码：4444 / 4446
页数：3
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