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论文类型：期刊论文

发表时间：2015-10-13

发表刊物：MACROMOLECULES

收录刊物：SCIE、EI、Scopus

卷号：48

期号：19

页面范围：6941-6947

ISSN号：0024-9297

摘要：The spectroscopic assignment of poly(cyclopentene carbonate)s at the diad level was performed by using two kinds of model compounds: isotactic and syndiotactic dimers of cyclopentene carbonate unit. By comparing the signals in the carbonyl region, we concluded that the signals at 153.85 and 153.78 ppm in the C-13 NMR spectrum of poly(cydopentene carbonate) were attributed to m-diad and r-diad, respectively. The signals at 82.61 and 82.53 ppm in the C-13 NMR spectrum were assigned to m-diad and r-diad peak of methine resonance, respectively. It was found that the carbonate carbon signals were sensitive toward the stereocenters on adjacent epoxide ring-opening units. The syndiotactic and isotactic diads matched well with the microstructures of the stereoregular poly(cydopentene carbonate)s that were prepared by using chiral dinuclear Co(III) complex catalysts.