Microstructure Analysis of Poly(cyclopentene carbonate)s at the Diad Level
Release time:2019-03-09
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First Author:
Liu, Ye
Correspondence Author:
Lu, XB (reprint author), Dalian Univ Technol, State Key Lab Fine Chem, Dalian 116024, Peoples R China.
Co-author:
Li, Rong-Rong,Lu, Xiao-Bing
Date of Publication:
2015-10-13
Journal:
MACROMOLECULES
Included Journals:
SCIE、EI、Scopus
Document Type:
J
Volume:
48
Issue:
19
Page Number:
6941-6947
ISSN No.:
0024-9297
Abstract:
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.
Translation or Not:
no
