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Comprehensive Understanding of Polyester Stereocomplexation

文献类型：期刊论文

作者Wan, Zhao-Qan2; Longo, Julie M.1; Liang, Li-Xin3; Chen, Hong-Yu3; Hou, Guang-Jin3; Yang, Shuai2; Zhang, Wei-Ping2; Coates, Geoffrey W.1; Lu, Xiao-Bing2
刊名JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
出版日期2019-09-18
卷号141期号:37页码:14780-14787
ISSN号0002-7863
DOI10.1021/jacs.9b07058
通讯作者Coates, Geoffrey W.(coates@cornell.edu) ; Lu, Xiao-Bing(xblu@dlut.edu.cn)
英文摘要We report a comprehensive understanding of the stereoselective interaction between two opposite enantiomeric polyesters prepared from the regioselective copolymerization of chiral terminal epoxides and cyclic anhydrides. For many of the resultant polyesters, the interactions between polymer chains of opposite chirality are stronger than those of polymer chains with the same chirality, resulting in the formation of a stereocomplex with an enhanced melting point (T-m) and crystallinity. The backbone, tacticity, steric hindrance of the pendant group, and molecular weight of the polyesters have significant effects on stereocomplex formation. Bulky substituent groups favor stereocomplexation, resulting in a greater rise in T-m in comparison to the component enantiomeric polymers. The stereocomplex assembly of discrete (R)- and (S)-poly(phenyl glycidyl ether-alt-phthalic anhydride)s oligomers revealed that the minimum degree of polymerization required for stereocomplex formation is five. Raman spectroscopy and solid-state NMR studies indicate that stereocomplex formation significantly restricts the local mobilities of C=Oand C-H groups along the backbone of chains. The reduced mobility results in the enhanced spin-lattice relaxation time and both H-1 and C-13 downfield shifts due to the strong intermolecular interactions between R- and S-chains.
WOS关键词RING-OPENING COPOLYMERIZATION ; STEREOREGULAR CO2 COPOLYMERS ; CYCLIC ANHYDRIDES ; POLY(L-LACTIDE)/POLY(D-LACTIDE) STEREOCOMPLEX ; ALTERNATING COPOLYMERIZATION ; METAL-COMPLEXES ; CARBON-DIOXIDE ; MESO-EPOXIDES ; CATALYSTS ; CRYSTALLIZATION
资助项目National Natural Science Foundation of China (NSFC)[21690073] ; NSFC Projects of International Cooperation and Exchange[21920102006] ; Center for Sustainable Polymers, an NSF Center for Chemical Innovation[CHE-1413862]
WOS研究方向Chemistry
语种英语
WOS记录号WOS:000487180200043
出版者AMER CHEMICAL SOC
资助机构National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; NSFC Projects of International Cooperation and Exchange ; NSFC Projects of International Cooperation and Exchange ; Center for Sustainable Polymers, an NSF Center for Chemical Innovation ; Center for Sustainable Polymers, an NSF Center for Chemical Innovation ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; NSFC Projects of International Cooperation and Exchange ; NSFC Projects of International Cooperation and Exchange ; Center for Sustainable Polymers, an NSF Center for Chemical Innovation ; Center for Sustainable Polymers, an NSF Center for Chemical Innovation ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; NSFC Projects of International Cooperation and Exchange ; NSFC Projects of International Cooperation and Exchange ; Center for Sustainable Polymers, an NSF Center for Chemical Innovation ; Center for Sustainable Polymers, an NSF Center for Chemical Innovation ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; NSFC Projects of International Cooperation and Exchange ; NSFC Projects of International Cooperation and Exchange ; Center for Sustainable Polymers, an NSF Center for Chemical Innovation ; Center for Sustainable Polymers, an NSF Center for Chemical Innovation
源URL[http://cas-ir.dicp.ac.cn/handle/321008/172547]  
专题大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者Coates, Geoffrey W.; Lu, Xiao-Bing
作者单位1.Cornell Univ, Dept Chem & Chem Biol, Baker Lab, Ithaca, NY 14853 USA
2.Dalian Univ Technol, State Key Lab Fine Chem, Dalian 116024, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
推荐引用方式
GB/T 7714		 Wan, Zhao-Qan,Longo, Julie M.,Liang, Li-Xin,et al. Comprehensive Understanding of Polyester Stereocomplexation[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,2019,141(37):14780-14787.
APA Wan, Zhao-Qan.,Longo, Julie M..,Liang, Li-Xin.,Chen, Hong-Yu.,Hou, Guang-Jin.,...&Lu, Xiao-Bing.(2019).Comprehensive Understanding of Polyester Stereocomplexation.JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,141(37),14780-14787.
MLA Wan, Zhao-Qan,et al."Comprehensive Understanding of Polyester Stereocomplexation".JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 141.37(2019):14780-14787.

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来源：大连化学物理研究所

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