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Chemical preparation and characterization of new biodegradable aliphatic polyesters end-capped with diverse steroidal moieties ring-opening polymerization
其他题名多种胆甾封端的生物降解性脂肪族聚酯的合成与表征
Yang J(杨晶); Li QB(李巧波); Li Y(李洋); Jia L(贾林); Fang Q(房强); Cao AM(曹阿民)
2006
发表期刊J. Polym. Sci. Pol. Chem.
ISSN0887-624X
卷号44期号:6页码:2045-2058
摘要Novel metal complexes with a single catalytic site and less transesterification seem to provide alternative efficient synthetic approaches to preparing new biodegradable and biologically responsive materials with well-defined structures. In this study, we rationally designed a new category of aluminum metal complexes bearing a bulky Salen ligand and diverse steroidal alkoxy moieties to synthesize novel biodegradable aliphatic polyesters end-capped with steroidal building blocks. At first, three new aluminum metal complexes (9-11) were synthesized with good yields of 80-90%, bearing cholesterol and diosgenin derivatives as functional alkoxy moieties. By means of nuclear magnetic resonance (NMR) spectrometry, matrix-assisted laser desorption/ionization Fourier transform mass spectrometry (MALDI-FTMS), and Fourier transform infrared spectrometry, the molecular structures of 9-11 were characterized. Furthermore, new biodegradable aliphatic polyesters, poly(epsilon-caprolactone) and poly(delta-valerolactone) end-capped with diverse steroidal moieties, were synthesized through the ring-opening polymerization of epsilon-caprolactone and delta-valerolactone catalyzed by these new metal complexes under 100 degrees C in toluene, and they were also characterized by gel permeation chromatography, NMR, MALDI-FTMS, differential scanning calorimetry, and thermogravimetric analysis. Very narrow molecular weight distributions were revealed for these new polymer products, and their thermal crystallization and stability strongly depended on the degree of polymerization of the polyester building blocks and the distinct steroidal moieties. Because of the nature of the steroidal moieties, these biodegradable polymers may pave a path to new possibilities as potential biomaterials. (c) 2006 Wiley Periodicals, Inc.
学科领域高分子化学
部门归属中科院上海有机所
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收录类别SCI
语种英语
文献类型期刊论文
条目标识符http://ir.sioc.ac.cn/handle/331003/22920
专题高分子材料研究室
通讯作者Cao AM(曹阿民)
推荐引用方式
GB/T 7714
Yang J,Li QB,Li Y,et al. Chemical preparation and characterization of new biodegradable aliphatic polyesters end-capped with diverse steroidal moieties ring-opening polymerization[J]. J. Polym. Sci. Pol. Chem.,2006,44(6):2045-2058.
APA 杨晶,李巧波,李洋,贾林,房强,&曹阿民.(2006).Chemical preparation and characterization of new biodegradable aliphatic polyesters end-capped with diverse steroidal moieties ring-opening polymerization.J. Polym. Sci. Pol. Chem.,44(6),2045-2058.
MLA 杨晶,et al."Chemical preparation and characterization of new biodegradable aliphatic polyesters end-capped with diverse steroidal moieties ring-opening polymerization".J. Polym. Sci. Pol. Chem. 44.6(2006):2045-2058.
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