A Versatile Monomer for Preparing Well-Defined Functional Polycarbonates and Poly(ester鈭抍arbonates)

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• 作者：Jianwen Xu ; Fioleda Prifti ; Jie Song
• 刊名：Macromolecules
• 出版年：2011
• 出版时间：April 26, 2011
• 年：2011
• 卷：44
• 期：8
• 页码：2660-2667
• 全文大小：1009K
• 年卷期：v.44,no.8(April 26, 2011)
• ISSN：1520-5835

文摘

Despite the increasing demands for functional degradable biomaterials, strategies for generating materials with modular compositions and well-defined functionalities from common building blocks are still lacking. Here we report an azido-functionalized cyclic carbonate monomer, AzDXO, that exhibited controlled/鈥渓iving鈥?ring-opening polymerization kinetics under the catalysis of 1,8-diazabicyclo[5.4.0]undec-7-ene. Homopolymerization of AzDXO and copolymerization of AzDXO with lactide resulted in polycarbonate and poly(ester鈭抍arbonates) with well-defined composition and narrow polydispersity. Further side-chain functionalizations of these polymers were accomplished under facile conditions via copper-catalyzed or copper-free strain-promoted azido鈭抋lkyne cyclcoaddition. This versatile monomer building block, obtainable in two steps without tedious purifications, provides a practical solution to the preparation of well-defined functional polycarbonates and poly(ester鈭抍arbonates).