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Macrochain Transfer Agents for Catalytic Ring-Opening Metathesis Polymerization
ACS Macro Letters ( IF 5.1 ) Pub Date : 2022-12-01 , DOI: 10.1021/acsmacrolett.2c00684 Indradip Mandal 1 , Ankita Mandal 1 , Andreas F M Kilbinger 1
ACS Macro Letters ( IF 5.1 ) Pub Date : 2022-12-01 , DOI: 10.1021/acsmacrolett.2c00684 Indradip Mandal 1 , Ankita Mandal 1 , Andreas F M Kilbinger 1
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A monosubstituted 1,3-diene derivative attached to a polymer is demonstrated to act as a macrochain transfer agent in catalytic ring-opening metathesis polymerization. PEG- and PLA-based macrochain transfer agents were synthesized in a few steps and were characterized using NMR spectroscopy, size exclusion chromatography (SEC) and matrix-assisted laser desorption/ionization-time-of-flight (MALDI-ToF) mass spectrometry. Poly(l-lactide) based diblock copolymer, poly(ethylene glycol)-based diblock, and triblock (ABA type) copolymers of varied chain lengths were prepared catalytically in a one-pot approach via metathesis polymerization. Block copolymers were characterized by SEC and showed monomodal molecular weight distributions. Moreover, DOSY NMR spectroscopy further proved the block microstructures of the synthesized polymers.
中文翻译：
用于催化开环复分解聚合的大链转移剂
连接到聚合物的单取代 1,3-二烯衍生物被证明在催化开环复分解聚合中充当大链转移剂。基于 PEG 和 PLA 的大链转移剂通过几个步骤合成，并使用核磁共振光谱、尺寸排阻色谱 (SEC) 和基质辅助激光解吸/电离飞行时间 (MALDI-ToF) 质谱法进行表征。保利（升-丙交酯）基二嵌段共聚物、聚（乙二醇）基二嵌段和三嵌段（ABA 型）不同链长的共聚物通过易位聚合以一锅法催化制备。嵌段共聚物由 SEC 表征，并显示单峰分子量分布。此外，DOSY NMR 光谱进一步证明了合成聚合物的嵌段微观结构。
更新日期：2022-12-01
中文翻译：
用于催化开环复分解聚合的大链转移剂
连接到聚合物的单取代 1,3-二烯衍生物被证明在催化开环复分解聚合中充当大链转移剂。基于 PEG 和 PLA 的大链转移剂通过几个步骤合成，并使用核磁共振光谱、尺寸排阻色谱 (SEC) 和基质辅助激光解吸/电离飞行时间 (MALDI-ToF) 质谱法进行表征。保利（升-丙交酯）基二嵌段共聚物、聚（乙二醇）基二嵌段和三嵌段（ABA 型）不同链长的共聚物通过易位聚合以一锅法催化制备。嵌段共聚物由 SEC 表征，并显示单峰分子量分布。此外，DOSY NMR 光谱进一步证明了合成聚合物的嵌段微观结构。
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