Tailor-Made Poly(vinylamine) via Purple LED-Activated RAFT Polymerization of N-vinylformamide,Macromolecular Rapid Communications

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Tailor-Made Poly(vinylamine) via Purple LED-Activated RAFT Polymerization of N-vinylformamide
Macromolecular Rapid Communications ( IF 4.2 ) Pub Date : 2022-11-28 , DOI: 10.1002/marc.202200729
Izabela Kurowska _{1,

2,

3} , Alexis Dupre-Demorsy _{1,

4} , Stéphane Balayssac ₁ , Marie Hennetier ₅ , Audrey Ric ₅ , Valérie Bourdon ₆ , Tsuyoshi Ando ₄ , Hiroharu Ajiro ₄ , Olivier Coutelier ₁ , Mathias Destarac ₁

Affiliation

Photo-iniferter reversible addition-fragmentation chain transfer (PI-RAFT) polymerization of N-vinylformamide (NVF) is demonstrated by using purple light. PNVFs with predetermined molar masses and narrow molar mass distributions are obtained. High RAFT chain-end fidelity is confirmed by matrix-assisted laser desorption ionization time-of-flight (MALDI-TOF) and electrospray-ionization time-of-flight mass spectrometry (ESI-TOF-MS), and chain extension experiment. To demonstrate the potential of this approach, an original poly(N-vinylpyrrolidone)-b-poly(N-vinylformamide) (PVP-b-PNVF) diblock copolymer is synthesized and characterized by aqueous size-exclusion chromatography (SEC), asymmetric flow field-flow fractionation (A4F), and ¹H diffusion-ordered spectroscopy nuclear magnetic resonance (¹H DOSY NMR). Finally, selective hydrolysis of PNVF block to corresponding pH-responsive poly(N-vinylpyrrolidone)-b-poly(N-vinylformamide) (PVP-b-PVAm) is performed.

中文翻译：

通过紫色 LED 激活的 N-乙烯基甲酰胺的 RAFT 聚合定制聚（乙烯基胺）

N-乙烯基甲酰胺 (NVF)的光引发剂可逆加成断裂链转移 (PI-RAFT) 聚合通过使用紫光进行演示。获得具有预定摩尔质量和窄摩尔质量分布的 PNVF。高 RAFT 链端保真度通过基质辅助激光解吸电离飞行时间 (MALDI-TOF) 和电喷雾电离飞行时间质谱 (ESI-TOF-MS) 以及扩链实验得到证实。为了证明这种方法的潜力，原始的聚（N-乙烯基吡咯烷酮）-b-聚（N-乙烯基甲酰胺）（PVP- b-PNVF) 二嵌段共聚物被合成并通过水性尺寸排阻色谱 (SEC)、不对称流场-流动分级 (A4F) 和¹ H 扩散有序光谱核磁共振 ( ¹ H DOSY NMR) 进行表征。最后，将PNVF 块选择性水解为相应的 pH 响应聚（N-乙烯基吡咯烷酮）-b-聚（N-乙烯基甲酰胺）（PVP- b -PVAm）。

更新日期：2022-11-28

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