Living Radical Polymerization via Organic Superbase Catalysis

Polymers

Lin Lei²  Miho Tanishima²  Atsushi Goto¹ 

[1] Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan;

关键词: organic superbases;    organic catalysts;    living radical polymerization;    reversible complexation mediated polymerization;    radical chemistry;    alkyl iodide;   

DOI  :  10.3390/polym6030860

来源: mdpi

【 摘 要 】

Organic superbases reacted with alkyl iodides (R–I) to reversibly generate the corresponding alkyl radicals (R^•). Via this reaction, organic superbases were utilized as new and highly efficient organic catalysts in living radical polymerization. The superbase catalysts included guanidines, aminophosphines and phosphazenes. Low-polydispersity polymers (M_w/M_n = 1.1–1.4) were obtained up to high conversions (e.g., 80%) in reasonably short times (3–12 h) at mild temperatures (60–80 °C) for methyl methacrylate, styrene and several functional methacrylates. The high polymerization rate and good monomer versatility are attractive features of these superbase catalysts.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.