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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Copper(0)-mediated reversible-deactivation radical polymerization ： ウィキペディア英語版 Copper(0)-mediated reversible-deactivation radical polymerization Copper(0)-mediated reversible-deactivation radical polymerization (Cu(0)-mediated RDRP) is a member of the class of reversible-deactivation radical polymerization. As the name implies, metallic copper is employed as the transition-metal catalyst for reversible activation/deactivation of the propagating chains responsible for uniform polymer chain growth. ==History of Copper-mediated RDRP== Although copper complexes (in combination with relevant ligands) have long been used as catalysts for organic reactions such as atom transfer radical addition (ATRA) and copper(I)-catalyzed alkyne-azide cycloaddition (CuAAC), copper complex catalyzed RDRP has not been reported until 1995 when Jin-Shan Wang and Krzysztof Matyjaszewski introduced it as atom transfer radical polymerization (ATRP). ATRP with copper as catalyst quickly became one of the most robust and commonly used RDRP techniques for designing and synthesizing polymers with well-defined composition, functionalities, and architecture. Due to some inherited drawbacks, such the persistent radical effect (PRE), several advanced ATRP techniques have been developed, including activators regenerated by electron transfer (ARGET) ATRP and initiators for continuous activator regeneration (ICAR) ATRP. One intriguing catalyst, metallic copper, has also been applied to these modified ATRP systems. The polymerization using Cu(0) and suitable ligands was introduced for the first time by Krzysztof Matyjaszewski in 1997. However, then, in 2006, the Cu(0) - mediated RDRP of MA (in combination with tris(2-(dimethylamino)ethyl)amine(Me6TREN) as ligand in polar solvents) was reported, with a very different mechanism, single electron transfer living radical polymerization (SET-LRP) postulated by Virgil Percec. Initiated by this mechanistic difference, many of research articles were published during the recent years aimed to shed a light on this specific polymerization reaction and the discussion of the mechanisms has been a very striking event in the field of polymer science. ==Discussion of the mechanism== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Copper(0)-mediated reversible-deactivation radical polymerization」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.