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首页> 外文会议>American Chemical Society >Factors Determining the Performance of Copper-Based Atom Transfer Radical Polymerization Catalysts and Criteria for Rational Catalyst Selection
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Factors Determining the Performance of Copper-Based Atom Transfer Radical Polymerization Catalysts and Criteria for Rational Catalyst Selection

机译：确定铜基原子转移自由基聚合催化剂性能的因素及合理催化剂选择的标准

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The performance of copper-based ATRP catalysts can be predicted based on the stability constants of the CuII and CuI complexes with the ligand L (p" and p1, respectively). Both p" and p1 should be large in order to prevent catalyst deactivation through competitive coordination of monomer and/or polymer. A high p'Vp1 ratio is required for high catalytic activity. Catalysts for which the Cu11 complex is more halogenophilic are more active, and provide better polymerization control due to the less pronounced deactivator dissociation. If ATRP is carried out in aqueous media, in addition to the above requirements, the ratio 0n/(P')2[L] should be low to prevent disproportionation of the Cu1 complex. Acidic monomers may be polymerized if the ligands meet all outlined requirements and are also as weakly basic as possible.
机译：可以基于CuII和Cui复合物的稳定性常数，分别与配体L（p“和P1）的稳定性常数来预测铜基ATRP催化剂的性能。P”和P1应该很大，以防止催化剂失活单体和/或聚合物的竞争协调。高催化活性需要高p'VP1比率。 Cu11复合物更具卤素的催化剂更活跃，并且由于不太明显的去激活剂解离，提供更好的聚合对照。如果在含水介质中进行ATRP，除了上述要求外，除了上述要求之外，比例0n /（p'）2 [1]应低，以防止Cu1复合物的歧化。如果配体满足所有概述的要求，则可以将酸性单体聚合，并且也尽可能弱。

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