Electrochemical oxidation is described as a very efficient polymerization procedure for the heterogenization of metallic chiral catalysts. From chromium chiral complexes based on salenâthiophene ligands, this methodology provided an efficient access to various polymers. Recovered as insoluble powders, these materials were tested in different enantioselective heterogeneous catalytic reactions. Structural modifications were introduced on the salen core in order to evaluate their influence on redox polymer properties and on the enantioselectivity of the catalysis. Electrochemical experiments showed the particular stability of these deposited materials at the electrode surface and SEM analyses suggested the influence of the electropolymerization conditions on their morphology.
电
化学氧化被描述为一种非常高效的聚合过程,用于
金属手性催化剂的杂化化。基于salen-
噻吩配体的
铬手性复合物,这种方法有效地获取了各种聚合物。回收的这些不溶性粉末材料在不同的外消旋选择性不均相催化反应中进行了测试。对salen核心进行了结构改造,以评估它们对氧化还原聚合物特性以及催化的外消旋选择性的影响。电
化学实验显示,这些沉积材料在电极表面的特定稳定性,
SEM分析表明电聚合条件对其形态的影响。