solution. 1–8 are active catalysts for the ring opening polymerization (ROP) of lactide (LA) in CH2Cl2 at ambient temperature and the catalytic activity is controlled by the electronic and steric properties of the OAr substituent, yielding polymers with high average molecular weight (Mn) and moderately controlled molecular weight distribution (MWDs). 1 and 5 showed a living polymerization character and kinetic
苯氧
锌络合物L 1 ZnOAr 1 – 4(L 1 = Me 2 NC 2 H 4 NC(Me)CHC(Me)O)和L 2 ZnOAr 5 – 8(L 2 = Me 2 NC 3 H 6 NC(Me) CHC(Me)中O)与供体-官能化β酮
亚胺酸盐
配体(L 1/2)和桨的取代基(AR =苯基1,5 ; 2,6-ME 2 -C 6 ħ 3 2,6 ; 3,5-我2- C6 ħ 3 3,7 ; 4-卜-C 6 H ^ 4 4,8)具有可调的电子和空间特性被合成和表征。1 – 8除5外呈固态的双核结构,而在CDCl 3溶液中则为单体。1 – 8是
丙交酯(
LA)在CH 2 Cl 2中的开环聚合(ROP)的活性催化剂在室温下,催化活性由OAr取代基的电子和空间位阻控制,从而得到具有高平均分子量(M n)和中等控制的分子量分布(MWD)的聚合物。1和5显示了活性聚合特性,对L –
LA的ROP进行的动力