两亲性含镉聚合物金属络合物的制备与表征

采用原子转移自由基聚合(ATRP)方法,制备聚苯乙烯(PS)接枝型引发剂,进而引发甲基丙烯酸丁酯(BMA)与丙烯酸镉(ACd)的共聚合,成功获得PS-g(BMA-co-ACd)接枝共聚物金属络合物。通过傅里叶变换红外吸收光谱、等离子体发射光谱、热重分析对共聚物的组成、结构和性能进行了分析。结果表明,聚合物金属络合物中镉含量测试值与理论值相近,其热稳定性随着镉金属含量的增加稍有降低;通过扫描电镜、透射电镜对聚合物金属络合物在水溶液中自组装形态进行分析,发现其在水溶液中自组装成球形结构的粒子,且稳定性较好;抑菌性测试表明其对大肠杆菌、枯草芽孢杆菌、金黄色葡萄球菌有较好的抑制作用。

STUDY ON SYNTHESIS AND RELAXIVITY OF PARAMAGNETIC POLYESTER METAL COMPLEXES FOR MRI

Fifteen new polyester ligands were prepared by copolymerndion Of EDTA(ethylenediaminetetraacetic acid ) dianhydride or DTPA (dikthylenetriaminepenlaacetic acid) dianhydrtde and dihydric alcohol or dihydric phenol. Theirparanzagnetic metal complexes were also synthesized. All polyester ligands andmetal complexes were characterized by IHNMR, IR spectra and elemental analyses. Preliminary study showed that the polyester .metal complexes had higher relaxation effectiveness as compared to corresponding small molecular metal complexes.