纳米Fe_3O_4-聚吡咯的相互作用  

INTERACTION OF Fe_3O_4 NANOPARTICLES AND POLYPYRROLE

作　　者：邓建国[1] 贺传兰[1] 龙新平[1] 彭宇行[2] 李蓓[3] 陈兴滋[3] 

机构地区：[1]中国工程物理研究院化工材料研究所,四川绵阳621900 [2]中国科学院成都有机化学研究所,四川成都610041 [3]香港理工大学生物与分子工程系

出　　处：《高分子材料科学与工程》2004年第4期149-152,共4页Polymer Materials Science & Engineering

基　　金：香港理工大学ASD基金;中国工程物理研究院预研基金资助项目(20020863)

摘　　要：在合成了同时具有导电性和磁性能的Fe3O4-聚吡咯纳米微球的基础上,使用了光电子能谱(XPS)、IR、UV、TGA等手段研究了纳米Fe3O4-聚吡咯之间的相互作用及作用机理。结果表明,Fe3O4与聚吡咯基体间存在着一定的相互作用。Fe原子3d轨道的空轨道与N原子的孤对电子形成了配位键,正是这种配位键的形成提高了复合物的热稳定性。Magnetic and conducting Fe_3O_4-polypyrrole nanoparticles with core-shell structure have been prepared in the presence of Fe_3O_4 magnetic fluid in aqueous solution containing dodecylbenzene sulfonic acid sodium salt (NaBS) as a surfactant and dopant. Interaction and interactive mechanism between Fe_3O_4 nanoparticles and polypyrrole were studied by XPS, IR, UV and TG. The magnetic Fe_3O_4 nanoparticles can improve the thermal stability of Fe_3O_4-polypyrrole nanocomposites due to interaction between Fe_3O_4 particles and polypyrrole chains. The interaction between Fe and N, which mechanism may be the lonepair electrons of N atom in PPY chain interact with 3d orbit of Fe atom to form corm coordinate bond, which could reduce the energy level interval of pyrrole ring.

关 键 词：FE3O4 聚吡咯 相互作用 纳米微球 热稳定性 复合物 

分 类 号：TB383[一般工业技术—材料科学与工程] TB332