铽(Ⅲ)-噻吩甲酰三氟丙酮-电化学聚合漆酚配合物的研究  

Studies on the Tb(III)-Thienyltrifluroacetone-Electropolyurushiol

作　　者：唐洁渊[1] 肖荔人[1] 章文贡[1] 

机构地区：[1]福建师范大学高分子研究所,福州350007

出　　处：《化学学报》2002年第8期1490-1496,共7页Acta Chimica Sinica

基　　金：福建省自然科学重大基金 (No .2 0 0 1F0 0 5 );福建省教委资助项目

摘　　要：研究了铽 (Ⅲ )和噻吩甲酰三氟丙酮 (HTTA)形成的配合物与电化学聚合方法得到的聚合漆酚 (EPU)发生配位反应及pH =10 2时形成配合物Tb(III) TTA EPU的组分和结构 .红外光谱、X光电子能谱的测试表明Tb3+ 分别与EPU ,TTA- 发生配位 .元素分析和电感偶合等离子体发射光谱 (AES)测定结果证明了每个Tb3+ 分别与EPU分子中 1个链节单元的羟基和 3个TTA- 发生配位 ,从而得到配合物的结构 .动态机械热分析 (DMTA)表明发生配位反应后该配合物进一步交联 ,从而难溶于大部分有机溶剂 ,其玻璃化转变温度和耐热性能均得到很大提高 .我们对其荧光性质进行了研究 ,发现常温下配合物在紫外光下发出强的荧光 ,主要是Tb3+ 离子的5D4 →7F5的跃迁 .讨论了溶剂、pH值对配合物荧光强度的影响 .当pH =10 2时 ,合成的配合物有最好的荧光性质 .Coordination polymer (Tb(III) TTA EPU) was formed at pH=10 2 by reaction of EPU ( M w=3160) with metalorganic complex NaTb(TTA) 4 prepared from terbium chloride isopropyl alcohol solution and thienyltrifluroacetone. The coordination polymer was characterized by FT IR, XPS. Elemental analysis and AES indicate that each Tb 3+ ion is coordinated by three TTA - ions and two hydroxyls from one unit in the EPU molecule, making the coordination polymer cross linked further. The results of DMTA show that the title polymer is insoluble in most of organic solvents and has a high glass transition temperature and high thermal resistance. The coordination polymer shows intense fluorescence at 545 nm under UV excitation at room temperature, which is attributed to the 5D 4→ 7F 5 transition of Tb 3+ ions. The effects of solvents and pH on the fluorescence intensity were investigated. The fluorescence spectrum indicates that the coordination polymer has good fluorescence properties at pH=10 2.

关 键 词：铽(Ⅲ) 聚合漆酚 噻吩甲酰三氟丙酮 电化学聚合 配位聚合物 荧光光谱 聚合物发光材料 

分 类 号：TQ633[化学工程—精细化工]