阳离子化水杨醛类席夫碱/Zn^(2+)配合物-聚合物荧光胶束制备  

Synthesis of cationic fluorescent micelles based on salicylidene Schiff base/Zn^(2+) complexes-polymer

作　　者：何强芳[1] 王红明[1] 江涛[1] 吴映红[1] 苏惠玲[1] 钟奕玲 

机构地区：[1]广东第二师范学院化学系,广东广州510303

出　　处：《应用化工》2016年第9期1711-1715,共5页Applied Chemical Industry

基　　金：广东省自然科学基金(2015A030310228);广东第二师范学院博士专项(2013ARF06);广东第二师范学院大学生创新训练计划资助项目(1427815052)

摘　　要：将两亲性β-环糊精(β-CD)接枝水杨醛类席夫碱聚合物(PHVB-graft-β-CD)在DMF/水(体积比4∶1)中进行自组装,形成内核含有水杨醛席夫碱配体、外壳含有β-CD基团的聚合物胶束(20 mg/m L);水杨醛席夫碱配体与Zn(OAc)2进行配位反应,同时实现胶束内核的交联固定化和荧光功能化;除去溶剂,干燥,将聚合物胶束分散于纯水中(1 mg/m L),利用β-CD基团与客体金刚烷胺盐酸盐(ADA)间的主-客体包络作用,对外壳进行阳离子化修饰。通过UV-Vis、FLL、DLS和TEM分别对聚合物胶束的合成进行了跟踪和表征。结果表明,通过利用金属-配体配位作用和主-客体包络作用,分别对聚合物胶束的内核和外壳进行适当的功能化和修饰,可以获得结构稳定、粒径大小约为47 nm的水分散性阳离子化荧光聚合物胶束纳米粒子。A well-defined β-CD-containing polymeric salicylidene Schiff base PHVB-graft-β-CD could be self-assemble into nanosized micelles（ 20 mg / m L） in a solvent mixture of DMF / H2O（ volume ration of4∶ 1） with salicylidene Schiff base ligands in the core and β-CD side groups on the shell. Then,the formed micelles were used as nanoreactors to complex with zinc acetate to yield luminescent micelles with ionic cross-linking cores containing salicylidene Schiff base / Zn^2＋ complex. The incorporation of salicylaldimine Zn^2＋ coordination into the formed polymer micelles not only endowed the micelles with fluorescent feature but also enabled the resulting luminescent micelles to be stabilized through ionic cross-linking in consequence of the salicylaldimine-Zn^2＋ coordination in the core of the micelles. After drying to remove solvent,the resultant Zn^2＋ cross-linked coordinated micelles could be re-dispersed readily in water to form a micellar solution（ 1. 0 mg / m L）,and then the shell of as-synthesized micelles was decorated with ammonium groups via the host-guest inclusion of β-CD moieties with 1-adamantanamine（ ADA）. The luminescence properties and form of the obtained micelles was investigated by UV-Vis spectra（ UV-Vis）,fluorescence spectra（ FLL）,dynamic light scattering（ DLS）,transmission electron microscopy（ TEM）. The results showed that a water-dispersible fluorescent micelle based on salicylidene Schiff base / Zn^2＋ complexes could be obtained with ionic-cross-linked-stabilized structure and aggregate size around 47 nm,which was cross-linked with metal-ligand coordination in the core and incorporated of ammonium groups on the shell via the host-guest inclusion of β-CD moieties with 1-adamantanamine（ ADA）.

关 键 词：水杨醛席夫碱/Zn^2+配合物-聚合物 荧光胶束 主-客体包络作用 

分 类 号：TQ617.3[化学工程—精细化工] O631[理学—高分子化学]