含芴星形聚合物的合成与包合  

Synthesis and Inclusion of Star Polymer Containing Polyfluorene

作　　者：张雪梅[1] 邓超[1] 凌君[1] 

机构地区：[1]教育部高分子合成与功能构造重点实验室,浙江大学高分子科学与工程学系,浙江杭州310027

出　　处：《材料科学与工程学报》2014年第3期353-357,共5页Journal of Materials Science and Engineering

基　　金：国家自然科学基金资助项目(21374093)

摘　　要：本文合成了苯乙烯基-p-聚(9,9-二己基芴)(PFS)大单体,以β-环糊精(β-CD)为核,通过ATRP方法将PFS单体与甲基丙烯酸-N,N-二甲氨基乙酯(DMAEMA)无规共聚,得到了星形发光聚合物β-CD-g-P(PFS-r-DMAEMA)21,通过氢核磁共振谱和凝胶渗透色谱对其结构进行了表征,并将其用于包合客体分子苝,通过紫外-荧光测试表征了主客体分子的包合性能,发现了聚合物与客体分子间的能量传递现象,通过计算机分峰拟合得到两者各自的发光比。In this work,a 21-armed star copolymer ofβ-CD-g-P(PFS-r-DMAEMA)21was synthesized using controlled atom transfer radical polymerization(ATRP).In this process,vinyl macromonomer p-(poly(9,9-dihexylfluorene-2,7-diyl)styrene(PFS)was polymerized with N,N-dimethylaminoethyl methacrylate(DMAEMA)grafting from aβ-cyclodextrin core.The star polymer was first characterized by 1 H NMR and SEC,and then used to enclose perylene,aguest molecule.UV-Vis absorption and photoluminescent properties were studied to demonstrate the inclusion-induced energy transfer between the polymer and perylene.In aqueous solution,fluorescent emission of perylene was observed,demonstrating Frster resonance energy transfer between PFS units in the host polymer and the guest molecule.It serves as an evidence of a successful inclusion of perylene inβ-CD core.Computer fitting was used to analyze the fluorescent intensities of PFS and perylene.

关 键 词：PFS单体 Β-环糊精 包合 能量传递 

分 类 号：TQ317[化学工程—高聚物工业]