Side-chain imidazolium-functionalized random copolymer P( MMEIM+Cr-co-St) was synthesized by free-radical copolymerization of l-methyl-3-(2-methacryloyloxy ethyl) imidazolium chloride(MMEIM+Cr) and styrene ( St) with azodiisobutyrounitrile ( AIBN ) as initiator. The structure of random copolymer was characterized by FTIR, ' H NMR and GPC analyses. By the electrostatic interaction between positively charged imidazolium-functionalized P( MMEIM+Cr-co-St) and the negatively charged aqueous CdTe quantum dots (QDs) , fluorescent nanocrystal-polymer composites CdTe/P( MMEIM+Cr-co-St) were prepared conveniently. UV-Vis absorption and photoluminescence(PL) spectra indicated the photochemical stability and strong fluorescent emission of CdTe/P( MMErM+Cl~-co-St) composites. The transmission electron microscopy( TEM) photograph shows that the CdTe QDs in composites are monodisperse, uniform and no significant surface deterioration or aggregation of the QDs occurred during the composite synthesis.%以偶氮二异丁腈(AIBN)为引发剂,通过自由基聚合制备了1-甲基-3-(2-甲基丙烯酰乙基)-咪唑氯离子液体和苯乙烯的无规共聚物P( MMEIM+Cl-co-St).用红外光谱、核磁共振氢谱和凝胶渗透色谱表征了共聚物的结构.共聚物的氯仿溶液与巯基乙酸稳定的CdTe量子点水溶液混合,通过静电相互作用复合组装,得到澄清透明且稳定的CdTe/P(MMEIM+Cl-co-St)纳米复合物的氯仿溶液.复合物的紫外吸收光谱、荧光发射光谱和透射电子显微镜的表征结果表明,量子点均匀分散于共聚物中,无团聚,且保持了量子点的荧光性能.
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