Synthesis of Imidazolium Ionic Liquid/Styrene Random Copolymer and Its Nanocomposite with CdTe Quantum Dot

doi:10.3969/j.issn.0251-0790.2012.06.035

Abstract

Abstract: Side-chain imidazolium-functionalized random copolymer P(MMEIM⁺Cl^--co-St) was synthesized by free-radical copolymerization of 1-methyl-3-(2-methacryloyloxy ethyl) imidazolium chloride(MMEIM⁺Cl^-) and styrene(St) with azodiisobutyrounitrile(AIBN) as initiator. The structure of random copolymer was characterized by FTIR, ¹H NMR and GPC analyses. By the electrostatic interaction between positively charged imidazolium-functionalized P(MMEIM⁺Cl^--co-St) and the negatively charged aqueous CdTe quantum dots(QDs), fluorescent nanocrystal-polymer composites CdTe/P(MMEIM⁺Cl^--co-St) were prepared conveniently. UV-Vis absorption and photoluminescence(PL) spectra indicated the photochemical stability and strong fluorescent emission of CdTe/P(MMEIM⁺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.

Key words: Nanocomposite, Imidazole, Quantum dot, Fluorescence property

CLC Number:

O632.1

TrendMD:

LI Xue, NI Xu-Feng, LIANG Zhen-Hua, SHEN Zhi-Quan. Synthesis of Imidazolium Ionic Liquid/Styrene Random Copolymer and Its Nanocomposite with CdTe Quantum Dot[J]. Chem. J. Chinese Universities, 2012, 33(06): 1333.

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