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Preparation and optical properties of ZnO@PPEGMA nanoparticles

机译：ZnO @ PPEGMA纳米粒子的制备及光学性质

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摘要

The poly(poly(ethylene glycol) methyl ether monomethacrylate) (PPEGMA) grafted zinc oxide (ZnO) nanoparticles were successfully prepared via the surface-initiated atom transfer radical polymerizations (ATRP) from the surfaces functionalized ZnO nanoparticles. The 2-bromoisobutyrate (BIB) was immobilized onto the surface of the ZnO nanoparticles through the reaction between 2-bromoisobutyryl bromide (BIBB) and the hydroxyl groups on nanoparticles, serving as the initiator to induce the ATRP of poly(ethylene glycol) monomethacrylate (PEGMA). Well-defined polymer chains were grown from the surfaces to yield hybrid nanoparticles comprised of ZnO cores and PPEGMA polymer shells having multifunctional end groups. The structure and morphology of the nanoparticles were characterized using Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), thermogravimetric analysis (TGA), X-ray diffraction (XRD) and transmission electron microscopy (TEM). The optical properties of the nanoparticles were investigated by UV-vis absorption spectroscopy and photoluminescence spectroscopy (PL). The results showed that the dispersion and near-band edge (NBE) emission of ZnO nanoparticles could be improved by the grafted PPEGMA polymer segments.
机译：从表面官能化的ZnO纳米粒子通过表面引发的原子转移自由基聚合（ATRP）成功地制备了聚（聚（乙二醇）甲基醚单甲基丙烯酸甲酯）（PPEGMA）接枝的氧化锌（ZnO）纳米粒子。通过2-溴异丁酰溴（BIBB）和纳米颗粒上的羟基之间的反应将2-溴异丁酸酯（BIB）固定在ZnO纳米颗粒的表面上，用作引发剂以诱导聚乙二醇单甲基丙烯酸（ATG）的ATRP（ PEGMA）。从表面生长出轮廓分明的聚合物链，以产生由ZnO核和具有多功能端基的PPEGMA聚合物壳组成的杂化纳米颗粒。使用傅立叶变换红外光谱（FTIR），X射线光电子能谱（XPS），热重分析（TGA），X射线衍射（XRD）和透射电子显微镜（TEM）表征了纳米颗粒的结构和形态。通过紫外可见吸收光谱法和光致发光光谱法（PL）研究了纳米颗粒的光学性质。结果表明，通过接枝PPEGMA聚合物链段可以改善ZnO纳米粒子的分散性和近带边缘（NBE）发射。

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  • 来源
    《Applied Surface Science》 |2009年第16期|7158-7163|共6页
  • 作者

    Xiaoming Peng; Yiwang Chen; Fan Li; Weihua Zhou; Yuehui Hu;

  • 作者单位

    Department of Chemistry, Nanchang University, Xuefu Road 999, Nanchang 330031, China Institute of Polymers/Institute for Advanced Study, Nanchang University, Xuefu Road 999, Nanchang 330031, China;

    Department of Chemistry, Nanchang University, Xuefu Road 999, Nanchang 330031, China Institute of Polymers/Institute for Advanced Study, Nanchang University, Xuefu Road 999, Nanchang 330031, China;

    Institute of Polymers/Institute for Advanced Study, Nanchang University, Xuefu Road 999, Nanchang 330031, China;

    Institute of Polymers/Institute for Advanced Study, Nanchang University, Xuefu Road 999, Nanchang 330031, China;

    College of Mechanical and Electronic Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333001, China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    ZnO; nanoparticles; surface modification; PEGMA; ATRP;

    机译：氧化锌;纳米粒子表面改性;聚乙二醇;空中交通管制;

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