中华医学超声杂志

应用化学 ›› 2010, Vol. 27 ›› Issue (12): 1409-1412.DOI: 10.3724/SP.J.1095.2010.00126

• 研究论文 • 上一篇    下一篇

卟啉铜/CdSe纳米粒子复合膜的组装及其光学性能

李向清1,李凤2,康诗钊1,穆劲2   

  1. (1.上海应用技术学院化学与环境工程学院 上海 200235；2.华东理工大学化学与分子工程学院 上海)
  • 收稿日期:2010-03-04 修回日期:2010-04-16 出版日期:2010-12-10 发布日期:2010-12-10
  • 通讯作者: 康诗钊，男，教授; E-mail:kangsz@sit.edu.cn; 研究方向：纳米化学及无机固体化学
  • 基金资助:
    上海市教委重点学科项目资助(J51503)

Fabrication and Photoluminescence of the Composite Films Assembled from Meso-tetra-(4-trimethylaminophenyl)porphyrin Copper Iodide and CdSe Nanoparticles

LI Xiang-Qing1, LI Feng2, KANG Shi-Zhao1*, MU Jin2   

  1. (1.School of Chemical and Environmental Engineering,Shanghai Institute of Technology,Shanghai 200235;
    2.School of Chemistry and Molecular Engineering,East China University of Science and Technolog,Shanghai)
  • Received:2010-03-04 Revised:2010-04-16 Published:2010-12-10 Online:2010-12-10

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摘要：

采用静电自组装的方法，将带有相反电荷的水溶性卟啉——碘化三甲胺基苯基卟啉铜与CdSe纳米粒子交替沉积，制备了一种新型的有机-无机纳米复合薄膜。 紫外-可见吸收光谱表明，复合膜是逐层、均匀沉积的。 扫描电子显微镜照片显示复合膜中纳米粒子分布均匀，膜结构中缺陷少。 此外，还通过光谱手段系统地研究了该复合膜的发光性能、纳米粒子与卟啉之间的相互作用及膜的光稳定性。 研究结果发现，CdSe纳米粒子与CuTAPPI分子之间存在较强的相互作用，能产生由CuTAPPI到CdSe的光诱导电子转移。 而且，在该复合膜中CuTAPPI的光稳定性较高。

关键词: 卟啉, CdSe, 纳米粒子, 复合膜, 发光

Abstract:

Using the layer-by-layer deposition method, the CdSe-CuTAPPI composite films were obtained on quartz substrate with CdSe nanoparticles and meso-tetra-(4-trimethylaminophenyl) porphyrin copper iodide(CuTAPPI) molecules as assembly units based on electrostatic interactions. The structure, morphology and thickness of the films could well be controlled in a nanoscale. The result of UV-Vis spectra indicated that the consecutive adsorption is uniform and regular, and the nearly equal amount of CuTAPPI and CdSe nanoparticles was assembled into mulilayers in each deposition cycle. The SEM images displayed that the distribution of the nanoparticles in the composite films was uniform, and there was little defects in the films. The influences of aging in the air and irradiation under UV-light on the photoluminescence properties of the CdSe-CuTAPPI composite film were investigated by using fluorescence spectroscopy in detail. It was showed that there existed a stronger interaction between CdSe nanoparticles and CuTAPPI molecules. So the photo-induced electron transfer can be produced from CuTAPPI to CdSe. Furthermore, the photostability of CuTAPPI in the composite film was higher.

Key words: Porphyrin, CdSe, Nanoparticles, Composite films, Luminescence

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