高等学校化学学报 ›› 2015, Vol. 36 ›› Issue (4): 619.doi: 10.7503/cjcu20140930

• 研究论文: 无机化学 • 上一篇    下一篇

氨基修饰碳点与酞菁锌复合结构的制备与性能

丁艳丽, 胡胜亮(), 常青   

  1. 中北大学材料科学与工程学院, 太原 030051
  • 收稿日期:2014-10-20 出版日期:2015-04-10 发布日期:2015-03-27
  • 作者简介:联系人简介: 胡胜亮, 男, 博士, 教授, 主要从事碳量子点及其应用研究. E-mail: hsliang@yeah.net
  • 基金资助:
    国家自然科学基金(批准号: 51172214)和山西省优秀青年科学基金(批准号: 2014021008)资助

Preparation and Characterization of Composites of Amine-functionalized Carbon Dots and Zinc Phthalocyaine

DING Yanli, HU Shengliang*(), CHANG Qing   

  1. School of Material Science and Engineering, North University of China, Taiyuan 030051, China
  • Received:2014-10-20 Online:2015-04-10 Published:2015-03-27
  • Contact: HU Shengliang E-mail:hsliang@yeah.net
  • Supported by:
    † Supported by the National Natural Science Foundation of China(No.51172214) and the Excellent Young Scientist Foundation of Shanxi Pro-vince, China(No.2014021008)

摘要:

通过混合氨基修饰碳点(N-CDs)与酞菁锌(PcZn)合成了静电结合的N-CDs/PcZn复合结构. 利用荧光光谱、 紫外-可见吸收光谱、 循环伏安测试和光催化活性表征证实了N-CDs的光激发电子通过界面转移到了PcZn分子上, 然后在PcZn上发生辐射复合, 导致PcZn的荧光发射增强. 由于N-CDs上的激发电子转移到了PcZn分子上, 促使了其与空穴的分离, 阻碍了N-CDs上的辐射复合发生, 因此提高了N-CDs/PcZn复合体系的光催化活性. 反应温度会影响N-CDs/PcZn复合体系的稳定性和光转换能力, 在常温下制备的N-CDs/PcZn复合结构具有最佳的光物理与化学性能.

关键词: 碳点, 酞菁锌, 电子转移, 荧光性能, 光催化性能

Abstract:

Amine-functionalized carbon dots(N-CDs) and zinc phthalocyaine(PcZn) were combined by electrostatic bonding under the mechanical stirring, resulting in a new composite, i.e. N-CDs/PcZn. The photoinduced excited electron transfer via the interface between N-CDs and PcZn was determined through fluorescence spectra, UV-Vis absorption spectra, infrared spectra and cyclic voltammetry. The excited electrons of N-CDS were transfered onto the PcZn molecules and then relaxed by radiative recombination, causing the enhanced fluorescence emission of PcZn. On the other hand, the separation of electron-hole pair on N-CDs was realized and thus limited the possibility of radiative combination on N-CDs. Therefore, the composite of N-CDs/PcZn showed a high photocatalytic activity. Moreover, the stability and the photon conversion ability of N-CDs/PcZn composites depended on the reaction temperature. The experimental results suggest that room temperature is the optimum to obtain composite with good performance.

Key words: Carbon dots, Zinc phthalocyaine, Electronic transfer, Fluorescent property, Photocatalytic property

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