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Preparation and Fluorescence Properties of Co-doped Nanocomposite Film Based on Supra Molecular Structure
Gui-an Li*1,2, Xiu Li1, Jian-ping Song1, Fa-rong Li1, Shao-hua Ma2, Yu-rong Zhang2, Xiao-ling Fang2
1.School of Electronics and Information Engineering, Xi'an Jiaotong University, Xi'an 710049, China;2.School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, China
Abstract:
A novel materials design procedure based on the co-doping of metal nanoparticle and azo dye compound (MNPADC) is developed to improve the properties of functional molecules. The synthesized materials were characterized by transmission electron micrograph (TEM), ultraviolet-visible absorption spectra (UV-Vis) and fluorescence spectra (FS). It was found that the fluorescence intensity of methyl orange (MO) was enhanced by 5 times in the aqueous composite system doped with silver nanoparticles whereas it was reduced by 15% and 20% in composite films with co-mixing and coating structures, respectively. The results indicate that the properties of functional molecules can be greatly improved in composite film with supra molecular structure and that the procedure presented here is effective.
Key words:  Supra molecular structure, Nanocomposite film, Silver nanoparticles, Methyl orange, Fluorescence properties
FundProject:
基于超分子结构共掺杂纳米复合薄膜的制备与荧光特性
李贵安*1,2, 李貅1, 宋建平1, 李发荣1, 马少华2, 张玉荣2, 方晓玲2
1.西安交通大学电子与信息工程学院,西安,710049;2.陕西师范大学物理学与信息技术学院,西安,710062
摘要:
为改善功能分子的特性,提出一种基于金属纳米粒子-偶氮染料复合物共掺杂超分子结构功能材料的设计新方法.并依照此方法制备出复合材料,观测了其显微结构,测量了其紫外-可见光吸收,研究了该超分子结构复合体系的荧光特性.实验发现,由于金属银纳米粒子的掺杂,使得超分子结构复合体系中功能分子甲基橙在溶液态体系的荧光强度增强近5倍,而在两种不同结构(共混结构和包覆结构)的薄膜态超分子结构体系中,其荧光强度分别被猝灭15%和20%.研究结果表明,复合膜中采用超分子结构完全能够改善功能分子的特性.
关键词:  超分子结构  纳米复合薄膜  银纳米粒子  荧光特性
DOI:10.1360/cjcp2006.19(2).183.4
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