染料包覆胶态银纳米粒子掺杂的有机复合膜的制备与光吸收特性

材料科学与工程学报, 2004, 22(2): 168-171. doi: 10.3969/j.issn.1673-2812.2004.02.004

染料包覆胶态银纳米粒子掺杂的有机复合膜的制备与光吸收特性

李贵安 ^1, , 宋建平 ^2, , 边小兵 ^3, , 李发荣 ^4, , 任耀辉 ^5, , 李貅 ^6, , 李永放 ^7, , 刘鹏 ^8,

1.西安交通大学电子与信息工程学院,陕西,西安,710049;陕西师范大学,陕西,西安,710062

2.西安交通大学电子与信息工程学院,陕西,西安,710049

3.陕西师范大学,陕西,西安,710062

4.陕西师范大学,陕西,西安,710062

5.陕西师范大学,陕西,西安,710062

6.西安交通大学电子与信息工程学院,陕西,西安,710049

7.陕西师范大学,陕西,西安,710062

8.陕西师范大学,陕西,西安,710062

基金项目: 国家自然科学基金(50271038) 陕西师范大学校科研和教改项目(2003)

关键词：胶体分散系 , 银纳米粒子 , 染料包覆 , 掺杂 , 有机复合膜 , 光吸收

Preparation and Optical Absorption Properties of Organic Composite Films Doped with Colloidal Silver Nanoparticles Coated by Dys Molecules

为避免传统的湿化学法制备纳米掺杂复合材料中热处理给材料性能带来的负面影响,提出了一种简易可行的工艺方法:通过胶体化学法制备出稳定的胶态银纳米粒子分散系,以它为纳米粒子来源,使有机染料罗丹名6G(R6G)分子包覆到银纳米胶粒表面,将该胶体分散系均匀掺杂到明胶溶液中,制备出染料包覆胶态银纳米粒子掺杂的有机复合膜.本工作成功地制备出无机/有机活性基元掺杂的三元系复合膜,实现了染料分子对金属纳米粒子完全意义上包覆的设想和对活性基元的室温包埋工艺.电镜(TEM)观测了复合膜的显微结构,对复合膜的UV-Vis吸收光谱进行了测量.给出了一种包覆掺杂的结构模型,并用该模型成功地解释了实验结果.

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