| 纳米银对表面吸附甲基橙分子的光谱学性质的影响 |
| Effect of Silver Nanoparticles on Spectroscopy Properties of Methyl Orange |
|
| 摘要: 甲基橙溶液中引入纳米银胶，甲基橙分子的π-π*和n-π*电子跃迁吸收蓝移。随着纳米银胶浓度增加，S2-S0跃迁荧光发射强度不断下降，发射峰红移，而S1-S0跃迁荧光发射强度不断增加。纳米银对pH=2.1的甲基橙溶液的S1-S0跃迁荧光发射强度增强高于pH=6的甲基橙溶液。采用透射电子显微镜、紫外-可见吸收分光光度计和荧光分光光度计等手段从局域场增强、分子间的相互作用和能量传输等方面初步探讨了纳米银胶对表面吸附甲基橙分子光谱学性质影响机制。 |
| 关键词: 纳米银 甲基橙 局域场增强 能量传输 |
| 基金项目: |
| Abstract: Absorption bands of electronic transitions of π-π* and n-π* are blue-shifted after the addition of silver colloid. The intensity of fluorescence caused by S2-S0 electronic transition and S1-S0 electronic transition is quenched and enhanced, respectively, and the effect increases with the increasing of silver colloid concentration. The enhancement of fluorescence of methyl orange with pH value of 2.1 adsorbed on silver colloid is higher than that of pH value of 6.4. The effect of silver colloid on the fluorescent properties of the methyl orange solution is discussed in terms of the local field enhancement and the action among silver nanoparticles and methyl orange and energy transfer investigated by transmission electron microscopy and UV-Visible spectroscopy and spectrofluorophotometer. |
| Keywords: silver nanoparticle methyl orange local field enhancement energy transfer |
| |
| 摘要点击次数: 1560 |
| 全文下载次数: 2840 |
| 王悦辉,朱一水,朱朔萱.纳米银对表面吸附甲基橙分子的光谱学性质的影响[J].无机化学学报,2010,26(8):1415-1420. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| Support information: |
|
|
|
|
|
|
