Institut für Experimentelle und Angewandte Physik, Christian-Albrechts-Universität zu Kiel, Leibnizstraße 19, 24118 Kiel, Germany.
Langmuir. 2013 Aug 27;29(34):10693-9. doi: 10.1021/la401825f. Epub 2013 Aug 14.
Localized plasmon resonance (LSPR) spectroscopy, employing gold nanodisk substrates, is applied for studies of photoswitching in self-assembled monolayers of azobenzene-containing thiols. By choosing customized samples in which the sharp LSPR resonance is well separated from the spectral regime of the molecular absorption bands, the photoisomerization kinetics of the adlayer can be monitored in real time. Quantitative data on the photoinduced trans-cis and cis-trans isomerization processes in inert gas atmosphere were obtained as a function of irradiation intensity and temperature, demonstrating the high sensitivity of this technique to such processes in functional adlayers.
基于金纳米盘基底的局域表面等离子体共振（LSPR）光谱学被应用于研究含偶氮苯硫醇的自组装单层中的光致开关现象。通过选择定制的样品，其中尖锐的 LSPR 共振与分子吸收带的光谱范围很好地分离，可以实时监测吸附层的光致异构化动力学。在惰性气体气氛中，定量获得了光诱导反式-顺式和顺式-反式异构化过程的数据，作为辐照强度和温度的函数，证明了该技术在功能吸附层中对这些过程的高灵敏度。
