Immobilization of polyynes adsorbed on Ag nanoparticle aggregates into poly(vinyl alcohol) films
Immobilization of polyynes adsorbed on Ag nanoparticle aggregates into poly(vinyl alcohol) films
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将吸附在银纳米粒子聚集体上的多炔固定到聚乙烯醇膜中
DOI：
10.1016/j.carbon.2011.06.074
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发表时间：
2011
期刊：
影响因子：
10.9
通讯作者：
and Shinji Hayashi
中科院分区：
文献类型：
--
作者：
Shu Okada;Minoru Fujii;and Shinji Hayashi
制备了含有吸附在银纳米颗粒聚集体上的多炔的聚乙烯醇复合膜，并通过测量吸收和表面增强拉曼光谱的时间演化研究了银聚集体和多炔的稳定性。结果表明，嵌入的银纳米粒子和吸附的聚炔的聚集体可以稳定一个月。复合膜的高稳定性使得获得表面增强拉曼光谱的激发剖面成为可能。基于表面增强拉曼散射电磁机制的理论计算可以很好地再现激发剖面。
Composite films of poly(vinyl alcohol) containing polyynes adsorbed on aggregates of Ag nanoparticles were prepared and the stability of the Ag aggregates and polyynes was investigated by measuring the time evolution of absorption and surface-enhanced Raman spectra. The results indicate that the embedded aggregates of Ag nanoparticles and adsorbed polyynes are stable for a month. The high stability of the composite films made it possible to obtain an excitation profile of the surface-enhanced Raman spectrum. The excitation profile could be well reproduced by a theoretical calculation based on the electromagnetic mechanism of surface-enhanced Raman scattering.