A Direct Experimental Evidence of Collective Electron Resonance Mechanism of Surface Enhanced Infrared Spectroscopy (Seirs)
作者:
Jin Zhang,
Jiang Zhao,
Zhongfan Liu,
Hulin Li,
期刊:
Spectroscopy Letters
(Taylor Available online 1998)
卷期:
Volume 31,
issue 4
页码: 787-796
ISSN:0038-7010
年代: 1998
DOI:10.1080/00387019808007400
出版商: Taylor & Francis Group
关键词: Silver Island Films;Langmuir-Blodgett;Surface Enhanced Infrared Spectroscopy (SEIRS)
数据来源: Taylor
摘要:
We report here the preliminary results of the surface enhanced transmission infrared spectra of CH3(CH2)7Azo(CH2)3COOH monolayers on CaF2substrate which was coated by silver island films with different size and distribution. The larger enhancement of absorbance of v(C=O) in COOH residing between silver island gap and small enhancement of absorbance of vibration mode of COO−located on the silver islands are observed. It give us a direct experimental evidence of the collective electron resonance mechanism of surface enhance infrared spectroscopy (SEIRS), i.e. the decrease of the electromagnetic (EM) coupling reduces the enhancement factor of SEIRS.
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