Enhancement of Raman Scattering of 1,4-Benzenedithiol by CdS Nanoparticles Assembled on a Silver Surface

高等学校化学研究 ›› 2004, Vol. 20 ›› Issue (2): 138-141.

Enhancement of Raman Scattering of 1,4-Benzenedithiol by CdS Nanoparticles Assembled on a Silver Surface

ZHOU Qun, ZHAO Hong, LI Xiao-wei, ZHENG Jun-wei

Department of Chemistry, Suzhou University, Suzhou 215006, P.R. China

收稿日期:2003-05-21 出版日期:2004-04-24 发布日期:2011-08-06
基金资助:
Supported by the National Natural Science Foundation of China(No.20073028) and the Key Laboratory of Modern Optical Technologies in Suzhou University.

Enhancement of Raman Scattering of 1,4-Benzenedithiol by CdS Nanoparticles Assembled on a Silver Surface

ZHOU Qun, ZHAO Hong, LI Xiao-wei, ZHENG Jun-wei

Department of Chemistry, Suzhou University, Suzhou 215006, P.R. China

Received:2003-05-21 Online:2004-04-24 Published:2011-08-06
Supported by:
Supported by the National Natural Science Foundation of China(No.20073028) and the Key Laboratory of Modern Optical Technologies in Suzhou University.

摘要/Abstract

摘要： CdS nanoparticles were assembled on the smooth surface of a piece of silver by using 1,4-benzenedithiol as coupling molecules. The SEM and resonance Raman spectroscopic characterizations demonstrate that the nanosized structure of CdS was still preserved upon assembly, and a two-dimensional structure of CdS nanoparticles was formed on the substrate surface. The FT-Raman spectra indicate that 1,4-benzenedithiol was coupled between CdS nanoparticles and the silver surface with a tilted orientation. The Raman scattering of 1,4-benzenedithiol was substantially enhanced by the assembled CdS nanoparticles, probably due to the alteration of the polarizability of 1,4-benzenedithiol and the electromagnetic interaction between the dipoles of the CdS particle with its image in the metal substrate.

关键词: Cadmium sulfide, 1, 4-Benzenedithiol, Nanoparticle, Self-assembly, Raman spectroscopy

Abstract: CdS nanoparticles were assembled on the smooth surface of a piece of silver by using 1,4-benzenedithiol as coupling molecules. The SEM and resonance Raman spectroscopic characterizations demonstrate that the nanosized structure of CdS was still preserved upon assembly, and a two-dimensional structure of CdS nanoparticles was formed on the substrate surface. The FT-Raman spectra indicate that 1,4-benzenedithiol was coupled between CdS nanoparticles and the silver surface with a tilted orientation. The Raman scattering of 1,4-benzenedithiol was substantially enhanced by the assembled CdS nanoparticles, probably due to the alteration of the polarizability of 1,4-benzenedithiol and the electromagnetic interaction between the dipoles of the CdS particle with its image in the metal substrate.

Key words: Cadmium sulfide, 1,4-Benzenedithiol, Nanoparticle, Self-assembly, Raman spectroscopy

ZHOU Qun, ZHAO Hong, LI Xiao-wei, ZHENG Jun-wei. Enhancement of Raman Scattering of 1,4-Benzenedithiol by CdS Nanoparticles Assembled on a Silver Surface[J]. 高等学校化学研究, 2004, 20(2): 138-141.

ZHOU Qun, ZHAO Hong, LI Xiao-wei, ZHENG Jun-wei. Enhancement of Raman Scattering of 1,4-Benzenedithiol by CdS Nanoparticles Assembled on a Silver Surface[J]. Chemical Research in Chinese Universities, 2004, 20(2): 138-141.

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Enhancement of Raman Scattering of 1,4-Benzenedithiol by CdS Nanoparticles Assembled on a Silver Surface

Enhancement of Raman Scattering of 1,4-Benzenedithiol by CdS Nanoparticles Assembled on a Silver Surface

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