Sum Frequency Generation Vibrational Spectroscopy Study of Fe3O4 Nanoparticles Modified by Oleic Acid Molecules

doi:10.3969/j.issn.0251-0790.2012.07.028

Chem. J. Chinese Universities ›› 2012, Vol. 33 ›› Issue (07): 1517.doi: 10.3969/j.issn.0251-0790.2012.07.028

• Physical Chemistry • Previous Articles Next Articles

Sum Frequency Generation Vibrational Spectroscopy Study of Fe₃O₄ Nanoparticles Modified by Oleic Acid Molecules

HUANG Zhi^1,2, GUO Yuan¹

1. Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Molecular Reaction Dynamics, Institute of Chemistry Chinese Academy of Sciences, Beijing 100190, China;
2. Graduate School of the Chinese Academy of Sciences, Beijing 100049, China

Received:2011-12-26 Online:2012-07-10 Published:2012-07-10

Abstract

Abstract: The sum frequency generation vibrational spectroscopy(SFG-VS), an interface selective and chemical specific nonlinear optical technology, was used to study the Fe₃O₄ nanoparticles modified by oleic acid molecules. The SFG spectra of two different experimental configurations(configuration 1: the incident angle of visible laser beam is 63?; configuration 2: the incident angle of visible laser is 45?) and three polarization combinations(ssp, ppp and sps) were investigated. The coherent features of SFG spectra in different experimental configurations were analyzed and the vibrational modes of the spectral peaks were assigned according to the polarization selection rules.

Key words: Sum frequency generation vibrational spectroscopy(SFG-VS), Fe₃O₄, Nanopaticles, Oleic acid

CLC Number:

O644

TrendMD:

HUANG Zhi, GUO Yuan. Sum Frequency Generation Vibrational Spectroscopy Study of Fe₃O₄ Nanoparticles Modified by Oleic Acid Molecules[J]. Chem. J. Chinese Universities, 2012, 33(07): 1517.

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Sum Frequency Generation Vibrational Spectroscopy Study of Fe₃O₄ Nanoparticles Modified by Oleic Acid Molecules

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