| Effects of a magnetic force on surface-enhanced Raman spectra of a cysteamine linking magnetic particle and a silver colloid plate. | |
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MedLine Citation:
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PMID: 17625336 Owner: NLM Status: PubMed-not-MEDLINE |
Abstract/OtherAbstract:
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The effects of a magnetic force on magnetic particles linked by cysteamine to a silver colloid plate were analyzed with surface-enhanced Raman scattering spectroscopy. Cysteamine molecules were stretched by a force exerted on the magnetic particles with the external magnetic field gradients generated by two Nd-Fe-B magnets. The spectra showed that the relative intensity ratio of C-S (trans) to C-S (gauche) of cysteamine was increased 2 - 3 times within 30 min under the application of magnetic field gradients. Also, the shift of C-S (T) was observed up to 4 cm(-1) to higher frequency. These results suggested that an extension of the distance between a magnetic particle and a silver colloid induced isomerization from the gauche conformation to the trans conformation, accompanied by probable thiolate migration on the silver colloid surface. |
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Authors:
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Takeyoshi Goto; Shigeki Yamamoto; Hitoshi Watarai |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Analytical sciences : the international journal of the Japan Society for Analytical Chemistry Volume: 23 ISSN: 0910-6340 ISO Abbreviation: Anal Sci Publication Date: 2007 Jul |
Date Detail:
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Created Date: 2007-07-12 Completed Date: 2007-09-07 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8511078 Medline TA: Anal Sci Country: Japan |
Other Details:
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Languages: eng Pagination: 891-3 Citation Subset: - |
Affiliation:
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Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka, Japan. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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