SERS of Guanine and its Alkyl Derivatives on Gold Sols
SER spectra of guanine, 7‐methylguanine and 9‐ethylguanine on a gold colloid are reported. An assignment of these spectra is carried out by comparison with the corresponding Raman spectra in aqueous solution. The interpretationof the SER spectra reveals the influence that the alkyl substituents exer...
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| Published in: | Journal of Raman spectroscopy Vol. 27; no. 7; pp. 533 - 537 |
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| Main Authors: | , , |
| Format: | Journal Article |
| Language: | English |
| Published: |
Chichester, UK
John Wiley & Sons, Ltd
01-07-1996
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| Online Access: | Get full text |
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| Summary: | SER spectra of guanine, 7‐methylguanine and 9‐ethylguanine on a gold colloid are reported. An assignment of these spectra is carried out by comparison with the corresponding Raman spectra in aqueous solution. The interpretationof the SER spectra reveals the influence that the alkyl substituents exert on the electrodynamic behaviour of theguanine derivatives when adsorbed on the gold surface. Thus, guanine and 7‐methylguanine adsorb mainly in their ketonic form, adopting a perpendicular arrangement on the gold surface, whereas 9‐ethylguanine lies nearly flat on this support. In addition, the comparison with results obtained previously using silver and copper as supports demonstrates the different affinity that these bases show towards the three metal supports commonly employed in SERS. |
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| Bibliography: | ark:/67375/WNG-TMWMDGQM-Q ArticleID:JRS996 Ministerio de Educación y Ciencia, Dirección General de Investigación Científica y Técnica (DGICYT) - No. Project PB-93 0973 CO2 istex:E81B4988195EDA7E32C92C2D92FEF91BEEBC1E1D ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
| ISSN: | 0377-0486 1097-4555 |
| DOI: | 10.1002/(SICI)1097-4555(199607)27:7<533::AID-JRS996>3.0.CO;2-E |