期刊
NANO LETTERS
卷 6, 期 11, 页码 2617-2621出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl062283k
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- NIDDK NIH HHS [1T90DK070121-01] Funding Source: Medline
- NLM NIH HHS [T15 LM007093, 5T15LM07093] Funding Source: Medline
Alkanethiol self-assembled monolayers (SAMs) on gold exhibit a series of sharp resonances in their surface-enhanced Raman spectrum that depend dramatically on carbon chain length. This unusual behavior suggests a coupling of the gold-sulfur bond stretch with the longitudinal acoustic, accordion, vibrations of the molecular alkane chain. A simple model of a one-dimensional chain attached to a surface quantitatively reproduces these previously unreported experimental observations in this important nanomaterial system.
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