Surface-Enhanced Infrared Absorption Spectroscopy of p-Nitrothiophenol on Vapor-Deposited Platinum Films

$29.00 plus tax (Refund Policy)

Buy Article:

Abstract:

Surface-enhanced infrared absorption (SEIRA) has been observed by transmission spectroscopy on a vapor-deposited platinum substrate. Monolayers of p-nitrothiophenol (p-NTP) adsorbed on thin island films of platinum were used to probe the enhancement and distortion of the absorption bands of p-NTP. The greatest enhancement was accompanied by distortion of the strongest band in the spectrum of p-NTP into a bipolar shape. The magnitude of enhancement was dependent on the size of the metal islands and their proximity to each other. The applicability of the surface selection rule to SEIRA was confirmed by the weakness of the antisymmetric NO2 stretching band in the spectra of the self-assembled monolayers. Although these preliminary transmission studies show only modest (~10×) enhancement when p-NTP is vapor-deposited onto platinum films, the potential of SEIRA for transmission studies on platinum island films has been established.

Keywords: PLATINUM; SELF-ASSEMBLED MONOLAYERS; SURFACE ANALYSIS; SURFACE-ENHANCED INFRARED ABSORPTION

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/000370202760355226

Publication date: October 1, 2002

More about this publication?
Related content

Tools

Favourites

Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more