In Situ FTIR-ATR Analysis and Titration of Carboxylic Acid-Terminated SAMs
- 24 December 2003
- journal article
- research article
- Published by American Chemical Society (ACS) in Journal of the American Chemical Society
- Vol. 126 (2) , 482-483
- https://doi.org/10.1021/ja037610u
Abstract
FTIR-ATR measurements permit detailed structural analysis and in situ titration of carboxylate-terminated self-assembled monolayers. Both monomeric and dimeric/oligomeric acid groups are seen, and their acid−base behavior is directly monitored. Monomers that are hydrogen bonded only to surrounding water molecules have a pKa = 4.9, while the pKa for the aggregated molecules is 9.3.Keywords
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