title: In situ FTIR-ATR analysis and titration of carboxylic acid-terminated SAMs.
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.
authors.affiliation: Chemistry Department, Bar-Ilan University, Ramat Gan 52900, Israel.
authors.forename: Olga
authors.initials: O
authors.lastname: Gershevitz
authors.forename: Chaim N
authors.initials: CN
authors.lastname: Sukenik