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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/12905

Title: Determination of the surface acidity of a free-base corrole in a self-assembled monolayer
Authors: Nulens, Wienand
Grabowska, Iwona
Thien Huynh Ngo
MAES, Wouter
Dehaen, Wim
Radecka, Hanna
Radecki, Jerzy
Issue Date: 2011
Publisher: SPRINGER
Abstract: Mixed self-assembled monolayers (SAMs) containing a corrole moiety have been prepared to examine their electrochemical properties and surface acidity, with the eventual goal of biosensor development. Mixed SAMs consisting of 6-mercapto-hexanol (6-MHO) and 8-amino-1-octanethiol (8-AOT) in varying ratios were modified with a free-base corrole and characterized via Osteryoung square-wave voltammetry and contact angle measurements. The surface acidity of the free-base corrole was determined using an electrochemical titration method, with pK(a) values established at 6.4 when using Fe(CN)(6)(4-)/Fe(CN)(6)(3-) as a redox probe and at 6.7 when using iodide, and assigned to the CorH(4)(+) reversible arrow CorH(3) + H(+) equilibrium.
Notes: Radecki, J (reprint author),[Nulens, Wienand; Grabowska, Iwona; Radecka, Hanna; Radecki, Jerzy] Polish Acad Sci, Dept Biosensors, Inst Anim Reprod & Food Res, PL-10747 Olsztyn, Poland. [Thien Huynh Ngo; Maes, Wouter; Dehaen, Wim] Katholieke Univ Leuven, Dept Chem, B-3001 Louvain, Belgium. [Maes, Wouter] Hasselt Univ, Inst Mat Res Res Grp Organ & Bio Polymer Chem, B-3590 Diepenbeek, Belgium. j.radecki@pan.olsztyn.pl
URI: http://hdl.handle.net/1942/12905
DOI: 10.1007/s10847-010-9889-y
ISI #: 000297135000030
ISSN: 0923-0750
Category: A1
Type: Journal Contribution
Validation: ecoom, 2012
Appears in Collections: Research publications

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