Dipyrromethene-dodecanethiol self-assembled monolayers deposited onto gold electrodes

被引：17
|
作者：
Szymanska, Iwona [1 ]
Orlewska, Czeslawa [2 ]
Janssen, Dimitri [3 ]
Dehaen, Wim [3 ]
Radecka, Hanna [1 ]
机构：
[1] Polish Acad Sci, Inst Anim Reprod & Food Res, PL-10747 Olsztyn, Poland
[2] Med Univ Gdansk, Dept Organ Chem, PL-80416 Gdansk, Poland
[3] Univ Louvain, Dept Chem, B-3001 Louvain, Belgium
来源：
ELECTROCHIMICA ACTA | 2008年 / 53卷 / 27期
关键词：
dipyrromethene; dodecanethiol; self-assembled mixed monolayer; blocking behaviour; pH responses;
D O I：
10.1016/j.electacta.2008.06.002
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
In the work presented, a dipyrromethene with a thiol group has been applied to gold electrode modification. The blocking behaviour of mixed dipyrromethene-thiol (DPT)/dodecanethiol (DDT) self-assembled monolayers (SAMs) has been studied as a function of pH using cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). It has been shown that hydrogen-bonding between adjacent ligands affects the pH properties of SAMs studied. in the modification solution, an optimum ratio dipyrromethane-thiol/dodecanethiol was found to get the strongest pH response of SAM. The dipyrrromethene-thiol/dodecanethiolSAMs have been characterized also by FTIR and wettability contact angle measurements. The possible application of the mixed dipyrromethane-thiol/dodecanethil SAMs presented will be discussed. (c) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码：7932 / 7940
页数：9
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