The adhesive properties of pyridine-terminated self-assembled monolayers

THIN SOLID FILMS

卷:517

Article

Bowen, James²  Manickam, Mayandithevar²  Iqbal, Parvez²  Evans, Stephen D.³  Critchley, Kevin³  Preece, Jon A.²  Kendall, Kevin¹ 

[1] Univ Birmingham, Sch Chem Engn, Birmingham B15 2TT, W Midlands, England

[2] Univ Birmingham, Sch Chem, Birmingham B15 2TT, W Midlands, England

[3] Univ Leeds, Dept Phys & Astron, Leeds LS2 9JT, W Yorkshire, England

关键词: Self-assembled monolayer;    Adhesion;    Surface chemistry;    Pyridine;    Gold;    Atomic force microscopy;   

DOI  :  10.1016/j.tsf.2009.01.093

来源: Elsevier

【 摘 要 】

The atomic force microscopy (AFM) adhesion force behaviour and contact angle titration behaviour of self-assembled monolayers (SAMs) presenting surface pyridine and substituted pyridine moieties has been investigated as a function of pH and electrolyte concentration. The pK(a)s of the pyridine moieties were modified through the incorporation of fluorine, chlorine and bromine substituents in the pyridyl ring. Contact angle titration and AFM adhesion force measurements were performed using aqueous phosphate buffered saline solutions over the pH range 3-9, and at concentrations of 150 mM and 0.1 mM. AFM adhesion force measurements were performed using a clean Si3N4 pyramidal-tipped AFM cantilever. (C) 2009 Elsevier B.V. All rights reserved.

【 授权许可】

Free