Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9676018 | Colloids and Surfaces A: Physicochemical and Engineering Aspects | 2005 | 7 Pages |
Abstract
A novel rigid self-assembled monolayer derived from a perylene derivative, 3,4,9,10-perylene tetracarboxylic acid, was prepared on hydroxyl-bearing surfaces via an ester bond-linkage. Contact angle measurements, UV-visible spectra, cyclic voltammetry and atomic force microscopy characterization showed that densely packed, well-ordered monolayer was formed at the ITO and mica substrates. The as-grown PTA SAM was photoactive, as characterized by steady anodic photocurrent generation from the PTA monolayer modified ITO in a three-electrode photoelectrochemical cell upon illumination with the presence of electron sacrificer electrode in the electrolyte. The agreement of the photoaction spectrum with optical absorption spectrum demonstrates that the PTA dye-aggregate within the SAM is responsible for the photocurrent generation.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Colloid and Surface Chemistry
Authors
Wenlong Wang, Jin Zhai, Lei Jiang, Fenglian Bai, Yanjie Ren, Bo Zhang, Shengmin Cai,