Immobilization of π-conjugated molecules on Au using dendrimer-based templates

• Published in: Current applied physics pp. 723 - 727
• Main Authors: Hideo Tokuhisa, Emiko Koyama, Abdelhak Belaissaoui, Hiroshi Suga, Takao Ishida, Yasushiro Nishioka, Masatoshi Kanesato
• Format: Journal Article
• Language: Korean
• Published: 한국물리학회 01.07.2006
• Subjects: 물리학
• ISSN: 1567-1739; 1878-1675

In this paper, we demonstrate immobilization of two kinds of p-conjugated molecules on Au using dendrimer-based templates; one is a p-phenylene ethynylene derivative and the other is a 4,40-bis(phenylethynyl)-2,20-bipyridine derivative. Both molecules were bound to benzyl-ether dendrons through an alkali-labile, ester linkage to give two different generation dendrimers. The removal of the dendrons from the self-assembled monolayers of the dendrimers left the isolated p-conjugated-molecules as well as small collections of the molecules on the surfaces, which was confirmed by surface Fourier transform infrared (FT-IR) spectroscopy and scanning tunneling microscopy (STM). Insertion of the dendrimer into n-dodecanethiol monolayer instead of the direct adsorption on a bare gold gave only the isolated, single molecules on the surface after the dendrons were removed. KCI Citation Count: 2