Construction of hybrid films of silver nanoparticles and polypyridine ruthenium complexes on substrates

Abstract

Hybrid films of functional molecules and metal nanoparticles have been considered to be novel photo-functional devices. Here we have successfully constructed hybrid films of silver nanoparticles and ruthenium polypyridine derivatives on substrates. In order to hybridise them on a surface, a self-assembled monolayer method via chemical bond formation and electro-reductive polymerisation (thick layers) via physical attachment have been employed. These methods have the advantage of convenient and reproducible fabrication of complicated hybrid films. Furthermore, it has been clarified that these hybrid films show unique photo-functional behaviours, such as enhanced photocurrent generation.

Fabrication of One-Dimensional Polymer Nanowires by Templated Bipolar Electropolymerization Promoted by Electrophoretic Effect

“…These electropolymerized complex films are useful in many aspects, such as electrochromism, electrogenerated chemiluminescences, electrocatalysis, and sensors . Zhong and co-workers developed an efficient ligand of 5,5′-divinyl-2,2′-bipyridine (5,5′-dvbpy) to transform ruthenium complexes into their polymeric films. ,, This class of ruthenium complexes showed superior electropolymerization ability, while fabrication of polymer nanowires with these monomers has never been investigated. [Ru­(5,5′-dvbpy)­(bpy) 2 ]­(PF 6 ) 2 ( 1 ) and [Ru­(5,5′-dvbpy) 3 ]­(PF 6 ) 2 ( 2 ) were synthesized according to the reported procedures (Supporting Information, Scheme S1). ,, During the reductive electropolymerization by cyclic voltammetry (CV), the current increased continuously with CV cycles for both compounds, which validates successful deposition of polymeric films on the electrode surface.…”

“…34 Zhong and co-workers developed an efficient ligand of 5,5′-divinyl-2,2′-bipyridine (5,5′-dvbpy) to transform ruthenium complexes into their polymeric films. 29,35,36 This class of ruthenium complexes showed superior electropolymerization ability, while fabrication of polymer nanowires with these monomers has never been investigated. [Ru(5,5′dvbpy)(bpy) 2 ](PF 6 ) 2 (1) and [Ru(5,5′-dvbpy) 3 ](PF 6 ) 2 (2) were synthesized according to the reported procedures (Supporting Information, Scheme S1).…”