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- Title
Controlled Electropolymerization of Ruthenium(II) Vinylbipyridyl Complexes in Mesoporous Nanoparticle Films of TiO<sub>2</sub>.
- Authors
Fang, Zhen; Keinan, Shahar; Alibabaei, Leila; Luo, Hanlin; Ito, Akitaka; Meyer, Thomas J.
- Abstract
Surface-initiated, oligomeric assemblies of ruthenium(II) vinylpolypyridyl complexes have been grown within the cavities of mesoporous nanoparticle films of TiO2 by electrochemically controlled radical polymerization. Surface growth was monitored by cyclic voltammetry as well as UV/Vis and X-ray photoelectron spectroscopy. Polymerization occurs by a radical chain mechanism following cyclic voltammetry scans to negative potentials where reduction occurs at the π* levels of the polypyridyl ligands. Oligomeric growth within the cavities of the TiO2 films occurs until an average of six repeat units are added to the surface-bound initiator site, which is in agreement with estimates of the internal volumes of the pores in the nanoparticle films.
- Subjects
ELECTROPOLYMERIZATION; RUTHENIUM compounds; METAL ions; METAL complexes; MESOPOROUS materials; NANOPARTICLES; TITANIUM dioxide; POLYMERIZATION; CHEMICAL bonds
- Publication
Angewandte Chemie, 2014, Vol 126, Issue 19, p4972
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.201402309