title: Ultrathin films of tetrasulfonated copper phthalocyanine-capped titanium dioxide nanoparticles: fabrication, characterization, and photovoltaic effect.
abstract: Tetrasulfonated copper phthalocyanine (CuTsPc)-capped TiO2 nanoparticle ultrathin films were fabricated by a layer-by-layer (LBL) self-assembly technique. Alternating bilayer structures were formed by consecutive adsorption of CuTsPc-capped TiO2 nanoparticles with poly(diallyldimethylammonium chloride). Optical and electrical measurements were carried out to characterize the CuTsPc-capped TiO2 nanoparticle ultrathin films. Optical measurements revealed uniform deposition. The surface morphology of such bilayer films showed a granular morphology similar to other classes of LBL films. Electrical measurements revealed an abnormal phenomenon under white light illumination. Electrochemical and photoelectrochemical measurements on such a bilayer system were carried out to elucidate the electron transport processes and the photovoltaic effect.
authors.affiliation: Department of Chemistry, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, People's Republic of China. hmding@chem.ecnu.edu.cn
authors.forename: Hanming
authors.initials: H
authors.lastname: Ding
authors.forename: Xiuqin
authors.initials: X
authors.lastname: Zhang
authors.forename: Manoj
authors.initials: M
authors.lastname: Kumar Ram
authors.forename: Claudio
authors.initials: C
authors.lastname: Nicolini
mesh_terms: D007211:Indoles / Q000737:chemistry*; D008567:Membranes, Artificial; D049329:Nanostructures / Q000737:chemistry*; D009942:Organometallic Compounds / Q000737:chemistry*; D010316:Particle Size; D010777:Photochemistry; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry*
chemical_list: D007211:Indoles; D008567:Membranes, Artificial; D009942:Organometallic Compounds; C009495:titanium dioxide; C056110:copper phthalocyanine tetrasulfonic acid; D014025:Titanium