四磺酸铜酞菁包覆二氧化钛纳米颗粒的超薄膜：制备、表征及光伏效应

Ultrathin films of tetrasulfonated copper phthalocyanine-capped titanium dioxide nanoparticles: fabrication, characterization, and photovoltaic effect.

作者信息

Ding Hanming, Zhang Xiuqin, Kumar Ram Manoj, Nicolini Claudio

机构信息

Department of Chemistry, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, People's Republic of China.

出版信息

J Colloid Interface Sci. 2005 Oct 1;290(1):166-71. doi: 10.1016/j.jcis.2005.04.052.

DOI:10.1016/j.jcis.2005.04.052

PMID:15964010

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.

摘要

通过层层（LBL）自组装技术制备了四磺酸铜酞菁（CuTsPc）包覆的TiO₂纳米颗粒超薄膜。通过将CuTsPc包覆的TiO₂纳米颗粒与聚二烯丙基二甲基氯化铵连续吸附形成交替的双层结构。进行了光学和电学测量以表征CuTsPc包覆的TiO₂纳米颗粒超薄膜。光学测量显示沉积均匀。此类双层膜的表面形态呈现出与其他类型的LBL膜相似的颗粒形态。电学测量揭示了白光照射下的异常现象。对这种双层体系进行了电化学和光电化学测量，以阐明电子传输过程和光伏效应。