Solvent-Stabilized Oxovanadium Phthalocyanine Nanoparticles and Their Application in Xerographic Photoreceptors

Xinran Zhang, Yongfeng Wang, Yan Ma, Yingchun Ye, Yuan Wang,* and Kai Wu*
State Key Lab for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
Langmuir, 2006, 22 (1), pp 344–348
DOI: 10.1021/la0521746
Publication Date (Web): November 19, 2005
Copyright © 2006 American Chemical Society
*

 Corresponding authors. E-mail:  wangy@pku.edu.cn (Y.W.); kaiwu@pku.edu.cn (K.W.). Phone:  +86-10-62757497 (Y.W.); +86-10-6275-4005 (K.W.). Fax:  +86-10-6276-5769 (Y.W.); +86-10-6275-4005 (K.W.).

Abstract

Abstract Image

A stable organic sol of solvent-stabilized oxovanadium phthalocynine (VOPc) nanoparticles with excellent photoconductivity was successfully prepared by ultrasonificating a prepared nanoscopic VOPc powder in1,2-dichloroethane (C2H4Cl2) without any additive. These solvent-stabilized VOPc nanoparticles have a size distribution from 2 to 20 nm with an average diameter of 4.6 nm. The VOPc concentration of these organic sols could be as high as 100 g/L. The nanoscopic VOPc particles were well-dispersed in an insulating polycarbonate (PC) resin, resulting in single-layered photoreceptors with high surface charge durability in the dark and excellent photoconductivity. Based on the light-assisted scanning tunneling microscopy (STM) measurements, the charge transport mechanism of these photoreceptors was ascribed to light-induced enhancement of electron tunneling through the VOPc-nanoparticle/insulator junctions.

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History

  • Published In Issue January 03, 2006
  • Received August 10, 2005
    Revised October 16, 2005

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