NOVEL SQUARIUM COMPOUND AND ITS PREPARATION

摘要

NEW MATERIAL:The compound of formula I (X is H, F or Cl). USE:Charge-generation substance for electrophotography. It has flat spectrometric sensitivity over the wavelength range of 400-850nm, and has sufficiently high photo-sensitivity in whole visible range and near-infrared range. It can be applied to an optical recording medium such as laser disc and an organic solar cell as well as a semiconductor laser printer. PREPARATION:The compound of formula I can be prepared by reacting the compound of formula II with the aniline derivative of formula III preferably in a solvent (e.g. n-butyl alcohol) at 120-140 deg.C for 3-5hr.