| 摘要 |
NEW MATERIAL:A squarylium compound expressed by formula I. USE:An electron charge generator for electrophotographic sensitive substances, capable of producing the electrophotographic sensitive substances having sensitivity over a wide range from visible to near infrared regions and especially providing substances having excellent sensitivity by containing in electrophotographic sensitive substances having a laminated structure of function separated into an electron charge generating and transporting layers in the electron charge generating layer. PREPARATION:One mol 3,4-dihydroxy-3-cyclobutene-1,2-dione expressed by formula II is reacted with 2 mol aniline derivative expressed by formula III in a mixed solvent of butanol and toluene, etc., while being heated to afford the aimed compound expressed by formula I. |
