专利号:SU-1441718-A1 优先权日:1987-03-09 标 题:H-undecyl ether of 2,7-dinitro-9-DITSIANMETILENFLUOREN-4-carboxylic acid amide as a sensitizer PHOTOCONDUCTIVITY carbazole POLYMERS AND N-2.7-undecyl ether DINITROFLUORENON-4-carboxylic acid as an intermediate in its synthesis