title: [Study on crystalline and properties of N', N-Bis (n-butyl)-3, 4, 9, 10-perylene tetracarboxylic diimide].
abstract: N', N-Bis(n-butyl)-3,4,9,10-perylene tetracarboxylic diimide was synthesized, purified and crystallized, then IR, element analysis and X-ray diffraction were tested. The spectrum of UV-Vis absorption (maximum absorption peak at 524. 80 nm), fluorescence emission (maximum emission intensity at 539.0 nm) and stokes displacement (15 nm) of the compound in DMF were analyzed. The UV-Vis absorption spectrum between 400 and 700 nm in a film can indicate that alpha-crystal has much stronger absorption peaks than beta-crystal and that red shift of maximum absorption occurs (545 to 580 nm) when beta-crystal is changed into alpha-crystal. It is obvious that CPS of alpha, beta-crystal are respectively 2 508 at 26.0 degrees and 1 891 at 25.2 degrees in the X-ray diffraction pattern. The functional separate photoreceptors of alpha, beta-crystal as charge generation material were made, and photoconductivity properties were tested after charging the sample and then using spectral light of 532 nm formed by a band path filter.
authors.affiliation: Beijing Area Major Laboratory of Printing Packaging Material and Technology, Beijing Institute of Graphic Communication, Beijing 102600, China.
authors.forename: Wen-Guan
authors.initials: WG
authors.lastname: Zhang
authors.forename: Sheng-Min
authors.initials: SM
authors.lastname: Zhao