正丁基茈四羧酸二酰亚胺的晶型和性能研究

文章合成了N,N’-二正丁基四羧酸二酰亚胺,并纯化、调晶,进行了IR、元素分析、X射线等测定。分析该化合物在DMF中的紫外光谱(最大吸收波长524.80 nm)、荧光光谱(最大发射波长539.0 nm)、Stokes位移(数值15 nm)等光谱性质。在400~700 nm范围内,α晶型薄膜紫外-可见吸收出现很强的吸收峰,且由β型变为α型,最大吸收波长有明显的红移(545 nm变为580 nm)。X射线粉末衍射也反映出α晶型的2θ在26.0°处衍射峰CPS为2 508,β型在25.2°为1 891。α,β晶型作为电荷产生材料制得的功能分离型有机光导体,在光源滤波波长λ=532 nm曝光下,测得含α,β感光体达到饱和电位的时间分别为46,93.98 s,光衰电位(5.3千伏电压负充电电晕,1~2 s后的表面电位)分别为727和525 V,半衰曝光量分别为4.32,4.34μJ.cm-2,残余电位分别为30和45 V等光导性能数值。

Study on Crystalline and Properties of N',N-Bis(n-butyl)-3,4,9,10-Perylene Tetracarboxylic Diimide

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.