【摘要】 苝二酰亚胺(PDI)分子由于其独特的光电性能和优越的化学稳定性，PDI基材料在光电材料、荧光检测等领域表现出巨大的潜力。POSS-PDI-POSS(PPP)由于酰亚胺位大体积位阻POSS的存在，在其晶体结构中具有独特的二聚体基元，抑制PDI的连续π-π堆积，使得其保持着较高的荧光量子产率。因此，探究PPP晶体形成过程二聚体组装行为和条件，构建PPP分子结构与其组装、荧光行为的构效关系，有利于拓展其应用。本文探究PPP气相扩散单晶培养的关键因素，通过改变氯仿与甲醇溶剂组成比例和溶液浓度，调控PPP组装环境，借助二聚体在紫外可见吸收光谱和荧光发射光谱中的特征信号，阐明PPP晶体析出过程中其二聚体的形成过程。更多还原

【Abstract】 Perylene imide(PDI) molecules show great potential in the fields of photoelectric materials and fluorescence detection due to their unique photoelectric properties and superior chemical stability.POSS-PDI-POSS(PPP) has a unique dimeric element in its crystal structure due to the existence of large volume steric hindrance of imide site POSS,which inhibits the continuous π-π packing of PDI and maintains a high fluorescence quantum yield.Therefore, exploring the dimer assembly behavior and conditions of PPP crystal formation and constructing the structure-activity relationship between PPP molecular structure and its assembly and fluorescence behavior is conducive to expanding its application.In this paper, the key factors of PPP vapor diffusion single crystal culture were investigated.The PPP assembly environment was regulated by changing the composition ratio and solution concentration of chloroform and methanol solvent.The dimer formation process during PPP crystal precipitation was elucidated by means of the characteristic signals of dimer in UV-VIS absorption spectrum and fluorescence emission spectrum.更多还原