Electronic Characteristics of Perylene Diimide Anion Radical and Dianion Films by Quantitative Doping  

作　　者：JIA Yanhua JIANG Qinglin WANG Bohan YANG Jiaji ZHANG Jiang MA Yuguang 

机构地区：[1]Institute of Polymer Optoelectronic Materials and Devices,State Key Laboratory of Luminescent Materials and Devices,South China University of Technology,Guangzhou,510640,P.R.China [2]Department of Physics,South China University of Technology,Guangzhou,510640,P.R.China

出　　处：《Chemical Research in Chinese Universities》2023年第2期187-191,共5页高等学校化学研究（英文版）

基　　金：National Key R&D Program of China(No.2020YFA0714604);National Natural Science Foundation of China(Nos.U20A6002,91833304,5152100222005107,52203221);Basic and Applied Basic Research Major Program of Guangdong Province,China(No.2019B030302007);Research and Development Funds for Science and Technology Program of Guangzhou,China(No.202007020004);Natural Science Foundation of Guangdong Province,China(Nos.2019B121205002,2022A1515010063);Fund of the Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates,China(No.2019B030301003);Funding by Science and Technology Projects in Guangzhou,China(Nos.202102020401,202102020561).

摘　　要：Due to their unique physicochemical properties,the anion radical and dianion of perylene diimide derivatives(PDIs)recently attracted significant attention for organic semiconductors.However,the impact of packing structure and the radical content for carrier transport in the solid state still need to be determined.Bringing the electron-withdrawing groups is an effective strategy for enablingπ−πstacking distance.Here,bay-tetrachloro-substituted PDI(B-4Cl-PDI)anion radical and dianion films were fabricated quantitatively doped with N_(2)H_(4)·H_(2)O.The radical contents were quantitatively calculated by absorption spectra in different doping ratios.The X-ray powder diffraction patterns showed that the anion radical presented a crystalline structure,and dianion aggregates exhibited an amorphous structure.With precise manipulation of the radical content,the anion radical aggregates and dianion aggregates showed the maximum electrical conductivity value of 0.024 and 0.0018 S/cm,respectively.The experiment results show that doping level and aggregate structure play a crucial role in electronic transport properties.

关 键 词：Perylene diimide derivative(PDI) Anion radical aggregate Dianion aggregate Radical content Electronic conductivity 

分 类 号：O62[理学—有机化学]