Benzothiadiazole-functionalized Metal Phthalocyanines: Design,Synthesis And Properties

Organic solar cells have been attracting considerable attention on the domestic andinternational research. This paper focuses on the development of new organic light activematerial system, accesses to comprehensive properties of molecular materials, to provide atheoretical and experimental basis for the practical application of organic materials in solarcells.(1) This study synthetics with regular structure, good solubility and functional eightinstead of metal phthalocyanine from the perspective of molecular design.1. It was found thatDBU and ZnPc-AD are happened coordinated due to the introduction of benzothiadiazole.2.The ZnPc-DAD have a broader absorption spectrum than zinc phthalocyanine, covering from300to900nm of the visible region. The ZnPc-DAD film exhibits obvious red shif.(2) We have synthesized a conjugated polymer PDTSTOx using Stille polymerization.The thermal, electrochemical, and spectral properties of the the copolymer were investigated.The copolymer covers the visible region from300to600nm The investigation on the Theheterojunction battery devices of the ITO/PEDOT: PSS/polymer: PC71BM/LiF(1nm)/Al(100nm) give power conversion efficiency of0.47%with Voc of0.83V. under simulatedsolar light AM1.5G (100mW/cm~2).We synthesized a conjugated polymer PDTSTAD with aside chain containing electron withdrawing groups.However, the polymer have poorsolubility due to the conjugated main chain with two ternary ring, so that it is not soluble inthe heating organic solvents of chloroform, chlorobenzene, dichlorobenzene, and cannot befurther device characterization.