Simple-structure small molecular acceptors based on a benzodithiophenedione core: synthesis, optoelectronic and photovoltaic properties was written by Zhu, Mengbing;Yu, Xiankang;Huang, Jingwei;Xia, Hao;Zhu, Jianing;Peng, Wenhong;Tan, Hua;Zhu, Weiguo. And the article was included in New Journal of Chemistry in 2021.COA of Formula: C9H4I2OS2 This article mentions the following:
It is crucial to develop high-efficiency simple-structure small mol. acceptors (SMAs) having a shortened synthetic route and lower cost. Herein, two simple SMAs, BDDTTIC and BDDTTIC-4F, with the A-D-A-D-A architecture were primarily synthesized via a simple three-step route in high yields, based on the central acceptor (A′) unit of benzodithiophenedione (BDD), the spacing donor (D) unit of thienothiophene (TT) and the terminal acceptor (A) unit of dicyanomethylene indanone (IC) or its fluorinated analog (IC-4F). The influence of the mol. structure on the photophys., electrochem. and photovoltaic properties was primarily studied. The results show that the fluorine-free BDDTTIC exhibits better solubility and higher LUMO energy levels (-3.81 eV) than the fluorinated BDDTTIC-4F. Moreover, the PM6:BDDTTIC based OSCs show better photovoltaic properties than the PM6:BDDTTIC-4F based OSCs by optimizing the polymer donor material, donor/acceptor ratio and 1-chloronaphthalene additive ratio. An increasing power conversion efficiency of 5.62% with a high open-circuit voltage of 0.95 V was obtained in the optimal PM6:BDDTTIC-based device, which is almost two times higher than that of the optimal PM6:BDDTTIC-4F-based device. This work provides a potential direction to further construct high-efficiency BDD-based SMAs. In the experiment, the researchers used many compounds, for example, Bis(2-iodothiophen-3-yl)methanone (cas: 474416-61-0COA of Formula: C9H4I2OS2).
Bis(2-iodothiophen-3-yl)methanone (cas: 474416-61-0) belongs to iodide derivatives. Organic iodides are organic compounds containing a carbon-iodine (C-I) bond. The carbon-iodine bond is weaker than other carbon-halogen bonds due to the poor electronegative nature of the iodine atom. In the chemical industry, alkyl iodides serve as excellent alkylating agents and, specifically, methyl iodide is used as a methylating agent in the synthesis of various pharmaceutical drugs.COA of Formula: C9H4I2OS2
Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com