In 2019,Polymers (Basel, Switzerland) included an article by Zhang, Mingjing; Zhu, Liangjian; Guo, Pengzhi; Wang, Xunchang; Tong, Junfeng; Zhang, Xiaofang; Jia, Yongjian; Yang, Renqiang; Xia, Yangjun; Wang, Chenglong. Product Details of 516-12-1. The article was titled 《Effect of flank rotation on the photovoltaic properties of dithieno[2,3-d:2′,3′-d′]benzo [1,2-b:4,5-b′]dithiophene-based narrow band gap copolymers》. The information in the text is summarized as follows:
Side chain engineering has been an effective approach to modulate the solution processability, optoelectronic properties and miscibility of conjugated polymers (CPs) for organic/polymeric photovoltaic cells (PVCs). As compared with the most commonly used method of introducing alkyl chains, the employment of alkyl-substituted aryl flanks would provide two-dimensional (2-D) CPs having solution processability alongside addnl. merits like deepened HOMO (HOMO) energy levels, increased absorption coefficient and charger transporting, etc. In this paper, the triple C≃C bond was used as conjugated linker to decrease the steric hindrance between the flanks of 4,5-didecylthien-2-yl (T) and dithieno[2,3-d:2′,3′-d′]benzo[1,2-b:4,5-b′]dithiophene (DTBDT) core. In addition, an alternating CP derived from 4,5-didecylthien-2-yl-ethynyl (TE) flanked DTBDT, and 4,9-bis(4-octylthien-2-yl) naphtho[1,2-c:5,6-c′]bis[1,2,5]thiadiazole (DTNT), named as PDTBDT-TE-DTNT, was synthesized and characterized. As compared with the controlled PDTBDT-T-DTNT, which was derived from 4,5-didecylthien-2-yl flanked DTBDT and DTNT, the results for exciton dissociation probability, d. functional theory (DFT), time-resolved photoluminescence (PL) measurements, etc., revealed that the lower steric hindrance between TE and DTBDT might lead to the easier rotation of the TE flanks, thus contributing to the decrease of the exciton lifetime and dissociation probability, finally suppressing the short-circuit c.d. (JSC), etc., of the photovoltaic devices from PDTBDT-TE-DTNT. In the experimental materials used by the author, we found 1-Iodopyrrolidine-2,5-dione(cas: 516-12-1Product Details of 516-12-1)
1-Iodopyrrolidine-2,5-dione(cas: 516-12-1) is used in the preparation of vinyl sulfones from olefins and benzenesulfinic acid. It acts as a source for I+ and involved in Hunsdiecker reactions for the conversion of cinnamic acids, and propiolic acids to the corresponding alfa-halostyrenes and 1-halo-1-alkynes respectively. Product Details of 516-12-1
Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com