In 2017,Lu, Te-Jui; Lin, Po-Han; Lee, Kun-Mu; Liu, Ching-Yuan published 《End-Capping Groups for Small-Molecule Organic Semiconducting Materials: Synthetic Investigation and Photovoltaic Applications through Direct C-H (Hetero)arylation》.European Journal of Organic Chemistry published the findings.Product Details of 53939-30-3 The information in the text is summarized as follows:
A Pd-catalyzed C-H (hetero)arylation methodol. has been optimized for the efficient synthesis of various useful end-capping groups that are widely applied in small-mol. optoelectronic materials. We report herein the synthesis of a broad scope of target mols. ranging from donor-type through acceptor-type to hybrid-type end-capping groups. To demonstrate their application in dye-sensitized solar cells, we have designed two new D-A-π-A’-type organic sensitizers (CYL-3 and CYL-4), which were synthesized in a step-economic manner by sequential C-H arylations using the facilely obtained end-capping groups. The devices based on CYL-3 and CYL-4 give Voc values of 0.67-0.71 V, Jsc values of 10.07-11.63 mA cm-2, and FF values of 70.6-72.9 %, which correspond to overall power conversion efficiencies of 4.76-6.02 %. This work is expected to become a practical synthetic alternative allowing materials scientists to access small-mol. organic materials in fewer synthetic transformations.5-Bromo-2-chloropyridine(cas: 53939-30-3Product Details of 53939-30-3) was used in this study.
5-Bromo-2-chloropyridine(cas: 53939-30-3) belongs to pyridine. Pyridines are often used as catalysts or reagents; particular notice has been paid recently to how pyridine coordinates to metal centers enabling a wide range of valuable reactions. Product Details of 53939-30-3