The author of 《Building an electron push-pull system of linear conjugated polymers for improving photocatalytic hydrogen evolution efficiency》 were Wang, Zijian; Mao, Na; Zhao, Yongbo; Yang, Tongjia; Wang, Feng; Jiang, Jia-Xing. And the article was published in Polymer Bulletin (Heidelberg, Germany) in 2019. Recommanded Product: 624-28-2 The author mentioned the following in the article:
Abstract: A series of linear conjugated polymers with different acceptor units has been synthesized and applied as photocatalysts for hydrogen evolution from water splitting. It was found that the introduction of nitrogen atom into the polymer skeleton could efficiently improve the photocatalytic performance due to the improvement in charge carriers’ transport and separation, and the enhanced interfacial wettability from the hydrogen-bonding interaction between nitrogen atom and water mol. The replacement position of nitrogen atom also has a big influence on the photocatalytic performance due to the enhanced internal dipole orientation. A high hydrogen evolution rate of 18.7 μmol h-1 was achieved by PyPm with strong acceptor unit of pyrimidine. The results demonstrate that the construction of an electronic push-pull system is an efficient strategy to produce linear conjugated polymer photocatalysts with high photocatalytic performance. Graphical abstract: [Figure not available: see full text.]. The experimental process involved the reaction of 2,5-Dibromopyridine(cas: 624-28-2Recommanded Product: 624-28-2)
2,5-Dibromopyridine(cas: 624-28-2) belongs to pyridine. Pyridine is a relatively complex molecule and exhibits a number of different bands in IR spectra. Among others, the bands characterizing the ν8a and ν19b modes have been found to be sensitive to the coordination or protonation of the molecule. Note that the band that is diagnostic for the PyH+ ion at about 1545 cm− 1 (ν19b mode) does not overlap with any of the other bands.Recommanded Product: 624-28-2