In 2019,Electrochimica Acta included an article by Wu, Hong Yue; Yang, Qian; Gao, Xue Lang; Zhu, Zhao Yu; Sun, Qi Hui; Zhang, Qiu Gen; Zhu, Ai Mei; Liu, Qing Lin. Quality Control of 1,6-Dibromohexane. The article was titled 《Novel crosslinked aliphatic anion exchange membranes with pendant pentafluorophenyl groups》. The information in the text is summarized as follows:
To enhance the performance of anion exchange membranes (AEMs) by constructing effective ion channels, the authors synthesized novel aliphatic polymers with pentafluorophenyl pendent groups via superacid catalyzed polyhydroxyalkylation and quaternization by grafting multi-cation crosslinker through the Menshutkin reaction. The procedure adopted in this study for preparing the AEMs circumvented the use of precious metal catalysts and made it easy to control the reaction conditions. Compared with the traditional aliphatic AEMs, the AEMs prepared by the new strategy exhibited well-developed microphase-separated structures by increasing the hydrophilic/hydrophobic difference between the polymer backbones and the side chains. Also, the multi-cation crosslinker not only provides ion exchange groups but also constrains the swelling of the AEMs. As the authors expected, the well-defined ion channels were validated by TEM and small angle x-ray scattering (SAXS). The CPFBP-TQA-100 membrane shows a highest ion conductivity of 76.85 mS cm-1 and a swelling ratio of only 24.8% at 80°. A maximum power d. of 116.7 mW cm-2 is achieved by a single cell using the CPFBP-TQA-100 membrane at a c.d. of 300 mA cm-2 at 80°. Besides, all the AEMs display excellent thermal stability and reasonable alk. stability. The results came from multiple reactions, including the reaction of 1,6-Dibromohexane(cas: 629-03-8Quality Control of 1,6-Dibromohexane)
1,6-Dibromohexane(cas: 629-03-8) is generally used to introduce C6 spacer in the molecular architecture. Some of the examples are: synthesis of solvent processable and conductive polyfluorene ionomers for alkaline fuel cell applications; synthesis of cross-linkable regioregular poly(3-(5-hexenyl)thiophene) (P3HNT) for stabilizing the film morphology in polymer photovoltaic cells.Quality Control of 1,6-Dibromohexane
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary