School of Chemistry and Chemical Engineering/Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Key Laboratory of Materials-Oriented Chemical Engineering of Xinjiang Uygur Autonomous Region, Engineering Research Center of Materials-Oriented Chemical Engineering of Xinjiang Bingtuan, Shihezi University, Shihezi, 832003, P. R. China.
State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, P. R. China.
Macromol Rapid Commun. 2018 Jun;39(12):e1800160. doi: 10.1002/marc.201800160. Epub 2018 May 11.
Dopamine (DA) polymerization has received significant attention in many fields, however, almost all of the works are limited to aqueous solution and hamper its wide application. This paper reports that amines can trigger DA polymerization by capturing the H from DA hydrochloride and intermediates to accelerate the generation of radical species in water or organic solvents. Increasing concentration and decreasing pKb of amines cause the reaction equilibrium to shift toward the product polydopamine (PDA). Water-soluble and easily-removable Na SO nanowires and NaCl cubes can be used as templates to prepare different morphologies of hollow PDA structures by DA polymerization in ethanol solution. The carbonization production of PDA nanotubes at 900 °C (PDNC-900) is obtained and demonstrates electrochemical activity in the oxygen reduction reaction that is comparable to that of Pt/C.
多巴胺（DA）聚合在许多领域受到了广泛关注，然而，几乎所有的工作都局限于水溶液中，这限制了其广泛应用。本文报道了胺可以通过捕获 DA 盐酸盐和中间产物中的 H 来引发 DA 聚合，从而在水或有机溶剂中加速自由基的生成。增加胺的浓度和降低 pKb 会使反应平衡向聚多巴胺（PDA）产物方向移动。在乙醇溶液中进行 DA 聚合，可以使用水溶性和易去除的 Na2SO4 纳米线和 NaCl 立方体作为模板，制备出具有不同形态的中空 PDA 结构。在 900°C 下碳化制备的 PDA 纳米管（PDNC-900）在氧还原反应中表现出与 Pt/C 相当的电化学活性。
