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Amine‐Triggered Dopamine Polymerization: From Aqueous Solution to Organic Solvents
Author(s) -
Liu Xinghuan,
Kang Junjie,
Wang Yiqing,
Li Wei,
Guo Heling,
Xu Liang,
Guo Xuhong,
Zhou Feng,
Jia Xin
Publication year - 2018
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.201800160
Subject(s) - polymerization , aqueous solution , amine gas treating , chemistry , electrochemistry , hydrochloride , chemical engineering , polymer chemistry , materials science , organic chemistry , polymer , electrode , engineering
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 2 SO 4 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.