Journal
MACROMOLECULAR RAPID COMMUNICATIONS
Volume 39, Issue 12, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/marc.201800160
Keywords
dopamine polymerization; organic solvents; oxygen reduction reaction; water-soluble templates
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Funding
- National Natural Science Foundation of China [U1703351, 21474117, 51663021]
- Bingtuan excellent Young Scholars [CZ027205]
- Bingtuan Innovation Team in Key Areas [2015BD003]
- Yangtze River scholar research project of Shihezi University [CJXZ201401]
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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 Na2SO4 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 degrees C (PDNC-900) is obtained and demonstrates electrochemical activity in the oxygen reduction reaction that is comparable to that of Pt/C.
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