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- Title
Positional isomeric effect of nitro group substituted indoles on the electropolymerization and the capacitance performances of their polymers.
- Authors
Xiumei Ma; Zhengyou Zhu; Baoyang Lu; Jingkun Xu; Weiqiang Zhou
- Abstract
The isomers of conducting polymers usually have different properties, however, there are still few studies on the isomeric effect of conducting polymers in supercapacitors field. In this work, four isomers (4-nitroindole, 5-nitroindole, 6-nitroindole, and 7-nitroindole) were selected as the research objects to study the positional isomeric effect of nitro group substituted indoles on the electropolymerization and the capacitance performances of their polymers. The results show that the prepared poly(5-nitroindole) (5-PNI) and poly(6-nitroindole) (6-PNI) are in nanowires structure, poly(7-nitroindole) (7-PNI) is in dense structure, while poly(4-nitroindole) (4-PNI) fails to be prepared. In addition, the as-prepared 5-PNI, 6-PNI nanowires and dense 7-PNI exhibit very different electrochemical properties and capacitance performances. Taking into account the specific capacitance (364 F g-1 at 5 mV s-1), rate capability (58.5%) and cyclic stability (94% capacitance retention after 1000 cycles test), it can be concluded that 5-PNI is the most suitable electrode material in the field of supercapacitors.
- Subjects
GROUP 15 elements; ELECTRIC capacity; ELECTROPOLYMERIZATION; INDOLE compounds; POLYMERS; CONDUCTING polymers
- Publication
Journal of Applied Polymer Science, 2023, Vol 140, Issue 42, p1
- ISSN
0021-8995
- Publication type
Article
- DOI
10.1002/app.54540