Electropolymerization of 9-Carbazole Acetic Acid in Room Temperature Ionic Liquid-Acetonitrile Mixture: Morphology, Capacitance, and Mott-Schottky Analysis
Küçük Resim Yok
Tarih
2016
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Electrochemical Soc Inc
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
In this study, the electrochemical polymerization of 9-carbazole acetic acid (CzA) monomer was synthesized in various feed ratios of room-temperature ionic liquid (RTIL), 1-butyl-3-methylimidazolium tetrafluoroborate (BMIMBF4) in acetonitrile (ACN) to investigate the effect of RTIL on morphology, impedance, capacitance, and semiconducting properties. It was observed that the low amounts of the RTIL (10 and 20%) in the mixture improve the electrochemical polymerization process compared to the RTIL-free electrolyte. Indeed, after a certain amount% BMIMBF4 which was threshold (40%), the process turned strongly unfavored. Scanning electron microscopy (SEM) was used to understand the influence of the feed ratio of BMIMBF4 to ACN on the surface structure of obtained polymer films. The surface morphology of PCzA revealed dependence on the feed ratio of BMIMBF4. Electrochemical impedance spectroscopic (EIS) experiments were performed in a pure BMIMBF4 (100%) indicated that as the feed ratio of BMIMBF4 increased, the capacitive behavior of the polymer decreased. From the Mott-Schottky analysis, the highest flatband potential (E-FB = 2.87 V) was obtained for the 40% PCzA-BMIMBF4 film. (C) 2016 The Electrochemical Society. All rights reserved.
Açıklama
Anahtar Kelimeler
Electrochemical Impedance, Polyaniline, Tetrafluoroborate, Carbazole, Electrosynthesis, Spectroscopy, Polypyrrole, Electrolyte, Pathways
Kaynak
Journal of the Electrochemical Society
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
163
Sayı
8
