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Electrochromic properties of some bis‐chalcone derivatives‐based nanofibers
Author(s) -
Nohut Maşlakcı Neslihan,
Biçer Abdullah,
Turgut Cin Günseli,
Uygun Öksüz Ayşegül
Publication year - 2018
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.46010
Subject(s) - nanofiber , electrochromism , materials science , electrospinning , chalcone , fourier transform infrared spectroscopy , scanning electron microscope , polymer chemistry , methyl methacrylate , chemical engineering , polymer , nuclear chemistry , organic chemistry , chemistry , nanotechnology , composite material , copolymer , electrode , engineering
Two bis‐chalcone derivatives, ( 2E,6E )‐2,6‐bis[(thiophen‐2‐yl)methylene]cyclohexanone ( C1 ) and ( 2E,6E )‐2,6‐bis[(furan‐2‐yl)methylene]cyclohexanone ( C2 )‐based electrochromic (EC) nanofibers were produced in the presence of poly(methyl methacrylate) (PMMA) as supporting polymer using the electrospinning technique. The scanning electron microscopy (SEM) and energy dispersive X‐ray spectroscopy were used to examine morphology and chemical compositions of nanofibers before and after stability test. SEM images of the obtained smooth and bead‐free nanofibers before the stability test showed that both bis‐chalcone derivatives were homogeneously dispersed on the surface of the electrospun nanofibers. Nanofibers of bis‐chalcone derivatives were characterized with Fourier‐transform infrared spectroscopy. The electrochemical and EC properties of these bis‐chalcone derivatives were investigated. The C1 ‐PMMA nanofiber‐based electrochromic device (ECD) showed higher Δ T max (41.47%) than that of the C2 ‐PMMA nanofiber‐based ECD (4.67%) during coloration/bleaching at 715 nm. The switching times for coloration and bleaching of C1 ‐PMMA nanofiber‐based ECD were found to be 4.42 and 1.12 s, respectively, and the coloration efficiency was 136.18 cm 2 /C. Repeated cyclic voltammograms and 1000 cycles of chronoamperometric measurements of the bis‐chalcone derivatives indicated that ECDs have long‐term redox stability. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018 , 135 , 46010.