Thiophene ended epsilon-caprolactone conducting copolymers and their electrochromic properties

2005-04-01
Kerman, I
Toppare, Levent Kamil
Yilmaz, F
Yagci, Y
epsilon-Caprolactone was polymerized by ring-opening polymerization (ROP), using thiophene methanol as the initiator and stannous octoate as the catalyst to yield poly(epsilon-caprolactone) with a thiophene end group. Homopolymerization of thiophene functionalized poly (epsilon-caprolactone) (PCL) was achieved by a constant current electrolysis method. Copolymerizations of PCL with thiophene and pyrrole were achieved in acetonitrile (ACN)-tetrabutylammonium tetrafluoroborate (TBAFB) solvent-electrolyte couple via constant potential electrolysis. Characterization of the samples were performed by nuclear magnetic resonance spectroscopy (NMR), cyclic voltammetry (CV), fourier transform infrared spectroscopy (FT-IR) and scanning electron microscopy, (SEM). Electrical conductivities were measured by the four-probe technique. Spectroelectrochemical behavior of PCL/PTh film, which was deposited on ITO-glass, was investigated by UV-Vis Spectrophotometer. Furthermore, it is found to be an anodically coloring copolymer that electrochemically sit-itches between gray-blue oxidized state and pole red reduced state, exhibiting electrochromic behavior.

Citation Formats
I. Kerman, L. K. Toppare, F. Yilmaz, and Y. Yagci, “Thiophene ended epsilon-caprolactone conducting copolymers and their electrochromic properties,” JOURNAL OF MACROMOLECULAR SCIENCE-PURE AND APPLIED CHEMISTRY, no. 4, pp. 509–520, 2005, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/40710.