NDLI: Phenylethynylene-substituted poly(triphenylamine vinylene): Post-modification synthesis and (spectro)electrochemical properties

Content Provider	Springer Nature Link
Author	Vacareanu, Loredana Virag Ivan, Teofilia Grigoras, Mircea
Copyright Year	2016
Abstract	Phenylethynylene-substituted poly(triphenylamine vinylene) were synthesised in two steps by Wittig polycondensation reaction between 4,4'-diformyl-triphenylamine and bis(4-formyl phenyl)-N,N'-iodo-phenylamine in the presence of a phosphonium salt. The iodine-substituted poly(triphenylamine vinylene) were subsequently subjected to coupling reactions with phenylacetylene obtaining conjugated new structures and properties. The structures were confirmed by C$^{13}$ and $^{1}$H nuclear magnetic resonance (NMR) and Fourier transform infrared spectroscopy (FTIR) spectroscopy. The attachment of phenylethynyl substituent to the backbone of the polymers influences the optical and electrochemical properties which were analysed by ultraviolet-visible (UV-Vis) and fluorescence spectroscopy. Having triphenylamine units along the backbone, the obtained polymers exhibit electrochemical activity and their redox characteristics were investigated by running cyclic voltammetry for polymer films deposited on working electrode surface. The electrochemical data were used to estimate their highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) energy levels and the band gap energy values (Eg). The polymers films change their colour while the potential is swept on the positive anodic domain, and this may be due to various oxidation states that undergo the polymers. The in situ UV-Vis vs. applied potential spectra were also recorded.
Starting Page	249
Ending Page	260
Page Count	12
File Format	PDF
ISSN	15985032
Journal	Macromolecular Research
Volume Number	24
Issue Number	3
e-ISSN	20927673
Language	English
Publisher	The Polymer Society of Korea
Publisher Date	2016-02-26
Publisher Place	Seoul
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	poly(triphenylamine vinylene)s UV-vis spectroscopy cyclic voltammetry spectroelectrochemical behaviour Polymer Sciences Soft and Granular Matter, Complex Fluids and Microfluidics Physical Chemistry Characterization and Evaluation of Materials Nanochemistry Nanotechnology
Content Type	Text
Resource Type	Article
Subject	Organic Chemistry Materials Chemistry Chemical Engineering Polymers and Plastics

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