Donor-Acceptor Polymer with Benzotriazole Moiety: Enhancing the Eleetrochromic Properties of the "Donor Unit"

A new donor-acceptor type polymer poly(4,7-bis(2,3-dihydrothieno[3,4-b][1,4]dioxin-5-yl)-2-dodecyl-2H-benzo [1,2,3] triazole) (PBEBT) was synthesized and its electrochromic properties were investigated. Spectroelectrochemistry studies for PBEBT showed an absorption maximum at 618 nm which is nearly identical to that of poly(ethylenedioxythiophene) (PEDOT) where polymer has a saturated blue color in its neutral state. However, PBEBT film revealed better properties than that of PEDOT in terms of optical contrast, switching time and coloration efficiency. Additionally, electrochemical and spectral results conclude that PBEBT is a both p- and n-type dopable polymer. PBEBT proved to be a superior option for electrochromic display device applications.


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Novel donor-acceptor-donor type polymers containing azobenzene group in polymer backbone chains were synthesized and their electrochromic properties were investigated. To increase the strength of the acceptor unit, fluorinated azobenzene containing donor-acceptor-donor type polymer was also synthesized. Cyclic voltammetry and spectroelectrochemistry studies showed that poly((E)-1,2-bis(4-(4-hexylthiophen-2-yl)phenyl)diazene) (P2) and poly((E)-1,2-bis(2-fluoro-4-(4-hexylthiophen-2-yl)phenyl) diazene) (P3) we...
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A new neutral state green polymer, poly (2,3-bis(4-tert-butylphenyl)-5,8-di(1H-pyrrol-2-yl) quinoxaline) (PTBPPQ) was synthesized and its potential use as an electrochromic material was investigated. Spectroelectrochemistry studies showed that polymer reveals two distinct absorption bands as expected for a donor-acceptor type polymer, at 408 and 745 nm. In addition, polymer has excellent switching properties with satisfactory optical contrasts and very short switching times. Outstanding optical contrast in ...
Syntheses of new monomeric and polymeric units and electrochemical behaviors for the use in electrochromic applications
Zaifoğlu, Nazlı Buket; Toppare, Levent Kamil; Çırpan, Ali; Department of Chemistry (2013)
4'-(Tert-butyl)-4,7-di(thiophen-2-yl)spiro[benzo[d]imidazole-2,1'-cyclohexane], 4,7-di([2,2'-bithiophen]-5-yl)-4'-(tert-butyl)spiro[benzo[d]imidazole-2,1'-cyclohexane], 4'-(tert-butyl)-4,7-bis(thieno[3,2-b]thiophen-2-yl)spiro[benzo[d]imidazole-2,1'- cyclohexane] were synthesized, electrochemically polymerized and electrochromic properties of resultant polymers were investigated. The monomers were characterized by nuclear magnetic resonance spectroscopy (1H-NMR, 13C-NMR). Cyclic voltammetry (CV) and ultravio...
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The conversion of monomer to its polymer may not be complete and residual monomer is left over in the polymeric matrix; this, in turn, affects the properties of the polymeric matrix. In this study, we wanted to compare residual monomer content of the unreinforced conventional heat-polymerized and microwave-polymerized acrylic resins with those of fiber-reinforced ones. High performance liquid chromatography was used for the determination of the residual monomer content. Statistical analysis of the results w...
Donor-acceptor polymer electrochromes with cyan color: Effect of alkyl chain length on doping processes
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A new series of donor-acceptor-donor (D-A-D) type compounds consisting of dialkyl substituted 3,4-propylenedioxythiophene and benzothiadiazole units were synthesized and polymerized chemically and electrochemically to investigate the effect of alkyl chain length on the doping process of the conjugated polymers. It was found that the alkyl chain length plays a key role on both doping processes and the solubility of the polymer. It is also noteworthy that this new series of D-A-D electrochromes transmits or r...
Citation Formats
A. Balan, E. G. Günbaş, A. Durmus, and L. K. Toppare, “Donor-Acceptor Polymer with Benzotriazole Moiety: Enhancing the Eleetrochromic Properties of the “Donor Unit”,” CHEMISTRY OF MATERIALS, pp. 7510–7513, 2008, Accessed: 00, 2020. [Online]. Available: