Synthesis and electropolymerization of 3,4-substituted quinoxaline functionalized pyrrole monomer and optoelectronic properties of its polymer

Date

2014-08-01

Author

KURTAY, GÜLBİN
AK, METİN
GÜLLÜ, Mustafa
Toppare, Levent Kamil
Ak, Mine Sulak

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We synthesized a new electroactive pyrrole functionalized monomer; 2-butyl-5,12-dihydro-2H-pyrrolo[3',4':2,3][1,4]dioxocino[6,7-b]quinoxaline (BuDQP) where beta-positions of the pyrrole ring are blocked. With the help of this strategy, formation of alpha-beta linkages during polymerization was prevented, resulting in a more regiochemically defined material. Characterization of newly synthesized compounds was performed by FTIR, GC-MS,H-1 NMR,C-13 NMR techniques and elemental analysis. Polymerization and copolymerization of BuDQP and characterization of the resulting polymers were also performed. Spectroelectrochemical investigations, switching abilities, colorimetry studies and stability experiments were performed on both for polymer and copolymer. Spectroelectrochemical analysis of P(BuDQP) reflected electronic transitions at 328 nm (pi-pi* transition) and 500 nm (polaron bands) with an electronic band gap of 2.30 eV, while copolymer (P(BuDQP-co-Py)) revealed electronic transitions at 346 nm (pi-pi* transition) and 518 nm (polaron bands) with an electronic band gap of 2.24 eV. Colorimetry studies revealed that P(BuDQP) has only two colors (blue and yellow) whereas copolymer film has six different colors in its oxidized and neutral states.

Subject Keywords

Conducting polymers, Electrochemical polymerization, Electrochromism, Spectroelectrochemistry

URI

https://hdl.handle.net/11511/34352

Journal

SYNTHETIC METALS

DOI

https://doi.org/10.1016/j.synthmet.2014:04.002

Collections

Department of Chemistry, Article

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Citation Formats

G. KURTAY, M. AK, M. GÜLLÜ, L. K. Toppare, and M. S. Ak, “Synthesis and electropolymerization of 3,4-substituted quinoxaline functionalized pyrrole monomer and optoelectronic properties of its polymer,” SYNTHETIC METALS, pp. 19–28, 2014, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/34352.