Symmetrically Disubstituted Bithiophene Derivatives of 1,3,4-Oxadiazole, 1,3,4-Thiadiazole, and 1,2,4-Triazole – Spectroscopic, Electrochemical, and Spectroelectrochemical Properties | Sciact - CRIS-система Института катализа

Symmetrically Disubstituted Bithiophene Derivatives of 1,3,4-Oxadiazole, 1,3,4-Thiadiazole, and 1,2,4-Triazole – Spectroscopic, Electrochemical, and Spectroelectrochemical Properties Научная публикация

Журнал

The Journal of Physical Chemistry C
ISSN: 1932-7447 , E-ISSN: 1932-7455

Вых. Данные

Год: 2014, Том: 118, Номер: 43, Страницы: 25176-25189 Страниц : 14 DOI: 10.1021/jp507838c

Ключевые слова

Conjugated polymers; Crystal defects; Cyclic voltammetry; Electron affinity; Electronic properties; Ionization potential; Quantum chemistry; Spectroelectrochemistry; Thiophene

Авторы

Kurowska Aleksandra ¹ , Kostyuchenko Anastasia S. ^2,3 , Zassowski Pawel ¹ , Skorka Lukasz ⁴ , Yurpalov Viacheslav L. ² , Fisyuk Alexander S. ^2,3 , Pron Adam ⁴ , Domagala Wojciech ¹

Организации

1	Department of Physical Chemistry and Technology of Polymers, Silesian University of Technology, Marcina Strzody 9, 44-100 Gliwice, Poland
2	Department of Organic Chemistry, Omsk F. M. Dostoevsky State University, Mira ave. 55A, Omsk 644077, Russian Federation
3	Laboratory of New Organic Materials, Omsk State Technical University, Mira ave. 11, Omsk 644050, Russian Federation
4	Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warszawa, Poland

Electrochemical and spectroelectrochemical properties of a series of new penta-ring donor–acceptor compounds, comprising 1,3,4-oxadiazole, 1,3,4-thiadiazole, and 1,2,4-triazole central ring, symmetrically connected to substituted bithiophenes, were investigated. Aromaticity and electrophilic–nucleophilic traits of the aza-heterocyclic units, fostering inductive and resonance effects that translate to conjugation enhancement and electron (de)localization, were found a major factor determining the key electron properties of ionization potential (IP) and electron affinity (EA) of these molecules. Replacing the alkyl thiophene substituent for an alkoxy one afforded certain control over the two parameters as well. All studied compounds were found to undergo electrochemical polymerization giving p- and n-dopable products, featuring good electrochemical reversibility of their oxidative doping process, as demonstrated by cyclic voltammetry and UV–vis–NIR, EPR spectroelectrochemistry. While electropolymerization of entities differing in the heterodiazole unit was found to conserve the EA value, the IP parameter of polymerization products was found to decrease by 0.6–0.7 eV, affording an asymmetric narrowing of the frontier energy levels gap. Aided by quantum chemical computations, the effects of structure tailoring of the investigated systems are rationalized, pointing to conscious ways of shaping the electronic properties of thiophene class polymers using synthetically convenient heterodiazole π-conjugated units.

Kurowska A. , Kostyuchenko A.S. , Zassowski P. , Skorka L. , Yurpalov V.L. , Fisyuk A.S. , Pron A. , Domagala W.
Symmetrically Disubstituted Bithiophene Derivatives of 1,3,4-Oxadiazole, 1,3,4-Thiadiazole, and 1,2,4-Triazole – Spectroscopic, Electrochemical, and Spectroelectrochemical Properties
The Journal of Physical Chemistry C. 2014. V.118. N43. P.25176-25189. DOI: 10.1021/jp507838c WOS Scopus OpenAlex

Поступила в редакцию:	3 авг. 2014 г.
Принята к публикации:	1 окт. 2014 г.
Опубликована online:	17 окт. 2014 г.
Опубликована в печати:	30 окт. 2014 г.

Web of science:	WOS:000344135500044
Scopus:	2-s2.0-84949116422
OpenAlex:	W2323999038

БД	Цитирований
Scopus	41
OpenAlex	39
Web of science	40