Elaboration of low-band-gap π-conjugated systems based on thieno[3,4-b]pyrazines

Nathalie Cheminet (1) , Sandra Nogueira , Oumayma Benaqqa , Zakaria El Malki , Mohamed Bourass , Simon Cassegrain , Mohammed Hamidi (2) , Mohammed Bouachrine (3) , Jean-Marc Sotiropoulos (4) , Karinne Miqueu (4) , Thibaut Jarrosson (1) , Claude Niebel (1) , Jean-Pierre Lère-Porte (1) , Françoise Serein-Spirau (1)

1 ICGM - Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier
2 Unite Chim Theor Appl
3 Unite Rech Macromol & Modelisation
4 IPREM - Institut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux

In order to understand the electronic contribution of the thienopyrazine building block on the electronic properties of π-conjugated systems, small molecules containing thiophene and thienopyrazine moieties are synthesized and jointly studied by theoretical (DFT) and experimental methods (UV-Vis, UPS). Taking advantages of these preliminar attractive results, four low band gap extended structures have been elaborated on the base of Donor-Acceptor-Donor sequences (DAD); these elongated π-conjugated molecules exhibit noticeable electronic and absorption properties spreading from the near UV to NIR regions.

Mots clés: organic electronics; POC-17; low band-gap; π-conjugated systems

Domaines: Chimie analytique; Chimie théorique et/ou physique; Polymères; Matériaux

Nathalie Cheminet, Sandra Nogueira, Oumayma Benaqqa, Zakaria El Malki, Mohamed Bourass, et al.. Elaboration of low-band-gap π-conjugated systems based on thieno[3,4-b]pyrazines. Pure and Applied Chemistry, 2020, pp.353. ⟨10.1515/pac-2018-1009⟩. ⟨hal-02270781⟩