Tailoring optoelectronic properties of thieno[3,2-b]thiophene comprising homopolymers via electron acceptor moieties: thienopyrrolodione, 2,1,3-benzoselenadiazole, isoindigo

Üniversitemiz öğretim üyelerinden Prof. Dr. Levent Kamil Toppare’nin yazarları arasında bulunduğu “Tailoring optoelectronic properties of thieno[3,2-b]thiophene comprising homopolymers via electron acceptor moieties: thienopyrrolodione, 2,1,3-benzoselenadiazole, isoindigo” başlıklı makale Journal of Electroanalytical Chemistry’de yayınlandı.

In this work, thieno[3,2-b]thiophene based homopolymers, namely poly(5,6-bis(octyloxy)-4,7-bis(thieno[3,2-b]thiophen-2-yl)benzo[c][1,2,5]selenadiazole; PBSeThTh), poly(5-(2-ethylhexyl)-1,3-bis(thieno[3,2-b]thiophen-2-yl)-4H-thieno[3,4-c]pyrrole-4,6(5H)-dione; PTPDThTh) and poly((E)-6,6′-bis(thieno[3,2-b]thiophen-2-yl)-1,1′-diundecyl-[3,3′-biindolinylidene]-2,2′-dione; PIIDThTh), were obtained potentiodynamically to tailor optoelectronic properties via altering electron acceptor moieties which were 5,6-bis(octyloxy)benzo[c][1,2,5]selenadiazole 5-(2-ethylhexyl)-4H-thieno[3,4-c]pyrrole-4,6(5H)-dione (TPD) and (E)-1,1′-diundecyl-[3,3′-biindolinylidene]-2,2′-dione (IID). The polymers were characterized cyclic voltammetry and spectroelectrochemistry studies. All polymers reveal ambipolar and multichromic characteristics with broad spectral absorptions, low-lying highest occupied molecular orbital (−5.69 eV, −5.59 eV, −5.60 eV), and as well as low band gap ranging from 1.58 eV to 1.86 eV. Isoindigo comprising polymer resulted in the lowest optical band gap which was 1.16 eV due to a red shift in the absorption most probably due to richer electron density and strong inter-chain interactions, structural planarity.

Göker, S., Sarigül, H., & Toppare, L. (2020). Tailoring optoelectronic properties of thieno[3,2-b]thiophene comprising homopolymers via electron acceptor moieties: Thienopyrrolodione, 2,1,3-benzoselenadiazole, isoindigo. Journal of Electroanalytical Chemistry, 873 doi:10.1016/j.jelechem.2020.114372

Makaleye erişim için: https://aip.scitation.org/doi/10.1063/5.0018386

Anahtar sözcükler:

Benzoselenadiazole; Electropolymerization; Isoindigo; Stille coupling; Thienopyrrolodione; Thieno[3,2-b]thiophene

Diğer Yazarlar:

Göker, S. (METU), Sarigül. H. (METU)