An Alternating D1-A-D2-A Conjugated Ternary Copolymer Containing [1,2,5]selenadiazolo[3,4-c]pyridine Unit With Photocurrent Response Up to 1,100 nm.
D1-A-D2-A
[1,2,5]selenadiazolo[3,4-c]pyridine
near-infrared absorption
polymer photodetectors
ternary copolymer
Journal
Frontiers in chemistry
ISSN: 2296-2646
Titre abrégé: Front Chem
Pays: Switzerland
ID NLM: 101627988
Informations de publication
Date de publication:
2020
2020
Historique:
received:
11
02
2020
accepted:
17
03
2020
entrez:
16
5
2020
pubmed:
16
5
2020
medline:
16
5
2020
Statut:
epublish
Résumé
Two narrow band gap conjugated ternary copolymers comprising two electron-rich (donor, D) and one electron-deficient (acceptor, A) moieties regularly alternating along the polymer backbone were designed and synthesized. The polymers with the repeating unit in a D1-A-D2-A manner were constructed by copolymerizing a bisstannyled-D1 (D1 = n-alkyl-substituted cyclopentadithiophene) and a dibromo-monomer (Br-A-D2-A-Br, D2 = branched-alkyl-substituted cyclopentadithiophene, A =[1,2,5]selenadiazolo[3,4-c]pyridine or 5-fluorobenzo[c][1,2,5]selenadiazole) through a palladium-catalyzed Stille polymerization. This approach that enables variations in the donor fragment substituents can not only control the polymer regiochemistry but also the solubility. Two ternary copolymers exhibited absorbance up to near-infrared region along with relatively narrow band gap in the range of 1.02-1.26 eV. The polymeric photovoltaic cells based on CDTPSE/PC
Identifiants
pubmed: 32411657
doi: 10.3389/fchem.2020.00255
pmc: PMC7198836
doi:
Types de publication
Journal Article
Langues
eng
Pagination
255Informations de copyright
Copyright © 2020 Huang, Lan, Yan, Hu and Liu.
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