Synthesis and characterization of donor–acceptor semiconducting polymers containing 4-(4-((2-ethylhexyl)oxy)phenyl)-4H-dithieno[3,2-b:2′,3′-d]pyrrole for organic solar cells

In this study, new donor–acceptor (D–A) conjugated polymers based on 4-(4-((2-ethylhexyl)oxy)phenyl)-4H-dithieno[3,2-b:2′,3′-d]pyrrole (EPDP) and 3,6-bis(5-bromothiophen-2-yl)-2,5-bis(2-ethylhexyl)-2,5-dihydropyrrolo[3,4-c]pyrrole-1,4-dione (BTBP) or 4,7-bis(5-bromothiophen-2-yl)benzo[c][1,2,5]thiad...

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Bibliographic Details
Published in:New journal of chemistry 2020-01, Vol.44 (39), p.16900-16912
Main Authors: Huyen Le Thi Mai, Nhung Thanh Thi Truong, Nguyen, Thiet Quoc, Bao Kim Doan, Tran, Dat Hung, Nguyen, Le-Thu T, Lee, Woosung, Jung, Jae Woong, Mai Ha Hoang, Ha Phuong Ky Huynh, Tran, Chau Duc, Ha Tran Nguyen
Format: Article
Language:eng ; jpn
Subjects:
Heterojunctions
NMR
Nuclear magnetic resonance
Photovoltaic cells
Polymers
Solar cells
Thiadiazoles
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Summary:In this study, new donor–acceptor (D–A) conjugated polymers based on 4-(4-((2-ethylhexyl)oxy)phenyl)-4H-dithieno[3,2-b:2′,3′-d]pyrrole (EPDP) and 3,6-bis(5-bromothiophen-2-yl)-2,5-bis(2-ethylhexyl)-2,5-dihydropyrrolo[3,4-c]pyrrole-1,4-dione (BTBP) or 4,7-bis(5-bromothiophen-2-yl)benzo[c][1,2,5]thiadiazole (BT) have been synthesized successfully via direct (hetero)arylation polymerization using Pd(OAc)2 and PCy3·HBF4 as a catalyst system. The obtained D–A conjugated polymers have been characterized via1H NMR, GPC, FTIR, DSC, XRD, PL and UV-Vis methods. Afterward, the D–A conjugated polymers have been applied for the fabrication of organic solar cells based on bulk-heterojunction (BHJ) structures.
ISSN:1144-0546
1369-9261
DOI:10.1039/d0nj02616f