Back to Search Start Over

Synthesis, Photophysical and Photovoltaic Properties of Conjugated Polymers Containing Fused Donor–Acceptor Dithienopyrrolobenzothiadiazole and Dithienopyrroloquinoxaline Arenes

Authors :
So Lin Hsu
Chiu Hsiang Chen
Cheng En Wu
Chain-Shu Hsu
Wei Shun Kao
Yu Ju Ho
Yen-Ju Cheng
Source :
Macromolecules. 45:2690-2698
Publication Year :
2012
Publisher :
American Chemical Society (ACS), 2012.

Abstract

We have developed two nitrogen-bridged pentacyclic donor–acceptor dithienopyrrolobenzothiadiazole (DTPBT) and dithienopyrroloquinoxaline (DTPQX) arenes where the two outer electron-rich thiophene moieties are covalently fastened with the central electron-deficient benzothiadiazole and quinoxaline cores by two nitrogen bridges. These rigid and coplanar DTPBT and DTPQX building blocks were copolymerized with fluorene (F), carbazole (C) and cyclopentadithiophene (CPDT) units via Suzuki or Stille coupling polymerization to afford six new alternating copolymers PFDTPBT, PCDTPBT, PCPDTDTPBT, PFDTPQX, PCDTPQX and PCPDTDTPQX, respectively. The nitrogen bridges not only planarize the structure to induce stronger intermolecular π–π interaction but also play an important role in determining the electronic and photophysical properties of the polymers. The device based on PFDTPQX/PC71BM (1:4, w/w) exhibited a open-circuit voltage (Voc) of 0.72 V, a short-circuit current (Jsc) of 8.62 mA/cm2 and a FF of 0.55 leading to...

Details

ISSN :
15205835 and 00249297
Volume :
45
Database :
OpenAIRE
Journal :
Macromolecules
Accession number :
edsair.doi...........1790584a323920bc46c0f13b2640989b
Full Text :
https://doi.org/10.1021/ma202764v