Alkoxy-Substituted Anthra[1,2- c:5,6- c′]bis([1,2,5]thiadiazole) (ATz): A New Electron-Acceptor Unit in the Semiconducting Polymers for Organic Electronics

Hiroki Mori, Shuhei Nishinaga, Ryosuke Takahashi, Yasushi Nishihara

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

A new type of thiadiazole-based acceptor unit and its donor-acceptor copolymers were synthesized and characterized to develop the high-performance semiconducting polymers for organic field-effect transistors (OFETs) and organic photovoltaics (OPVs). We successfully synthesized an anthra[1,2-c:5,6-c′]bis([1,2,5]thiadiazole) (ATz) core and ATz-quaterthiophene copolymers. These copolymers possess a wide energy gap of ca. 1.8 eV and a deeper HOMO energy levels around â?5.4 eV than that of typical thiadiazole-oligothiophene copolymers. Such weak electron-accepting nature may be due to the decreased electron affinity of the ATz core by an existence of alkoxy groups with strong electron-donating ability. The ATz copolymers exhibited good semiconducting properties with hole mobility of up to 0.03 cm2 V-1 s-1 and photovoltaic response with PCE of up to 5.7%, despite the unfavorable molecular orders, thin-film structure, and/or amorphous structure.

Original languageEnglish
Pages (from-to)5473-5484
Number of pages12
JournalMacromolecules
Volume51
Issue number14
DOIs
Publication statusPublished - Jul 24 2018

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry

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