A Highly Conductive n-Type Coordination Complex with Thieno[3,2- b]thiophene Units: Facile Synthesis, Orientation, and Thermoelectric Properties

Kazuki Ueda; Riku Fukuzaki; Takumu Ito; Nana Toyama; Masahiro Muraoka; Toshiki Terao; Kei Manabe; Tomoyasu Hirai; Ching-Ju Wu; Shih-Ching Chuang; Shintaro Kawano; Michihisa Murata

doi:10.1021/jacs.2c07888

A Highly Conductive n-Type Coordination Complex with Thieno[3,2- b]thiophene Units: Facile Synthesis, Orientation, and Thermoelectric Properties

J Am Chem Soc. 2022 Oct 19;144(41):18744-18749. doi: 10.1021/jacs.2c07888. Epub 2022 Sep 27.

Authors

Affiliations

¹ Department of Applied Chemistry, Osaka Institute of Technology, Osaka 535-8585, Japan.
² Department of Applied Chemistry, National Yang Ming Chiao Tung University, 30010 Hsinchu, Taiwan.
³ Osaka Research Institute of Industrial Science and Technology, 1-6-50 Morinomiya, Joto-ku, Osaka 536-8553, Japan.

PMID: 36166343
DOI: 10.1021/jacs.2c07888

Abstract

An organometallic nickel complex containing thieno[3,2-b]thiophene units was designed and synthesized. Composite films of the resulting nickel complex and polyvinylidene difluoride, which can be fabricated via a simple solution process under atmospheric conditions, exhibit remarkably high n-type conductivity (>200 S cm^-1). Moreover, the thermoelectric power factor of the n-type composite film was proven to be air stable. A grazing-incidence wide-angle X-ray diffraction analysis indicated a significant impact of introducing the thieno[3,2-b]thiophene core into the backbone of the nickel complex on the orientation within the composite films.