High pressure investigations on TTF-TCNQ charge-transfer complexes

Bing Han; Ruixiang Ma; Haihua Wang; Mi Zhou

doi:10.1016/j.saa.2021.120541

High pressure investigations on TTF-TCNQ charge-transfer complexes

Spectrochim Acta A Mol Biomol Spectrosc. 2022 Feb 15;267(Pt 1):120541. doi: 10.1016/j.saa.2021.120541. Epub 2021 Oct 28.

Authors

Bing Han¹, Ruixiang Ma¹, Haihua Wang², Mi Zhou³

Affiliations

¹ College of Physics, Jilin University, Changchun 130012, PR China.
² College of Physics, Jilin University, Changchun 130012, PR China. Electronic address: haihua@jlu.edu.cn.
³ College of Physics, Jilin University, Changchun 130012, PR China. Electronic address: mzhou@jlu.edu.cn.

PMID: 34740004
DOI: 10.1016/j.saa.2021.120541

Abstract

Charge-transfer complexes (CTC) exhibit promising application in scientific field. A prototype CTC (TTF-TCNQ), formed by charge donating (tetrathiafulvalene) and charge accepting (tetracyanoquinodimethane) molecule, was systematically studied by Raman method. By combining Raman and synchrony X-ray diffraction (XRD), we investigated the high-pressure structures of TTF-TCNQ up to 15 GPa, and did not observe any first-order phase transition. Finally, a detailed evolution of structure for TTF-TCNQ, versus pressure, is provided, offering a new pathway to investigate the structural stability of CTC.

Keywords: Charge transfer complexs; High-pressure; Raman.

MeSH terms

Nitriles*
Phase Transition
X-Ray Diffraction

Substances

Nitriles
tetracyanoquinodimethane