Issue 17, 2012
From the journal:

Journal of Materials Chemistry

Reversible iodine absorption by alkali-TCNQ salts with associated changes in physical properties†

Akira Funabiki,a   Tomoyuki Mochida,*a   Kazuyuki Takahashi,a   Hatsumi Mori,b   Takahiro Sakurai,c   Hitoshi Ohtad  and  Mikio Uruichie  

* Corresponding authors

a Department of Chemistry, Graduate School of Science, Kobe University, Kobe, Hyogo 657-8501, Japan
E-mail: tmochida@platinum.kobe-u.ac.jp

b Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan

c Center for Supports to Research and Education Activities, Kobe University, Kobe, Hyogo 657-8501, Japan

d Molecular Photoscience Research Center, Kobe University, Kobe, Hyogo 657-8501, Japan

e Institute for Molecular Science, Okazaki, Aichi 444-8585, Japan

Abstract

Alkali metal salts of 7,7′,8,8′-tetracyanoquinodimethane (TCNQ) reversibly absorb iodine forming the ternary salts M(TCNQ)I (M = Li, Na, K) and M2(TCNQ)3I2 (M = Rb). The ternary salts are also obtained by solid-state reactions of TCNQ with alkali iodides. These salts are paramagnetic and have high electrical conductivities, ∼10−1 S cm−1, for compacted pellets, whereas the alkali metal salts of TCNQ are diamagnetic insulators. The ternary salts further absorb iodine to give over-doped salts M(TCNQ)In (n ≈ 6, M = Na, K), which gradually release iodine to give M(TCNQ)I. In contrast, the solid-state reaction of F4TCNQ and sodium iodide produces Na(F4TCNQ), which does not exhibit iodine absorption.

Graphical abstract: Reversible iodine absorption by alkali-TCNQ salts with associated changes in physical properties

About
Cited by
Related
Download options Please wait...

Supplementary files

Article information

DOI
https://doi.org/10.1039/C2JM16821A
Article type
Paper
Submitted
24 Dec 2011
Accepted
24 Feb 2012
First published
19 Mar 2012

J. Mater. Chem., 2012,22, 8361-8366

Permissions

Request permissions

Reversible iodine absorption by alkali-TCNQ salts with associated changes in physical properties

A. Funabiki, T. Mochida, K. Takahashi, H. Mori, T. Sakurai, H. Ohta and M. Uruichi, J. Mater. Chem., 2012, 22, 8361 DOI: 10.1039/C2JM16821A

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Spotlight

Advertisements