Abstract
Organic compounds have long been considered the most natural representatives of the insulating state. It started to change about fifty years ago, after the synthesis of an extraordinary organic molecule: tetracyano-p-quinodimethane (TCNQ). This molecule displays unique chemical and physical properties and give rise to a very rich class of organic conducting materials. The common feature of this conductors is high ordering of TCNQ molecules, very often in linear one-dimensional chains or columns. The physical properties of TCNQ salts are determined by two major points: 1) a restricted electronic dimensionality and 2) electronic correlations and electronphonon interactions. The aim of the paper is to review the influence of the properties and spatial structure of the cations on selected physical properties of adequate TCNQ complex salts. Some uncommon effects such as thin layers molecular organization and anions orientation, multidimensionality of hydrogen bonded networks of the salts – their types and strengths, melting of organic composites based on TCNQ and photoinduced melting of spin-Peierls phase in CT compounds are discussed. Possible applications of TCNQ salts are also mentioned.
Keywords: Organic conductors, TCNQ salts, thin films, hydrogen bonding, melting
Related Books
2-Deoxy-D-Glucose: Chemistry and Biology
Chiral Ionic Liquids: Applications in Chemistry and Technology
Basics of Organic Chemistry: A Textbook for Undergraduate Students
Advances in Organic Synthesis
The Synthetic Methods, Structures, and Properties of the Ca-C σ Bond Organocalcium Containing Compounds
Advances in Organic Synthesis
Chemistry of Bipyrazoles: Synthesis and Applications
Advances in Organic Synthesis
Advanced Nanocatalysis for Organic Synthesis and Electroanalysis
Advances in Organic Synthesis
4