The first tetrathiafulvalene derivatives exhibiting second-order NLO properties
摘要:
The second order NLO properties of push-pull TTF derivatives have been studied for the first time. The effect of modifying both the acceptor and the donor moieties on the mu beta values has been studied by experimental (EFISH) and theoretical techniques. (C) 1998 Published by Elsevier Science Ltd. All rights reserved.
π Conjugation Across the Tetrathiafulvalene Core: Synthesis of Extended Tetrathiafulvalene Derivatives and Theoretical Analysis of their Unusual Electrochemical Properties
A series of extended tetrathiafulvalene (TTF) derivatives bearing one or two 1,4-dithiafulven-6-yl substitutents has been prepared. The new compounds present remarkable electrochemical singularities compared with other TTF derivatives, which are strongly affected by the nature of the substitution on the lateral heterocycle(s). This unusual electrochemical behaviour follows a square-scheme sequence
films. In the crystalline samples of three dyads, the TTF moieties formed 1D conducting columns through the dimerization of the TTF moieties and relatively strong side-by-side interactions between neighbouring stacking columns. All the neutral crystals exhibited photoinduced conductivity along the stacking direction of the TTF moieties and the crystal with the weakest dimerization and the strongest side-by-side
The first allylic alcohols derived from TTF are described. They afford new multi-stage redox assemblies (6–8), including the first system containing both EDT-TTF and ferrocene moieties (6a).
photoinduced intramolecular electron transfer and the resultant charge-separated state. Furthermore, we also reported the crystal structure analyses, photoconductivity and magnetic properties of the cationradicalsalts, 2b2M(CN)2 (M = Ag, Au), where 2b contains a 4,5-ethylenedithio-substituent. The Ag(CN)2 salt showed a semiconducting behaviour with a room temperature conductivity of 0.088 S cm−1 due to a
The first CT-complexes of covalently bound [60]Fullerene-tetrathiafulvalene (TTF) systems with tetrafluorotetracyano-p-quinodimethane (TCNQF(4)) show a semiconducting behaviour. Copyright (C) 1996 Elsevier Science Ltd