The Interplay of Inverted Redox Potentials and Aromaticity in the Oxidized States of New π-Electron Donors: 9-(1,3-Dithiol-2-ylidene)fluorene and 9-(1,3-Dithiol-2-ylidene)thioxanthene Derivatives
作者:Samia Amriou、Changsheng Wang、Andrei S. Batsanov、Martin R. Bryce、Dmitrii F. Perepichka、Enrique Ortí、Rafael Viruela、José Vidal-Gancedo、Concepció Rovira
DOI:10.1002/chem.200501326
日期:2006.4.12
single, two-electron oxidation process. The latter is due to the aromatic structure of the thioxanthenium cation (formed on the loss of a second electron), which stabilises the dication state (10(2+)) compared with the radicalcation. This contrasts with the nonaromatic structure of the fluorenium cation of system 9. The two-electron oxidation wave in the thioxanthene derivatives is split into two separate
Functionalised 9-(1,3-dithiol-2-ylidene)thioxanthene derivatives: a C60 conjugate as an ambipolar organic field effect transistor (OFET)
作者:Samia Amriou、Aravinda Mehta、Martin R. Bryce
DOI:10.1039/b500500k
日期:——
Thioxanthene has been converted into 9-(1,3-dithiol-2-ylidene)thioxanthene derivatives which are new two-electron π-donors; an ambipolar OFET has been fabricated from the covalent 9-(1,3-dithiol-2-ylidene)thioxanthene–C60 diad system 6.
Remarkable Interplay of Redox States and Conformational Changes in a Sterically Crowded, Cross-Conjugated Tetrathiafulvalene Vinylog
作者:Samia Amriou、Igor F. Perepichka、Andrei S. Batsanov、Martin R. Bryce、Concepció Rovira、José Vidal-Gancedo
DOI:10.1002/chem.200600244
日期:2006.7.17
spectroscopy, combined with theoretical calculations performed at the B3LYP/6-31G(d) level, elucidate the interplay of the electronic and structural properties in these molecules. For compound 10, multistage redox behavior is observed: the overall electrochemical process can be represented by 10-->10(.+)-->10(2+)-->10(4+) with good reversibility for the 10-->10(.+)-->10(2+) transformations. At the tetracation
Versatile syntheses of functionalised 9,10-bis(1,3-dithiol-2-ylidene)-9,10-dihydroanthracene derivatives
作者:Martin R. Bryce、Terry Finn、Adrian J. Moore
DOI:10.1016/s0040-4039(99)00381-0
日期:1999.4
Two new synthetic approaches to functionalised derivatives of the 9,10-bis(1,3-dithiol-2-ylidene)-9,10-dihydroanthracene system are reported. A range of new derivatives bearing reactive substituents are described. (C) 1999 Elsevier Science Ltd. All rights reserved.
Molecular Saddles. 4.<sup>1</sup> Redox-Active Cyclophanes by Bridging the 9,10-Bis(1,3-dithiol-2-ylidene)-9,10-dihydroanthracene System: Synthesis, Electrochemistry, and X-ray Crystal Structures of Neutral Species and a Dication Salt
作者:Nicolas Godbert、Andrei S. Batsanov、Martin R. Bryce、Judith A. K. Howard
DOI:10.1021/jo001014q
日期:2001.2.1
(defined as Eoxpa - Eoxpc) decreases (i.e., reversibility of the oxidation process increases) in the sequence 11d > 11c > 11a > 11b as the bridging chain becomes shorter. X-ray crystal structures are reported for compounds 11a-d and the dication salt 11d2+(I3-)2.(CH2Cl2)2.25. For 11a-d the typical saddle-shaped conformation of the 9,10-bis(1,3-dithiol-2-ylidene)-9,10-dihydroanthracene moiety is observed