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Título

A Methyl Substituted Thiophenic-TTF Donor and its Salts

AutorSilva, Rafaela A. L.; Santos, Isabel C.; Lopes, Elsa B.; Rabaça, Sandra; Galindo, Sergi; Mas Torrent, Marta ; Rovira, Concepció
Palabras claveRedox chemistry
Sulfur heterocycles
Charge transfer
Conducting materials
Transistors
Fecha de publicaciónoct-2015
EditorWiley-VCH
CitaciónEuropean Journal of Inorganic Chemistry
Resumenα-Methyldithiophene–tetrathiafulvalene (α-mDT-TTF), the first alkyl-substituted thiophene–tetrathiafulvalene electronic donor, and some of its charge-transfer salts were explored. The crystal structure of α-mDT-TTF is composed of molecular stacks aligned parallel to each other. Its cyclic voltammetry shows higher electron-donor ability than the unsubstituted analogue. This material was employed as a semiconductor in an organic field-effect transistor and showed a mobility of 4 10–4 cm2V–1 s–1. Two charge-transfer salts of this donor with [M(mnt)2]– anions (mnt = maleonitriledithiolate), M = Co and Au, were obtained by electrocrystallization; they present unusual stoichiometries: (α-mDTTTF)[ Co(mnt)2] and (α-mDT-TTF)3[Au(mnt)2]2. In the cobalt compound, the donor molecules are fully oxidized and the Co complex is dimerized; it presents semiconducting behavior (7 10–3 Scm–1). The gold compound is composed of alternating stacks of donor trimers and pairs of anions.
Versión del editorhttp://dx.doi.org/10.1002/ejic.201500806
URIhttp://hdl.handle.net/10261/128675
DOI10.1002/ejic.201500806
E-ISSN1099-0682
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