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Title

HOMO Stabilisation in p-Extended Dibenzotetrathiafulvalene Derivatives for Their Application in Organic Field-Effect Transistors

AuthorsYan, Geng; Pfattner, Raphael ; Campos García, Antonio ; Wei, Wang; Jeannin, Olivier; Hauser, J ürg; Puigdollers González, Joaquim; Bromley, Stefan T.; Decurtins, Silvio; Veciana, Jaume ; Rovira, Concepció ; Mas Torrent, Marta ; Shi-Xia, Liu
KeywordsDonor–acceptor
systems
Fused-ring
systems
Molecular
electronics
Semiconductors
Thin
films
Issue Date12-Aug-2014
PublisherWiley-VCH
CitationChemistry - a European Journal 20(50):16672-16679 (2014)
AbstractThree new organic semiconductors, in which either two methoxy units are directly linked to a dibenzotetrathiafulvalene (DB-TTF) central core and a 2,1,3-chalcogendiazole is fused on the one side, or four methoxy groups are linked to the DB-TTF, have been synthesised as active materials for organic field-effect transistors (OFETs). Their electrochemical behaviour, electronic absorption and fluorescence emission as well as photoinduced intramolecular charge transfer were studied. The electron-withdrawing 2,1,3-chalcogendiazole unit significantly affects the electronic properties of these semiconductors, lowering both the HOMO and LUMO energy levels and hence increasing the stability of the semiconducting material. The solution-processed single-crystal transistors exhibit high performance with a hole mobility up to 0.04 cm2 V−1 s−1 as well as good ambient stability.
Publisher version (URL)http://onlinelibrary.wiley.com/doi/10.1002/chem.201404508/epdf
URIhttp://hdl.handle.net/10261/117434
ISSN0947-6539
Appears in Collections:(ICMAB) Artículos
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