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Synthesis and properties of higher homologs of extended TTP donors
Y. Misaki,A. Kubo,W. Matsuda,H. Fueno,K. Tanaka 한국물리학회 2006 Current Applied Physics Vol.6 No.5
A series of multi-fused extended tetrathiafulvalene (TTF), in which thiophene ring is inserted between two 1,3-dithiole rings inTTF (ThTTF-n,n = 35,7), have been synthesized. In the electronic spectra, no signicant red shift bas been observed as the num-ber of fused extended TTFs increases. Cyclic voltammograms of the ThTTF-n are composed ofn . 2 pairs of two-electron transferwaves and two pair of one-electron-transfer ones, while four pairs of single-electron-transfer waves have been observed for ThTTF-2. Molecular orbital calculation suggests the highest occupied molecular orbitals (HOMOs) of ThTTF-n spread over the molecule,while the lowest unoccupied molecular orbitals (LUMOs) are localized on the central thiophene moieties.