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Chemistry Letters
Vol. 42 (2013) No. 9 P 1004-1006




The newly designed title dyes 13 have a thiophene-type π-skeleton, to which two methyleneacridan subunits are attached as electron-donating end groups. They undergo reversible one-wave 2e-oxidation to the corresponding dications containing a thienoquinoid moiety. The redox and spectral properties can be modified by changing the π-skeleton, and bithiophene 2 and terthiophene 3 can serve as new entries of UV–vis–NIR electrochromic materials.

Copyright © 2013 The Chemical Society of Japan

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