Chemistry Letters
Online ISSN : 1348-0715
Print ISSN : 0366-7022
Letter
Preparation, Properties, and X-ray Structures of Bis(10-methyl-9-methyleneacridan)-type Electron Donors with a Thiophene, Bithiophene, or Terthiophene Skeleton: Redox Switching of Thiophene–Thienoquinoid Structure Accompanied by UV–vis–NIR Electrochromic Response
Takanori SuzukiYuuki HoshiyamaKazuhisa WadaYusuke IshigakiYouhei MiuraHidetoshi KawaiRyo KatoonoKenshu FujiwaraTakanori Fukushima
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Volume 42 (2013) Issue 9 Pages 1004-1006

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Abstract

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.

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© 2013 The Chemical Society of Japan
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