Organic electrochromics are mainly based on two-step redox systems of the violene type, in which radical ions represent the long-wavelength-absorbing species. Since closed-shell systems are expected to be more persistent a new structural principle is developed that contains both the violene and the
Violene/Cyanine Hybrids as Electrochromic Systems: A New Variation of the General Structure
✍ Scribed by Siegfried Hünig; Anja Langels; Michael Schmittel; Hermann Wenner; Igor F. Perepichka; Karl Peters
- Book ID
- 102676672
- Publisher
- John Wiley and Sons
- Year
- 2001
- Tongue
- English
- Weight
- 533 KB
- Volume
- 2001
- Category
- Article
- ISSN
- 1434-193X
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✦ Synopsis
The recently disclosed general structure of violene/cyanine hybrids is extended to a new variant. The groups X and Y complete the structure for cyanines, oxonols or merocyanines in the formula (Scheme 2, at the right side). Therefore, both the addition and removal of two electrons is possible. To test [ ‡] Multistep Redox Systems, LXXI. Ϫ Part LXX: Ref. [1] Ϫ Violene/Cyanine Hybrids as Electrochromic Systems, IV. Ϫ Part III: Ref. [1] [a]
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