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Violene/Cyanine Hybrids as Electrochromic Systems: A New Variation of the General Structure
Author(s) -
Hünig Siegfried,
Langels Anja,
Schmittel Michael,
Wenner Hermann,
Perepichka Igor F.,
Peters Karl
Publication year - 2001
Publication title -
european journal of organic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.825
H-Index - 155
eISSN - 1099-0690
pISSN - 1434-193X
DOI - 10.1002/1099-0690(200104)2001:7<1393::aid-ejoc1393>3.0.co;2-z
Subject(s) - cyanine , electrochromism , chemistry , cyclic voltammetry , thiophene , redox , ring (chemistry) , photochemistry , electrochemistry , stereochemistry , organic chemistry , electrode , fluorescence , optics , physics
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 if this general motif is applicable to ring‐closed compounds, tetrapyridinium thiophene 4 OX 4+ was prepared, and studied using cyclic voltammetry, spectroelectrochemistry and PM3 calculations covering all five redox states of 4 .