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First synthesis and electronic properties of cyano(oligo)phenothiazines

✍ Scribed by Adam W. Franz; Larisa N. Popa; Thomas J.J. Müller

Publisher
Elsevier Science
Year
2008
Tongue
French
Weight
127 KB
Volume
49
Category
Article
ISSN
0040-4039

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✦ Synopsis

Oligo)phenothiazinyl nitriles were synthesized in good to very good yields from bromo (oligo)phenothiazines via the Beller cyanation protocol either under conductive or under dielectric heating using NMP as a solvent. Their electronic properties were determined by absorption and emission spectroscopy and cyclic voltammetry. Cyano(oligo)phenothiazines display large Stokes-shifts (5800-8300 cm À1 ) and substantial quantum yields (11-27%). Their reversible oxidation potentials are considerably shifted anodically due to the electron-withdrawing character of the cyano group.

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