Electrochemical Study of the Binding Interaction Between Dihydroxybenzenesulfonates and Viologen-Linked Polypyrrole

Electrochemistry of Conducting Polymers—Persistent Models and New Concepts

“…The colors can be tuned by introducing various substituents at the N-sites of the 4,4′-bipyridine. Viologens have first successfully been attached to the backbone of PPy − and PTh . PEDOT derivatives containing pendant viologens have been investigated by Ko et al , (Figure ).…”

Viologen-based redox-switchable anion-binding receptors

“…15,16 However, these positively charged, electron-deficient derivatives have seldom been considered as key binding and/or signaling elements in artificial molecular receptors, [17][18][19][20][21] although their photochemical and electrochemical signatures have been shown to be highly sensitive to their substitution pattern and immediate environment. [22][23][24][25][26][27][28][29][30][31][32][33] In the present article, we report the syntheses and detailed physico-chemical characterizations of viologen-based anion receptors. The halide-binding properties were estimated by-NMR, UV-visible spectroscopy and by electrochemistry.…”