Abstract
The complexation of poly(anilineboronic acid) with β-nicotinamide adenine dinucleotide (NADH) and its oxidized form, NAD+, has been investigated using electrochemical and spectroscopic techniques. At neutral pH, cyclic voltammetry of poly(anilineboronic acid) exhibits redox activity in the presence of NADH and NAD+ characteristic of self-doping. While complexation of both NADH and NAD+ with poly(anilineboronic acid) is confirmed with polarization-modulated infrared reflection absorption spectroscopic measurements, a significant difference in redox behavior is observed. 11B NMR studies suggest that the nature of species responsible for self-doping is different in the case of NAD+ and NADH, where the presence of NAD+ complex appears to facilitate the formation of the pernigraniline form of the polymer. In addition, a distinct difference in the sensitivity of open-circuit potential measurements is observed upon complexation with NADH and NAD+ as a function of the oxidation state of polymer suggesting that re...
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