Higashi, Tomohiro published the artcileTwo Sharp Phase Change Processes of Diphenyl Viologen at a Au(111) Electrode Surface: Non-Faradaic Transition with Interplay of Ionic Adsorption of Chloride and Bromide and Faradaic One, Synthetic Route of 47369-00-6, the publication is Journal of Physical Chemistry C (2015), 119(3), 1320-1329, database is CAplus.
Two phase change processes of di-Ph viologen (dPhV) on a Au(111) electrode in KCl and KBr aqueous solutions were described using the results of voltammetric, electroreflectance (ER), and electrochem. scanning tunneling microscopic (EC-STM) measurements. Both processes exhibited sharp spikelike voltammetric responses. In KCl solution, the phase change at 0.30 V vs. Ag/AgCl/saturated KCl is a nonfaradaic order-disorder phase transition, from an ordered adlayer of dPhV dication (dPhV2+) with coadsorbed Cl– at more pos. potentials than 0.30 V to a gas-like phase at less pos. potentials. The faradaic reaction at -0.09 V is the transition from the gaslike phase to a condensed monolayer of dPhVâ?. The EC-STM images of the condensed monolayer showed stripe patterns of rows of Ï-Ï stacked dPhVâ?. Almost the same set of two processes was observed in KBr solution but not in KF solution In KF solution, although two voltammetric responses were observed, the peaks were small and broad, indicative of sluggish adsorption state changes of individual dPhV cations. Taken together, specific adsorption of coexistent anions is of critical importance for the occurrence of the sharp nonfaradaic phase transition.
Journal of Physical Chemistry C published new progress about 47369-00-6. 47369-00-6 belongs to pyridine-derivatives, auxiliary class Pyridine,Salt,Benzene,Organic ligands for MOF materials,Nitrogen containing MOF ligands,Nitrogen containing MOF ligands, name is 1,1′-Diphenyl-[4,4′-bipyridine]-1,1′-diium chloride, and the molecular formula is C22H18Cl2N2, Synthetic Route of 47369-00-6.
Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem