On November 30, 1996, Kim, Sung Hoon; Bae, Jin Seok; Hwang, Seok Hwan; Gwon, Tae Sun; Doh, Myung Ki; Park, Chul published an article.Name: 1,1′-Dipropyl-[4,4′-bipyridine]-1,1′-diium bromide The title of the article was Electrochromic properties of symmetric and asymmetric viologens. And the article contained the following:
Electrochromic properties of several viologen derivatives were examined by the cyclovoltametric and chronoamperometric methods. The electrochromic properties of 1,1′-diethyl-4,4′-bipyridinium dibromide(EV), 1,1′-dipropyl-4,4′-bipyridinium dibromide(PV), 1,1′-dibutyl-4,4′-bipyridinium dibromide(BV) and 1-butyl-1′-ethyl-4,4′-bipyridinium dibromide(EBV) were studied using an propylenecarbonate/methanol solution with Bu4NBF4 as supporting electrolyte. A monomer-dimer equilibrium might explain the observation that EV and EBV cation radical solutions shows violet under an applied voltage of 1.73̃.0 V but blue under open-circuit condition. The experimental process involved the reaction of 1,1′-Dipropyl-[4,4′-bipyridine]-1,1′-diium bromide(cas: 52243-87-5).Name: 1,1′-Dipropyl-[4,4′-bipyridine]-1,1′-diium bromide
The Article related to viologen electrochromism cyclic voltammetry chronoamperometry, diethylbipyridinium dibromide electrochromism cyclic voltammetry chronoamperometry, dipropylbipyridinium dibromide electrochromism cyclic voltammetry chronoamperometry, dibutylbipyridinium dibromide electrochromism cyclic voltammetry chronoamperometry and other aspects.Name: 1,1′-Dipropyl-[4,4′-bipyridine]-1,1′-diium bromide