Indoline Dye-Coupled Polyviologen: Its Electrochemical Property and Electropolymerization

Sano, Naoki; Suzuki, Miu; Tomita, Wataru; Oyaizu, Kenichi; Nishide, Hiroyuki

doi:10.7567/jjap.51.10ne17

Cited by 1 publication

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“…N , N ′-Disubstituted-4,4′-bipyridinium derivatives, also known as viologens, have been widely investigated due to their interesting photophysical − and electrochemical properties, − with potential technological applications in rechargeable batteries, solar cells, − and electrochromic devices. , In this context, great interest has been devoted on the totally reversible redox process between the pale yellow dication and the deep violet radical cation states . Related polymeric viologen derivatives can be easily prepared by the Menshuktin reaction, mixing equimolar amounts of 4,4′-bipyridine and desired dihaloalkanes. , The resulting polymers are dicationic in their natural state, thus also water-soluble.…”

Section: Introductionmentioning

confidence: 99%

Photochromic Solid Materials Based on Poly(decylviologen) Complexed with Alginate and Poly(sodium 4-styrenesulfonate)

Sanhueza¹,

Castro²,

Urzúa³

et al. 2015

J. Phys. Chem. B

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Photochromic solid materials based on the cationic polymer poly(decylviologen) are reported. The solids were obtained by freeze-drying colloidal suspensions of nanocomplexes obtained by mixing aqueous solutions of the polycation with different solutions of polyanions such as poly(sodium 4-styrenesulfonate) or sodium alginate, at a cationic/anionic polymeric charge ratio of 0.7. The photochromic responses of the solid materials fabricated with alginate as complementary charged polyelectrolyte of the cationic polyviologen are faster than those of the solid materials fabricated with poly(sodium 4-styrenesulfonate), achieving coloration kinetics in the order of minutes, and discoloration kinetics in the order of hours for the former. Aromatic–aromatic interactions between the latter polyanion and the polyviologen may stabilize the dicationic form of the viologen derivative, increasing the necessary energy to undergo photoreduction, thus decreasing the reduction kinetics.

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