Photochromic Solid Materials Based on Poly(decylviologen) Complexed with Alginate and Poly(sodium 4‑styrenesulfonate)
Author
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Sanhueza, Luis
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Castro, Joaquín
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Urzúa, Esteban
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Barrientos, Lorena
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Oyarzún Ampuero, Felipe
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Pesenti, Héctor
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Shibue, Toshimichi
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Sugimura, Natsuhiko
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Tomita, Wataru
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Nishide, Hiroyuki
Author
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Moreno Villoslada, Ignacio
Admission date
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2015-12-16T12:58:49Z
Available date
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2015-12-16T12:58:49Z
Publication date
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2015
Cita de ítem
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J. Phys. Chem. B 2015, 119, 13208−13217
en_US
Identifier
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DOI: 10.1021/acs.jpcb.5b05963
Identifier
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https://repositorio.uchile.cl/handle/2250/135771
General note
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Artículo de publicación ISI
en_US
Abstract
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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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Patrocinador
dc.description.sponsorship
FONDECYT
3140221
1050899
FONDAP
15130011
Basal Financing Program, Conicyt
FB0807
Waseda Advanced Research Institute for Science Engineering