TY - JOUR
T1 - Photochromic Solid Materials Based on Poly(decylviologen) Complexed with Alginate and Poly(sodium 4-styrenesulfonate)
AU - Sanhueza, Luis
AU - Castro, Joaquín
AU - Urzúa, Esteban
AU - Barrientos, Lorena
AU - Oyarzun-Ampuero, Felipe
AU - Pesenti, Héctor
AU - Shibue, Toshimichi
AU - Sugimura, Natsuhiko
AU - Tomita, Wataru
AU - Nishide, Hiroyuki
AU - Moreno-Villoslada, Ignacio
PY - 2015/10/15
Y1 - 2015/10/15
N2 - 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.
AB - 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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U2 - 10.1021/acs.jpcb.5b05963
DO - 10.1021/acs.jpcb.5b05963
M3 - Article
C2 - 26398329
AN - SCOPUS:84944342483
SN - 1520-6106
VL - 119
SP - 13208
EP - 13217
JO - Journal of Physical Chemistry B Materials
JF - Journal of Physical Chemistry B Materials
IS - 41
ER -