dc.creator | Pino Pinto, Juan Pablo | |
dc.creator | Oyarzún Ampuero, Felipe | |
dc.creator | Orellana, Sandra L. | |
dc.creator | Flores, Mario E. | |
dc.creator | Nishide, Hiroyuki | |
dc.creator | Moreno Villoslada, Ignacio | |
dc.date.accessioned | 2019-05-29T13:29:55Z | |
dc.date.available | 2019-05-29T13:29:55Z | |
dc.date.created | 2019-05-29T13:29:55Z | |
dc.date.issued | 2017 | |
dc.identifier | Dyes and Pigments 139 (2017) 193-200 | |
dc.identifier | 18733743 | |
dc.identifier | 01437208 | |
dc.identifier | 10.1016/j.dyepig.2016.12.005 | |
dc.identifier | https://repositorio.uchile.cl/handle/2250/168879 | |
dc.description.abstract | Aerogels made of chitosan and chondroitin sulfate, and containing 5,10,15,20-tetrakis-(4-
sulfonatophenyl)-porphyrin have been synthesized. The aerogels presented a microstructure made of
microfibers and microsheets, with porosity higher than 99%. The dispersion and state of aggregation of
the dye in the solids have been controlled with the aid of aromatic polyelectrolytes able to produce
aromatic-aromatic interactions. Thus, non-homogenous dispersions of the dye as J-aggregates and formation
of microcrystals on the microsheet surface were observed in the absence of the aromatic polymers;
on the contrary, well dispersed H-aggregates of the dye were observed in the presence of
poly(decylviologen), and well dispersed complexed monomeric dye molecules were found in the presence
of a polyketone derivatized with hystamine, thus presenting imidazolium pendant groups. The
same state of aggregation has been observed in solution for the respective complexes, highlighting the
potential of aromatic-aromatic interactions to achieve a control of the state of aggregation of dyes in
solution and further transfer to the solid state keeping their photophysical properties, and furnishing
means for a good dispersion of the dyes in solid materials. | |
dc.language | en | |
dc.publisher | Elsevier | |
dc.rights | http://creativecommons.org/licenses/by-nc-nd/3.0/cl/ | |
dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Chile | |
dc.source | Dyes and Pigments | |
dc.subject | Aromatic polycations | |
dc.subject | Aromatic-aromatic interactions | |
dc.subject | Dye aggregation | |
dc.subject | Dye in solid materials | |
dc.subject | Porphyrins | |
dc.title | Aerogels containing 5,10,15,20-tetrakis-(4-sulfonatophenyl)-porphyrin with controlled state of aggregation | |
dc.type | Artículo de revista | |