Photosensitizing properties of hollow microcapsules built by multilayer self-assembly of poly(allylamine hydrochloride) modified with rose Bengal

A polymeric photosensitizer based on poly(allylamine hydrochloride) (PAH) and rose Bengal (RB) was synthesized. The modified polycation PAH-RB was demonstrated to be suitable for construction of microcapsules via a layer-by-layer (LbL) assembly technique, using sodium poly(styrene sulfonate) (PSS) a...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Serrano, Mariana Paula, Rafti, Matías, Thomas, Andrés Héctor, Borsarelli, Claudio D.
Formato: Articulo
Lenguaje:Inglés
Publicado: 2019
Materias:
Química
Modified polycation PAH-RB
Microcapsules
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/123568
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-123568
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Química
Modified polycation PAH-RB
Microcapsules
spellingShingle Química
Modified polycation PAH-RB
Microcapsules
Serrano, Mariana Paula
Rafti, Matías
Thomas, Andrés Héctor
Borsarelli, Claudio D.
Photosensitizing properties of hollow microcapsules built by multilayer self-assembly of poly(allylamine hydrochloride) modified with rose Bengal
topic_facet Química
Modified polycation PAH-RB
Microcapsules
description A polymeric photosensitizer based on poly(allylamine hydrochloride) (PAH) and rose Bengal (RB) was synthesized. The modified polycation PAH-RB was demonstrated to be suitable for construction of microcapsules via a layer-by-layer (LbL) assembly technique, using sodium poly(styrene sulfonate) (PSS) as counter-polyelectrolyte and CaCO3 microcrystals as templates. After CaCO3 core removal, a stable suspension of hollow microcapsules with shells incorporating RB (HM-RB) was obtained. The spectroscopic and photophysical behavior of both PAH-RB and HM-RB in aqueous environments were studied and described in terms of dye–dye interactions and dye hydrophobicity. Only HM-RB was able to generate singlet molecular oxygen with similar efficiency to free RB in air-saturated solutions upon green light irradiation. In order to explore possible practical applications as a supramolecular photosensitizer, experiments of HM-RB irradiation in the presence of chemically and biologically relevant target molecules were carried out. It was observed that is possible to use visible light to initiate the photooxidation of biological compounds in water, with many interesting advantages compared to low-molecular-weight photosensitizers such as an enhancement of the photosensitizing effect, due to a significant reduction of dye–dye interaction, or improved reuse given the straightforward size-based separation from the reaction mixture without loss of efficiency.
format Articulo
Articulo
author Serrano, Mariana Paula
Rafti, Matías
Thomas, Andrés Héctor
Borsarelli, Claudio D.
author_facet Serrano, Mariana Paula
Rafti, Matías
Thomas, Andrés Héctor
Borsarelli, Claudio D.
author_sort Serrano, Mariana Paula
title Photosensitizing properties of hollow microcapsules built by multilayer self-assembly of poly(allylamine hydrochloride) modified with rose Bengal
title_short Photosensitizing properties of hollow microcapsules built by multilayer self-assembly of poly(allylamine hydrochloride) modified with rose Bengal
title_full Photosensitizing properties of hollow microcapsules built by multilayer self-assembly of poly(allylamine hydrochloride) modified with rose Bengal
title_fullStr Photosensitizing properties of hollow microcapsules built by multilayer self-assembly of poly(allylamine hydrochloride) modified with rose Bengal
title_full_unstemmed Photosensitizing properties of hollow microcapsules built by multilayer self-assembly of poly(allylamine hydrochloride) modified with rose Bengal
title_sort photosensitizing properties of hollow microcapsules built by multilayer self-assembly of poly(allylamine hydrochloride) modified with rose bengal
publishDate 2019
url http://sedici.unlp.edu.ar/handle/10915/123568
work_keys_str_mv AT serranomarianapaula photosensitizingpropertiesofhollowmicrocapsulesbuiltbymultilayerselfassemblyofpolyallylaminehydrochloridemodifiedwithrosebengal
AT raftimatias photosensitizingpropertiesofhollowmicrocapsulesbuiltbymultilayerselfassemblyofpolyallylaminehydrochloridemodifiedwithrosebengal
AT thomasandreshector photosensitizingpropertiesofhollowmicrocapsulesbuiltbymultilayerselfassemblyofpolyallylaminehydrochloridemodifiedwithrosebengal
AT borsarelliclaudiod photosensitizingpropertiesofhollowmicrocapsulesbuiltbymultilayerselfassemblyofpolyallylaminehydrochloridemodifiedwithrosebengal
bdutipo_str Repositorios
_version_ 1764820449797079042

Ejemplares similares