The development of multi-responsive nanohybrid systems thatcombine photothermia, thermo-responsive effects and photo-catalysis is a challenging topic in the research of multifunctional materials with a large field of applications. Here, we report thefirst example of a three-components light-responsive nano-system consisting of titania, gold nanoparticles and poly-N-isopropylacrylamide (TiO2-Au-PNM). The hybrid nanostructure exhibited photothermal conversion effect upon green-light excitation and capacity to entrap methylene blue and curcumin selected as cargo models. The formation of the nanohybrid–cargo adducts, the photothermal-controlled cargo release triggered by green-light irradiation (532 nm) and mediated bylower critical solution temperature (LCST), as well as the photocatalytic effect prompted by UV-light excitation (300 nm) were demonstrated by spectroscopic techniques. The mechanism involved in the interaction of the polymeric component with the cargos was investigated by molecular modelling calculations.
Photo‐Responsive TiO2‐Gold Nanoparticle‐Polymer Nanohybrid Exhibits Photothermal, Thermo‐Release, and Photocatalytic Effects
Consoli, Grazia Maria LetiziaPrimo
;
2024
Abstract
The development of multi-responsive nanohybrid systems thatcombine photothermia, thermo-responsive effects and photo-catalysis is a challenging topic in the research of multifunctional materials with a large field of applications. Here, we report thefirst example of a three-components light-responsive nano-system consisting of titania, gold nanoparticles and poly-N-isopropylacrylamide (TiO2-Au-PNM). The hybrid nanostructure exhibited photothermal conversion effect upon green-light excitation and capacity to entrap methylene blue and curcumin selected as cargo models. The formation of the nanohybrid–cargo adducts, the photothermal-controlled cargo release triggered by green-light irradiation (532 nm) and mediated bylower critical solution temperature (LCST), as well as the photocatalytic effect prompted by UV-light excitation (300 nm) were demonstrated by spectroscopic techniques. The mechanism involved in the interaction of the polymeric component with the cargos was investigated by molecular modelling calculations.File | Dimensione | Formato | |
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ChemPhotoChem - 2024 - Consoli - Photo‐Responsive TiO2‐Gold Nanoparticle‐Polymer Nanohybrid Exhibits Photothermal (1).pdf
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Descrizione: Photo‐Responsive TiO2‐Gold Nanoparticle‐Polymer Nanohybrid Exhibits Photothermal, Thermo‐Release, and Photocatalytic Effects
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