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Article

Polymer Micro and Nanoparticles Containing B(III) Compounds as Emissive Soft Materials for Cargo Encapsulation and Temperature-Dependent Applications

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BIOSCOPE Research Group, [email protected] Chemistry Department, NOVA School of Science and Technology, NOVA University Lisbon, 2829-516 Caparica, Portugal
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MatMoPol Research Group, Department of Inorganic Chemistry, Complutense University of Madrid, Ciudad Universitaria, 28040 Madrid, Spain
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CINBIO, Departamento de Química Física, Campus Universitario Lagoas Marcosende, Universidade de Vigo, 36310 Vigo, Spain
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Galicia Sur Health Research Institute (IIS Galicia Sur), SERGAS-UVIGO, 36310 Vigo, Spain
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PROTEOMASS Scientific Society, Rua dos Inventores, Madam Parque, Caparica Campus, 2829-516 Caparica, Portugal
*
Authors to whom correspondence should be addressed.
Academic Editors: Jyh-Ping Chen, Angelina Angelova and Abdelhamid Elaissari
Nanomaterials 2021, 11(12), 3437; https://doi.org/10.3390/nano11123437
Received: 6 November 2021 / Revised: 13 December 2021 / Accepted: 14 December 2021 / Published: 18 December 2021
Polymer nanoparticles doped with fluorescent molecules are widely applied for biological assays, local temperature measurements, and other bioimaging applications, overcoming several critical drawbacks, such as dye toxicity, increased water solubility, and allowing imaging of dyes/drug delivery in water. In this work, some polymethylmethacrylate (PMMA), polyvinylpyrrolidone (PVP) and poly(styrene-butadiene-styrene) (SBS) based micro and nanoparticles with an average size of about 200 nm and encapsulating B(III) compounds have been prepared via the reprecipitation method by using tetrahydrofuran as the oil phase and water. The compounds are highly hydrophobic, but their encapsulation into a polymer matrix allows obtaining stable colloidal dispersions in water (3.39 µM) that maintain the photophysical behavior of these dyes. Although thermally activated non-radiative processes occur by increasing temperature from 25 to 80 °C, the colloidal suspension of the B(III) particles continues to emit greenish light (λ = 509 nm) at high temperatures. When samples are cooling back to room temperature, the emission is restored, being reversible. A probe of concept drug delivery study was conducted using coumarin 6 as a prototype of a hydrophobic drug. View Full-Text
Keywords: organoboranes; polymer nanoparticles; drug delivery; temperature sensors organoboranes; polymer nanoparticles; drug delivery; temperature sensors
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MDPI and ACS Style

Duarte, F.; Cuerva, C.; Fernández-Lodeiro, C.; Fernández-Lodeiro, J.; Jiménez, R.; Cano, M.; Lodeiro, C. Polymer Micro and Nanoparticles Containing B(III) Compounds as Emissive Soft Materials for Cargo Encapsulation and Temperature-Dependent Applications. Nanomaterials 2021, 11, 3437. https://doi.org/10.3390/nano11123437

AMA Style

Duarte F, Cuerva C, Fernández-Lodeiro C, Fernández-Lodeiro J, Jiménez R, Cano M, Lodeiro C. Polymer Micro and Nanoparticles Containing B(III) Compounds as Emissive Soft Materials for Cargo Encapsulation and Temperature-Dependent Applications. Nanomaterials. 2021; 11(12):3437. https://doi.org/10.3390/nano11123437

Chicago/Turabian Style

Duarte, Frederico, Cristián Cuerva, Carlos Fernández-Lodeiro, Javier Fernández-Lodeiro, Raquel Jiménez, Mercedes Cano, and Carlos Lodeiro. 2021. "Polymer Micro and Nanoparticles Containing B(III) Compounds as Emissive Soft Materials for Cargo Encapsulation and Temperature-Dependent Applications" Nanomaterials 11, no. 12: 3437. https://doi.org/10.3390/nano11123437

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