Sonochemical Synthesis of Optically Tuneable Conjugated Polymer Nanoparticles
Bellacanzone, Christian (Institut Català de Nanociència i Nanotecnologia)
Roscini, Claudio (Institut Català de Nanociència i Nanotecnologia)
Ruiz Delgado, María del Carmen (Universidad de Málaga. Departamento de Química Física)
Ponce Ortiz, Rocío (Universidad de Málaga. Departamento de Química Física)
Ruiz-Molina, Daniel (Institut Català de Nanociència i Nanotecnologia)

Data:	2018
Resum:	The development of novel and simple methodologies for the obtaining of semiconductive polymer nanoparticles with fine-tuned optical properties represents nowadays a challenging research area as it involves a simultaneous chemical modification and nanostructuration of the polymer. Here, starting from poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene], this objective is achieved with the one-pot synthesis of oligomers with tunable conjugation length and their nanostructuration, employing a miniemulsion method. Ultrasound irradiation of heterogeneous mixtures leads to the formation of hypochlorous acid that disrupts the electronic conjugation through polymer chain cleavage. Moreover, control over the degree of the electronic conjugation of the oligomers, and therefore of the optical properties, is achieved simply by varying the polymer concentration of the initial solution. Finally, the presence of surfactants during the sonication allows for the formation of nanoparticles with progressive spectral shift of the main absorption (from λ = 476 to 306 nm) and emission bands (from λ = 597 to 481 nm). The integration of conducting polymer nanoparticles into polymeric matrices yields self-standing and flexible fluorescent films.
Ajuts:	Ministerio de Economía y Competitividad SEV-2013-0295 Ministerio de Economía y Competitividad MAT2015-70615-R
Drets:	Tots els drets reservats.
Llengua:	Anglès
Document:	Article ; recerca ; Versió sotmesa a revisió
Matèria:	Fluorescent nanoparticles ; MEH-PPV ; Nanoemulsions ; Semiconducting polymers ; Sonochemistry
Publicat a:	Particle & particle systems characterization, Vol. 35, Issue 2 (February 2018) , art. 1700322, ISSN 1521-4117

DOI: 10.1002/ppsc.201700322

Preprint 17 p, 682.0 KB

El registre apareix a les col·leccions:
Documents de recerca > Documents dels grups de recerca de la UAB > Centres i grups de recerca (producció científica) > Ciències > Institut Català de Nanociència i Nanotecnologia (ICN2)
Articles > Articles de recerca
Articles > Articles publicats