Ultrasound-induced transformation of fluorescent organic nanoparticles from a molecular rotor into rhomboidal nanocrystals with enhanced emission
Entity
UAM. Departamento de Química OrgánicaPublisher
The Royal Society of ChemistryDate
2014-11-04Citation
10.1039/C4CC05531D
Chemical Communications 50.85 (2014): 12955-12958
ISSN
1359-7345 (print); 1364-548X (online)DOI
10.1039/C4CC05531DFunded by
Financial support from Spanish Ministry of Economy and Competitivity, MICINN (CTQ-2011-24187/BQU), MIUR through FIRB program (contract no. RBFR10DAK6), ERC Advanced Grant 2012 (number 320951)Project
Gobierno de España. CTQ-2011-24187/BQUEditor's Version
http://dx.doi.org/10.1039/C4CC05531DSubjects
Fluorescent organic nanoparticle; Nanocrystal; Nanoparticle; Unclassified drug; 1,2-benzenedicarbonitrile; Fluorescent dye; Nitrile; QuímicaRights
© the Partner Organisations 2014; © The Royal Society of Chemistry 2014Abstract
Fluorescent organic nanoparticles (FONs) based on aggregation-induced emission (AIE) are receiving increasing attention owing to their simple preparation, enhancedoptical properties, and a wide range of applications. Therefore, finding simple methods to tune the structural and emissive properties of FONs is highly desirable. In this context, we discuss the preparation of highly emissive, amorphous AIE spherical nanoparticles based on a structurally-simple molecular rotor and their sonochemicaltransformation into rhomboidal nanocrystals. Interestingly, the ultrasound-induced modification of the morphology is accompanied by a remarkable enhancement in the stability and emission of the resulting nanocrystals. Detailed characterization of both spherical and rhomboidal nanoparticles was carried out by means of several microscopic, crystallographic, and spectroscopic techniques as well as quantum mechanical calculations. In a nutshell, this work provides a unique example of the ultrasound-induced switching of morphology, stability, and emission in FONs
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Google Scholar:Koenig, Matthias
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Torres Cebada, Tomás
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Barone, Vincenzo
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Brancato, Giuseppe
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Guldi, Dirk M.
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Bottari, Giovanni
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