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EnglishSwitchable fluorescent silica nanoparticles have been prepared by covalently incorporating a fluorophore and a photochromic compound inside the particle core. The fluorescence can be switched reversibly between an on- and off-state via energy transfer. The particles were synthesized using different amounts of the photoswitchable compound (spiropyran) and the fluorophore (rhodamine B) in a size distribution between 98 and 140 nm and were characterized in terms of size, switching properties, and fluorescence efficiency by TEM, and UVVis and fluorescence spectroscopy.
| Titolo: | Synthesis and characterization of photoswitchable fluorescent SiO2-nanoparticles |
| Autore/i: | F. May; M. Peter; A. Hütten; PRODI, LUCA; J. Mattay |
| Autore/i Unibo: | |
| Anno: | 2012 |
| Rivista: | |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1002/chem.201102961 |
| Abstract: | Switchable fluorescent silica nanoparticles have been prepared by covalently incorporating a fluorophore and a photochromic compound inside the particle core. The fluorescence can be switched reversibly between an on- and off-state via energy transfer. The particles were synthesized using different amounts of the photoswitchable compound (spiropyran) and the fluorophore (rhodamine B) in a size distribution between 98 and 140 nm and were characterized in terms of size, switching properties, and fluorescence efficiency by TEM, and UVVis and fluorescence spectroscopy. |
| Data prodotto definitivo in UGOV: | 2013-05-06 19:35:36 |
| Appare nelle tipologie: | 1.01 Articolo in rivista |
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