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.
F. May, M. Peter, A. Hütten, L. Prodi, J. Mattay (2012). Synthesis and characterization of photoswitchable fluorescent SiO2-nanoparticles. CHEMISTRY-A EUROPEAN JOURNAL, 18, 814-821 [10.1002/chem.201102961].
Synthesis and characterization of photoswitchable fluorescent SiO2-nanoparticles
PRODI, LUCA;
2012
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
