A high local dye concentration in doped silica-based core–shell nanoparticles causes self-quenching and spectral broadening (top images). This phenomenon jeopardizes the potential advantages of heavily doped systems. Förster resonance energy transfer (FRET) to an acceptor co-included in the silica led to ultrabright nanoparticles (bottom images) with a preselected narrow-band emission and a pseudo-Stokes shift of 129 nm.
Prevention of Self-Quenching in Fluorescent Silica Nanoparticles by Efficient Energy Transfer / Damiano Genovese;Sara Bonacchi;Riccardo Juris;Marco Montalti;Luca Prodi;Enrico Rampazzo;Nelsi Zaccheroni. - In: ANGEWANDTE CHEMIE. INTERNATIONAL EDITION. - ISSN 1433-7851. - STAMPA. - 52:(2013), pp. 5965-5968. [10.1002/anie.201301155]
Prevention of Self-Quenching in Fluorescent Silica Nanoparticles by Efficient Energy Transfer
GENOVESE, DAMIANO;BONACCHI, SARA;MONTALTI, MARCO;PRODI, LUCA;RAMPAZZO, ENRICO;ZACCHERONI, NELSI
2013
Abstract
A high local dye concentration in doped silica-based core–shell nanoparticles causes self-quenching and spectral broadening (top images). This phenomenon jeopardizes the potential advantages of heavily doped systems. Förster resonance energy transfer (FRET) to an acceptor co-included in the silica led to ultrabright nanoparticles (bottom images) with a preselected narrow-band emission and a pseudo-Stokes shift of 129 nm.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
