UV-Vis DRS and photoluminescence (PL) spectroscopy, combined with excitation selective Raman spectroscopy, allow us to understand the main optical and vibrational properties of a metal-organic MOF-5 framework. A O2-Zn2+--> O-Zn+ ligand to metal charge transfer transition (LMCT) at 350 nm, testifies that the Zn4O13 cluster behaves as a ZnO quantum dot (QD). The organic part acts as a photon antenna able to efficiently transfer the energy to the inorganic ZnO-like QD part, where an intense emission at 525 nm occurs.
Electronic and vibrational properties of a Mof-5 metal-organic framework: zno quantum dot behaviour
BORDIGA, Silvia;LAMBERTI, Carlo;RICCHIARDI, Gabriele;REGLI, LAURA;BONINO, Francesca Carla;DAMIN, Alessandro Ali;ZECCHINA, Adriano
2004-01-01
Abstract
UV-Vis DRS and photoluminescence (PL) spectroscopy, combined with excitation selective Raman spectroscopy, allow us to understand the main optical and vibrational properties of a metal-organic MOF-5 framework. A O2-Zn2+--> O-Zn+ ligand to metal charge transfer transition (LMCT) at 350 nm, testifies that the Zn4O13 cluster behaves as a ZnO quantum dot (QD). The organic part acts as a photon antenna able to efficiently transfer the energy to the inorganic ZnO-like QD part, where an intense emission at 525 nm occurs.
File in questo prodotto:
Non ci sono file associati a questo prodotto.
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
