| About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
|
| Symposium
|
Solid-state Optical Materials and Luminescence Properties
|
| Presentation Title |
A Green Chemistry Approach for the Preparation of Lanthanide Doped Alkaline-earth Fluoride Nanoparticles |
| Author(s) |
Chiara Cressoni, Nicola Da Roit, Emil Milan, Francesca Parolini, Mariapina D’Onofrio, Giacomo Lucchini, Adolfo Speghini |
| On-Site Speaker (Planned) |
Adolfo Speghini |
| Abstract Scope |
The luminescence of lanthanide ions activated alkaline-earth fluoride nanoparticles in the UV-Visible and near infrared (NIR) is of particular interest for biomedical applications, in particular for nanotheranostics. In this communication, we describe CaF2 or SrF2, nanoparticles (NPs), activated with luminescent lanthanide ions (Yb3+, Nd3+, Tm3+, Er3+), exhibiting efficient emission in the optical range. A “green chemistry” approach for their preparation has been considered, using a microwave assisted technique, permitting to prepare colloidal dispersion in aqueous media. By changing the experimental parameters, the features of the NPs can be properly tuned. We have investigated how the reaction temperature and time as well as the starting reagents concentration influence the NPs size. Preliminary results showed that the NPs size can be tuned from few to some tenths of nanometer, strongly influencing the luminescence properties. Biocompatibility of the prepared NPs have been determined by evaluating cell viability assays. |