SURFACE-FUNCTIONALIZED NANOPARTICLES MODULATED BY LIGHT

LUCIANA C. SCHMIDT

Puerto Vallarte

Congreso; 14th Nanotech Congress 2018 (International Topical Meeting on Nanostructured Materials and Nanotechnology).; 2018

Light-activated systems have attracted attention in the scientific community due to the advantages of triggering reactions in a controllable, efficient and economical approach.In this way, emissive semiconductor nanocrystals (quantum dots, QDs) composed of a core of CdSe or CdTe, which can be covered or not by an inorganic shell material (ZnS, ZnSe, CdS), are excellent aspirants to be modulated by light due to their intrinsic photophysical properties. QDs can be capped with organic ligands or incorporated in supramolecular materials such organogels, which are of great interest due to their potential applications in the preparation of optoelectronic devices and sensors. Moreover, the incorporation of a photochromic activator/quencher (diarylethene derivatives), could be used as an effective methodology to modulate the light-emitting properties of QDs. Furthermore, light-activated systems have important applications as photocatalysts. The design of the photocatalyst is the key step in the development of a sustainable catalytic reaction. The attachment of specific ligands in the nanocrystal surface strongly affects their properties and colloidal stability in different media. In this contribution, examples of photooxidations using different nanoparticles and light sources will be also discussed.