Breaking the Nd3+-sensitized upconversion nanoparticles myth about the need of onion-layered structures†
Up to now, most strategies to build efficient 800 nm-light responsive upconversion nanoparticles (UCNPs) have included onion-layered structures, in which Nd3+ is confined within the inorganic crystal structure of at least one layer. We report here an easy room-temperature modular preparation of core–shell UCNPs consisting of NaYF4:Yb,Er(Tm)/NaYF4 (UCCS) with Nd3+ anchored at the organic capping by using cucurbituril (CB) as an adhesive. Strikingly, excitation at 800 nm effectively triggers the upconversion emission of UCCS@CB@Nd nanohybrids.
- This article is part of the themed collection: Celebrating Excellence in Research: Women of Materials Science