TY  - JOUR
AB  - We report the synthesis of luminescent crystals based on hexagonal-phase NaYF<inf>4</inf> upconversion microrods. The synthetic procedure involves an epitaxial end-on growth of upconversion nanocrystals comprising different lanthanide activators onto the NaYF<inf>4</inf> microrods. This bottom-up method readily affords multicolor-banded crystals in gram quantity by varying the composition of the activators. Importantly, the end-on growth method using one-dimensional microrods as the template enables facile multicolor tuning in a single crystal, which is inaccessible in conventional upconversion nanoparticles. We demonstrate that these novel materials offer opportunities as optical barcodes for anticounterfeiting and multiplexed labeling applications. © 2014 American Chemical Society.
AU  - Zhang, Y
AU  - Zhang, L
AU  - Deng, R
AU  - Tian, J
AU  - Zong, Y
AU  - Jin, D
AU  - Liu, X
DA  - 2014/04/02
DO  - 10.1021/ja5013646
EP  - 4896
JO  - Journal of the American Chemical Society
PY  - 2014/04/02
SP  - 4893
TI  - Multicolor barcoding in a single upconversion crystal
VL  - 136
Y1  - 2014/04/02
Y2  - 2026/06/06
ER  -