Multicolor Core/Shell-Structured Upconversion Fluorescent Nanoparticles
نویسندگان
چکیده
منابع مشابه
Multicolor Core/Shell-Structured Upconversion Fluorescent Nanoparticles
Near-infrared (NIR)-to-Visible upconversion fluorescent nanoparticles emit visible light upon NIR-light excitation, and are well suited for bioimaging, compared to the commonly used downconversionfluorescentmaterials.Thesenanoparticleshave advantages such as minimum photodamage to living organisms, weak background fluorescence, high detection sensitivity, and high light-penetration depth in tis...
متن کاملMulticolor Upconversion Nanoparticles for Protein Conjugation
We describe the preparation of monodisperse, lanthanide-doped hexagonal-phase NaYF4 upconverting luminescent nanoparticles for protein conjugation. Their core was coated with a silica shell which then was modified with a poly(ethylene glycol) spacer and N-hydroxysuccinimide ester groups. The nanoparticles were characterized by transmission electron microscopy, Raman spectroscopy, X-ray diffract...
متن کاملLanthanide-doped LiYF4 nanoparticles: Synthesis and multicolor upconversion tuning
We report the synthesis of tetragonal-phase LiYF4 nanoparticles doped with upconverting lanthanide ions. The nanoparticles have been characterized by XRD, TEM, and luminescence decay studies. The size of the as-synthesized LiYF4 nanoparticles can be tuned by varying the precursor ratio of F to lanthanide ions. Passivated by oleic acid ligands, the LiYF4 nanoparticles can be readily dispersed in...
متن کاملMulticolor barcoding in a single upconversion crystal.
We report the synthesis of luminescent crystals based on hexagonal-phase NaYF4 upconversion microrods. The synthetic procedure involves an epitaxial end-on growth of upconversion nanocrystals comprising different lanthanide activators onto the NaYF4 microrods. This bottom-up method readily affords multicolor-banded crystals in gram quantity by varying the composition of the activators. Importan...
متن کاملMulticolor fluorescent differential display.
Differential display and DNA microarray have emerged as the two most popular methods for gene expression profiling. Here, we developed a multicolor fluorescent differential display (FDD) method that combines the virtues of both differential display in signal amplification and DNA microarray in signal analysis. As in DNA microarray, RNA samples being compared can be labeled with either a red or ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Advanced Materials
سال: 2009
ISSN: 0935-9648
DOI: 10.1002/adma.200990179