Manganese doped upconversion luminescence nanoparticles
AssigneeNomadics, Inc.
InventorWei Chen
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Abstract
The present relates in general to upconversion luminescence (“UCL”) materials and methods of making and using same and more particularly, but not meant to be limiting, to Mn2+ doped semiconductor nanoparticles for use as UCL materials. The present invention also relates in general to upconversion luminescence including two-photon absorption upconversion, and potential applications using UCL materials, including light emitting diodes, upconversion lasers, infrared detectors, chemical sensors, temperature sensors and biological labels, all of which incorporate a UCL material.
Claims19
A method of using a bioconjugated upconversion luminescent nanoparticle system for biological labeling, comprising the steps of:
- delivering a bioconjugated upconversion luminescent nanoparticle system to a target,
- binding the bioconjugated upconversion luminescent nanoparticle system to the target, and
- measuring upconversion luminescence from the bioconjugated upconversion luminescent nanoparticle system bound to the target, wherein an emission wavelength of the bioconjugated upconversion luminescent nanoparticle is shorter than an excitation wavelength of the bioconjugated upconversion luminescent nanoparticle, wherein the upconversion luminescent nanoparticle of the bioconjugated upconversion luminescent nanoparticle system has the general formula (X):(Mn, R), wherein
- (X) is a host having a size less than 100 nm and is represented by the formula (M1-zNz)1-xA1-yBy where M=Zn, Cd, Pb, Ca, Ba, Sr, and Mg;
- N=Zn, Cd, Pb, Ca, Ba, Sr, and Mg;
- A=S, Se, Te, and O;
- B=S, Se, Te, and O, wherein 0≦x<1, 0<y≦1, 0<z≦1, and
- (R) is a rare earth ion.
Dependencies are inferred from the claim text.