http://rdf.ncbi.nlm.nih.gov/pubchem/patent/LU-102740-B1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_3966ddee295e08cc6fcce4695c77f91b |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B42D25-387 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09D11-50 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K11-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09D11-17 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B42D25-382 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K11-7791 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K11-7773 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K11-77 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09D11-00 |
| filingDate | 2021-04-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-10-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_eab576c68dbfb1c0715c984cfbcc4c37 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3358f2a0b417f214d9edd414185fe128 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_eefba8f3369506f51778390f91868eb6 |
| publicationDate | 2021-10-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | LU-102740-B1 |
| titleOfInvention | Dual-mode Anti-counterfeiting Fluorescent Material and Preparation Method thereof |
| abstract | The invention relates to the field of luminescence and display technology, and discloses a dual-mode anti-counterfeiting fluorescent material and a preparation method thereof. The dual-mode anti-counterfeiting fluorescent material, the chemical composition of which is NaGdF4 :Yb/Ho/ Ce@NaYF4:X(X = Eu, Tb, Sm, Dy), presents multi-color luminescence with controllable performance under excitation of 980nm near-infrared light and 254nm ultraviolet light. It is the first time for rare earth doped and heterodoped fluoride core-shell nanoparticles to achieve efficient, multicolor and controlled dual mode luminescence. In other words, efficient multicolor up-conversion luminescence of green light, yellow light and red light can be realized under excitation of 980 nm near-infrared light, and multicolor down-conversion luminescence of red light, green light and yellow light can be realized under excitation of 254 nm ultraviolet light. Different from the previous single mode luminescent material, the dual-mode rare earth luminescent material ensures the technical requirements of fluorescence anti-counterfeiting and greatly improves the safety of anti-counterfeiting. And the material provided by the invention has good repeatability and can be mass-produced with simple preparation technology. |
| priorityDate | 2021-04-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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