US 11,891,553 B2 · Silver nanocluster fluorescent nanotube, a preparation method and its application in the detection of arginine

Abstract

A preparation process of atomically precise nine-nuclear silver nanoclusters (Ag9-NCs) fluorescent nanotube and its application in the detection of arginine (Arg), the fluorescent nanotube is formed by supramolecular self-assembly of Ag9-NCs and peptide (DD-5); the fluorescent nanotube prepared by the present invention has good luminescence performance due to its highly ordered structure, the quantum yield is 8.11%, and the fluorescence lifetime is 6.10 μs; after adding Arg, the highly ordered structure is destroyed, resulting in fluorescent quenching; the preparation method of the Ag9-NCs fluorescent nanotube of this invention is simple, the cost is low; at the same time, the detection method is fast and easy to observe.

Claims10

Dependent claims

A silver nanocluster (Ag9-NCs) fluorescent nanotube, characterized in that, the Ag9-NCs fluorescent nanotube is obtained by a supramolecular self-assembly process of Ag9 under an induction of DD-5;

wherein the DD-5 is formed by a polymerization of five aspartic acids;
the Ag9 is nine-nuclear Ag with Ag as core and 2-mercaptobenzoic acid (H2mba) as ligand;
and
the supramolecular self-assembly process is to mix Ag9 aqueous solution with DD-5, vortex, and let it stand for 8 hours in 20° C. incubator to obtain the Ag9-NCs fluorescent nanotube;
wherein the Ag9 aqueous solution is produced by dispersing AgNO3 and H2mba in water with ultrasonic treatment, and adding NH3·H2O;
and the Ag9-NCs fluorescent nanotube is sensitivity to L-Arg only, which is specifically used for detecting L-Arg.

3 more elements

Dependencies are inferred from the claim text.

Silver nanocluster fluorescent nanotube, a preparation method and its application in the detection of arginine

Life of this patent

Silver nanocluster fluorescent nanotube, a preparation method and its application in the detection of arginine

Life of this patent

Abstract

Claims10