Patent · US Active

Preparation method of near-infrared silver sulfide quantum dots

US10421901B2 · kind B2 · utility

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4Claims

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Assignee

Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences · CN

Inventors

Qiangbin Wang · Suzhou, CN
Yejun Zhang · Suzhou, CN

Key dates

Filing date	Dec 1, 2015
Grant date	Sep 24, 2019
Priority date	—
Expiry date	May 6, 2037

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61K49/0013
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

Provided is a preparation method of near-infrared silver sulfide quantum dots. The silver sulfide quantum dots have hydrophilic groups derived from a mercapto-containing hydrophilic reagent attached on the surface thereof, and the hydrophilic reagent is any one of mercaptoacetic acid, mercaptopropionic acid, cysteine, cysteamine, thioctic acid and ammonium mercaptoacetate or any combination thereof. The silver sulfide quantum dots have high fluorescence yield, good fluorescence stability, good biocompatibility and uniform sizes. The preparation method has moderate reaction conditions, simple operation, short production cycle, good reproducibility and is easy to control. The silver sulfide quantum dots can be used in the application of cellular imaging and biological tissue imaging.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.