Title:
METHOD FOR PREPARING CYMOXANIL RATIO FLUORESCENCE PROBE BASED ON DUAL EMISSION QUANTUM DOT/SILVER NANOPARTICLE COMPLEX
Document Type and Number:
WIPO Patent Application WO/2020/087835
Kind Code:
A1
Abstract:
The present invention relates to the technical field of preparation of nanomaterials and fluorescence probes, and in particular, to a method for preparing a cymoxanil ratio fluorescence probe based on a dual emission quantum dot/silver nanoparticle complex. Dual emission carbon quantum dots and silver nanoparticles are prepared. An inner filter effect occurs between the dual emission carbon quantum dots and the dispersed silver nanoparticles, thereby causing blue fluorescence quenching of the carbon quantum dots. Cymoxanil is specifically bonded to the silver nanoparticles, resulting in aggregation of silver nanoparticles, and an inner filter effect occurs between the dual emission carbon quantum dots and the dispersed silver nanoparticles, thereby causing green fluorescence quenching of the carbon quantum dots. On this basis, a linear relationship between the intensity ratio of two fluorescence emission peaks of the carbon quantum dots and the cymoxanil molar concentration is established, and a ratio fluorescence probe for cymoxanil detection is constructed. Said probe has a simple preparation process, low preparation cost, and high product sensitivity, and can be developed into a novel cymoxanil ratio fluorescence probe for the efficient detection of cymoxanil in pesticides.
Inventors:
GUI RIJUN (CN)
JIANG XIAOWEN (CN)
JIN HUI (CN)
SUN YUJIAO (CN)
JIANG XIAOWEN (CN)
JIN HUI (CN)
SUN YUJIAO (CN)
Application Number:
PCT/CN2019/078075
Publication Date:
May 07, 2020
Filing Date:
March 14, 2019
Export Citation:
Assignee:
UNIV QINGDAO (CN)
International Classes:
C09K11/65; B82Y20/00; B82Y30/00; B82Y40/00; G01N21/64
Foreign References:
| CN109181690A | 2019-01-11 | |||
| CN103808705A | 2014-05-21 | |||
| CN107748153A | 2018-03-02 |
Other References:
LI, LIHUA ET AL.: "Simultaneous Detection of Two Tumor Markers Using Silver and Gold Nanoparticles Decorated Carbon Nanospheres as Labels", ANALYTICAL BIOCHEMISTRY, vol. 505, 5 May 2016 (2016-05-05), pages 59 - 65, XP029572461, DOI: 20190710104448A
Attorney, Agent or Firm:
QINGDAO GAOXIAO PATENT AGENCY (GENERAL PARTNERSHIP) et al. (CN)
Download PDF:
Previous Patent: DOOR BOLT-TYPE MODULE FIXING STRUCTURE AND STAGE LAMP HAVING SAME
Next Patent: DISPLAY DEVICE AND ADJUSTMENT METHOD THEREFOR
Next Patent: DISPLAY DEVICE AND ADJUSTMENT METHOD THEREFOR