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1. WO2020087835 - METHOD FOR PREPARING CYMOXANIL RATIO FLUORESCENCE PROBE BASED ON DUAL EMISSION QUANTUM DOT/SILVER NANOPARTICLE COMPLEX

Publication Number WO/2020/087835
Publication Date 07.05.2020
International Application No. PCT/CN2019/078075
International Filing Date 14.03.2019
IPC
C09K 11/65 2006.01
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
KMATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
11Luminescent, e.g. electroluminescent, chemiluminescent, materials
08containing inorganic luminescent materials
65containing carbon
B82Y 20/00 2011.01
BPERFORMING OPERATIONS; TRANSPORTING
82NANOTECHNOLOGY
YSPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE  OR TREATMENT OF NANOSTRUCTURES
20Nanooptics, e.g. quantum optics or photonic crystals
B82Y 30/00 2011.01
BPERFORMING OPERATIONS; TRANSPORTING
82NANOTECHNOLOGY
YSPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE  OR TREATMENT OF NANOSTRUCTURES
30Nanotechnology for materials or surface science, e.g. nanocomposites
B82Y 40/00 2011.01
BPERFORMING OPERATIONS; TRANSPORTING
82NANOTECHNOLOGY
YSPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE  OR TREATMENT OF NANOSTRUCTURES
40Manufacture or treatment of nanostructures
G01N 21/64 2006.01
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
62Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
63optically excited
64Fluorescence; Phosphorescence
CPC
B82Y 20/00
BPERFORMING OPERATIONS; TRANSPORTING
82NANOTECHNOLOGY
YSPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
20Nanooptics, e.g. quantum optics or photonic crystals
B82Y 30/00
BPERFORMING OPERATIONS; TRANSPORTING
82NANOTECHNOLOGY
YSPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
30Nanotechnology for materials or surface science, e.g. nanocomposites
B82Y 40/00
BPERFORMING OPERATIONS; TRANSPORTING
82NANOTECHNOLOGY
YSPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
40Manufacture or treatment of nanostructures
C09K 11/65
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
11Luminescent, e.g. electroluminescent, chemiluminescent materials
08containing inorganic luminescent materials
65containing carbon
G01N 2021/6432
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
62Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
63optically excited
64Fluorescence; Phosphorescence
6428Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects, using measuring "optrodes"
6432Quenching
G01N 21/643
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
62Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
63optically excited
64Fluorescence; Phosphorescence
6428Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects, using measuring "optrodes"
643non-biological material
Applicants
  • 青岛大学 QINGDAO UNIVERSITY [CN]/[CN]
Inventors
  • 桂日军 GUI, Rijun
  • 姜晓文 JIANG, Xiaowen
  • 金辉 JIN, Hui
  • 孙玉娇 SUN, Yujiao
Agents
  • 青岛高晓专利事务所(普通合伙) QINGDAO GAOXIAO PATENT AGENCY (GENERAL PARTNERSHIP)
  • 张世功 ZHANG, Shigong
Priority Data
201811298081.202.11.2018CN
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) METHOD FOR PREPARING CYMOXANIL RATIO FLUORESCENCE PROBE BASED ON DUAL EMISSION QUANTUM DOT/SILVER NANOPARTICLE COMPLEX
(FR) PROCÉDÉ DE PRÉPARATION D'UNE SONDE FLUORESCENTE RATIOMÉTRIQUE DU CYMOXANIL BASÉE SUR UN COMPLEXE POINTS QUANTIQUES/NANOPARTICULES D'ARGENT À DOUBLE ÉMISSION
(ZH) 基于双发射量子点/银纳米粒复合物的霜脲氰比率荧光探针的制备方法
Abstract
(EN)
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.
(FR)
La présente invention relève du domaine technique de la préparation de nanomatériaux et de sondes fluorescentes, et concerne en particulier un procédé de préparation d'une sonde fluorescente ratiométrique du cymoxanil basée sur un complexe points quantiques/nanoparticules d'argent à double émission. Des points quantiques de carbone à double émission et des nanoparticules d'argent sont préparés. Un effet de filtre interne se produit entre les points quantiques de carbone à double émission et les nanoparticules d'argent dispersées, ce qui provoque une extinction de la fluorescence bleue des points quantiques de carbone. Le cymoxanil est spécifiquement lié aux nanoparticules d'argent, conduisant à l'agrégation de nanoparticules d'argent, et un effet de filtre interne se produit entre les points quantiques de carbone à double émission et les nanoparticules d'argent dispersées, ce qui provoque une extinction de la fluorescence verte des points quantiques de carbone. Sur cette base, une relation linéaire entre le rapport d'intensité de deux pics d'émission de fluorescence des points quantiques de carbone et la concentration molaire du cymoxanil est établie, et une sonde fluorescente ratiométrique pour la détection du cymoxanil est construite. Ladite sonde présente un procédé de préparation simple, un faible coût et une sensibilité élevée au produit, et peut être développée en tant que nouvelle sonde fluorescente ratiométrique du cymoxanil, utilisée pour détecter efficacement du cymoxanil dans les pesticides.
(ZH)
本发明属于纳米材料和荧光探针的制备技术领域,具体涉及一种基于双发射量子点/银纳米粒复合物的霜脲氰比率荧光探针的制备方法。制备出双发射碳量子点和银纳米粒,采用双发射碳量子点和分散的银纳米粒之间发生内滤效应,引起碳量子点的蓝色荧光淬灭,而霜脲氰与银纳米粒发生特异性结合,导致银纳米粒聚集,双发射碳量子点和分散的银纳米粒之间发生内滤效应,引起碳量子点的绿色荧光淬灭。基于此,建立了碳量子点两个荧光发射峰强度比率与霜脲氰摩尔浓度之间的线性关系,构建出用于霜脲氰检测的比率荧光探针。该探针制备工艺简单,制备成本低,产品灵敏度高,可发展成为一种新颖的霜脲氰比率荧光探针,用于农药中霜脲氰的高效检测。
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