Unlock instant, AI-driven research and patent intelligence for your innovation.
cspbbr for detection of omethoate 3 Perovskite quantum dot-molecularly imprinted fluorescent sensor and its preparation method
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A technology of fluorescent sensor and omethoate, which is applied in the field of analytical chemistry to achieve the effects of high yield, high efficiency and high sensitivity
Active Publication Date: 2021-01-26
SOUTH CHINA NORMAL UNIVERSITY
View PDF5 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
Although CsPbBr 3 Perovskite quantum dots have high photoluminescence (PL) quantum yields (QYs), CsPbBr 3 Stability of perovskite quantum dots in water and oxygen remains a major challenge
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
preparation example Construction
[0057] Such as figure 1 Shown, the invention provides a kind of CsPbBr for detecting omethoate 3 A method for preparing a perovskite quantum dot-molecularly imprinted fluorescent sensor, comprising the following steps:
[0058] S1: Preparation of APTES-capped CsPbBr 3 PerovskiteQuantum Dots
[0059] Add 3-aminopropyltriethoxysilane (APTES) to cesium carbonate (Cs 2 CO 3 ), Octadecene (ODE), PbBr 2 , oleic acid (0A) and oleylamine (OAm) mixture, at a temperature of 20 ° C, a humidity of 40%, under air conditions, stirred for 3 hours, hydrolyzed, purified, and prepared APTES-capped CsPbBr 3 Perovskite quantum dots;
[0061] Template molecule omethoate (OMT), octadecene, APTES-capped CsPbBr obtained in step S1 3 The perovskite quantum dots and the remaining 3-aminopropyltriethoxysilane (APTES) from the reaction in step S1 were mixed and stirred for 30 minutes, then a crosslinking...
Embodiment 1
[0068] (1) Preparation of APTES-capped CsPbBr 3 Perovskite Quantum Dots
[0069] 1) Join 0.32g cesium carbonate, 1ml oleic acid (90%, OA), 12ml octadecene (90%, ODE) in the 50ml three-neck round bottom flask, vacuum degas 10 minutes on Schlenk line, in Heating to 120°C under vacuum conditions for 1 hour, then heating to 150°C under the condition of feeding nitrogen gas, and constant temperature for 2 hours until the solution is clear to obtain a cesium oleate solution;
[0070] 2) Mix 10ml octadecene (90%, ODE) and 0.376mmol PbBr 2 Load it into a 50ml three-necked round-bottomed flask, degas it under vacuum for 10 minutes, and dry it under vacuum for 1 hour at a temperature of 120°C. , 100 μl oleylamine (80%-90%, OAm) and 1ml 3-aminopropyltriethoxysilane (APTES) were slowly added to the flask, and the solution was clarified and heated to 160°C;
[0071] 3) Preheat the cesium oleate solution prepared in step 1) to 100°C, quickly inject 1ml of the preheated cesium oleate soluti...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
technical field [0001] The invention belongs to the field of analytical chemistry, in particular to a CsPbBr for detecting omethoate 3 Perovskitequantum dot-molecularly imprinted fluorescent sensor and its preparation method. Background technique [0002] Omethoate detection is a hotspot in the research and development of food safety at home and abroad. At present, gas chromatography, liquid chromatography, immunoassay, gas chromatography-mass spectrometry (GC-MS) and liquid chromatography-mass spectrometry (LC-MS) are mainly used. method. Chromatography-mass spectrometry has high detection sensitivity but is expensive. Chromatography has a high detection limit and cannot meet the actual needs of trace pesticide residues and export trade detection, so enrichment is usually required before analysis. The pretreatment methods currently used mainly include solid-phase extraction, liquid-liquid extraction, matrix-dispersed solid-phase extraction, solid-phase microextraction, ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to View More