Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Binuclear cadmium complex used as nitrobenzene fluorescence recognition sensor and preparation method thereof

A technology for fluorescent recognition and cadmium complexes, applied in cadmium organic compounds, chemical instruments and methods, 2/12 group organic compounds without C-metal bonds, etc., to achieve good selective recognition effect

Active Publication Date: 2018-11-06
HENAN UNIVERSITY
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The nitrogen-containing dibasic aromatic acid dinuclear cadmium complex involved in the present invention, 300ppm of nitrobenzene can make its fluorescence quenching efficiency reach 99.8%, and has the characteristics of simple and quick operation, environmental friendliness, high sensitivity and strong selectivity , this kind of binuclear cadmium complex has not been reported in the literature as a fluorescent recognition sensor for nitrobenzene

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
  • Binuclear cadmium complex used as nitrobenzene fluorescence recognition sensor and preparation method thereof
  • Binuclear cadmium complex used as nitrobenzene fluorescence recognition sensor and preparation method thereof
  • Binuclear cadmium complex used as nitrobenzene fluorescence recognition sensor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The synthesis of embodiment 1 complex:

[0024] 0.0367g (0.075mmol) 4'-(4-(3,5-dicarboxyphenoxy)phenyl-4,2':6',4"-terpyridine, 0.0215g (0.075mmol) 4,4 '-bis-(imidazolyl)biphenyl, 0.0322g (0.075mmol) Cd(ClO 4 ) 2 ·6H 2 O was dissolved in a mixed solvent of 8mL N,N-dimethylformamide and distilled water in a ratio of 1:1:1 (mass ratio), and the pH value of the mixed solution was adjusted to 5.7 at room temperature, and stirred for 30 minutes. Transfer to the polytetrafluoroethylene liner of a 25mL hydrothermal reaction kettle, react at 150°C for 72 hours, cool to room temperature naturally, and wash the product twice with distilled water (1mL / time) to obtain a light yellow block Crystalline, based on Cd(ClO 4 ) 2 ·6H 2 The calculated yield of O was 78.33%.

Embodiment 2

[0025] Example 2 Structural characterization of complexes:

[0026] The crystal structure adopts Bruker Smart CCD X-ray single crystal diffractometer at 296(2)K, and the selected size is 0.34×0.26×0.22mm 3 The bulk crystals, using graphite monochromatized MoKα rays (λ=0.07107nm) as the incident radiation source, collected diffraction points in the way of ω / 2θ scanning, the unit cell parameters were refined by the least square method, and the collected data were collected using the SADABS program The obtained data were corrected for absorption. The structure of the complex was solved by the direct method, the coordinates of non-hydrogen atoms and the anisotropy temperature factor were refined by the full-matrix least-squares method, and all calculations were completed by the SHELXTL program. The detailed crystallographic parameters are listed in Table 1. Binuclear cadmium complex [Cd 2 (DTP) 2 (BIBP) 1.5 ] crystal structure and three-dimensional pore structure such as fig...

Embodiment 3

[0029] Example 3 Fluorescent properties of complexes:

[0030] The fluorescence spectrum of the binuclear cadmium complex in N,N-dimethylacetamide (DMA) solution was measured at room temperature by F-7000FL fluorescence spectrometer. The excitation wavelength was 305nm and the emission peak was at 346nm. Compared with the dinuclear cadmium complex blank sample (without adding any organic compound to be detected), when the concentration of nitrobenzene (Nitrobenzene, NB) varies between 0ppm and 600ppm, the emission peak position of the complex does not shift, However, the intensity of its emission peak weakens significantly with the increase of the concentration of nitrobenzene. When the concentration of nitrobenzene is 300ppm, the quenching efficiency of the fluorescence emission peak of the complex can reach 99.8%, the fluorescence intensity of the complex is reduced from 2789a.u. to 36a.u., and the peak intensity is reduced to the corresponding peak of the blank sample abou...

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

PUM

No PUM Login to View More

Abstract

The invention relates to a nitrogen-containing binary aromatic acid dinuclear cadmium complex as a nitrobenzene fluorescent recognition sensor and a preparation method of the dinuclear cadmium complex. A chemical formula of the complex is [Cd2(DTP)2(BIBP)1.5], wherein DTP is 4'-(4-(3,5-dicarboxylphenoxy) phenyl-4,2':6',4''-terpyridyl, and BIBP is 4, 4'-bis(imidazolyl) biphenyl; and a three-dimensional skeleton of the dinuclear cadmium complex has a microporous structure. When the dinuclear cadmium complex is used as the nitrobenzene fluorescent recognition sensor, the position of a fluorescent emitting peak of the complex is not influenced by the nitrobenzene, the intensity of the emitting peaks of the complex is remarkably weakened as the concentration of the nitrobenzene is increased (when the concentration of the nitrobenzene is 300ppm, the quenching efficiency of the fluorescent emitting peaks of the complex is 99.8 percent, the fluorescent intensity of the complex is decreased from 2789a.u. to 36a.u., and the intensity of the emitting peaks is decreased to be about 77 times of a corresponding blank sample peak), and other tested organic compounds do not influence the fluorescent recognition detection of the nitrobenzene. The complex can be used as the nitrobenzene fluorescent recognition sensor and has a potential application prospect in the field of environmental monitoring.

Description

technical field [0001] The invention relates to the field of metal coordination compounds, in particular to a nitrogen-containing dibasic aromatic acid dinuclear cadmium used as a nitrobenzene fluorescence recognition sensor and a preparation method thereof. technical background [0002] The ordered microporous structure and good crystallization ability of metal coordination compounds can effectively ensure the binding site and contact area between its active center and guest molecules, so that it can match metal ions and anions with electronic and steric effects , Small organic molecules and other species are combined with each other to realize the functions of molecular (ion) recognition sensor, chiral resolution, drug sustained release, gas adsorption and separation, selective catalysis and gas storage. In recent years, photofunctional-oriented coordination compounds have developed into one of the research hotspots in the field of special functional materials [T.Devic et ...

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
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C07F3/08C09K11/06G01N21/64
CPCC07F3/003C07F3/08C09K11/06C09K2211/188G01N21/643G01N2021/6432
Inventor 杨浩杨立荣练晨邵彩云张武杜毅
Owner HENAN UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com