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Aluminum ion sensing molecular material and application thereof

A technology for sensing molecules, aluminum ions, applied in the field of chemical materials

Pending Publication Date: 2022-03-25
NAT UNIV OF SINGAPORE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Aluminum is not a carcinogen, but excessive exposure or consumption may cause disease – rickets, anemia, Alzheimer’s, Parkinson’s, breast cancer

Method used

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  • Aluminum ion sensing molecular material and application thereof
  • Aluminum ion sensing molecular material and application thereof
  • Aluminum ion sensing molecular material and application thereof

Examples

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Effect test

example 1

[0066] figure 2 Some examples of low molecular weight molecular structures of aluminum sensing molecules are shown. Among them, the smallest structure is 1, and the substituent groups on it are all H. Molecules 2 and 3 both contain a phenolic hydroxyl -OH substituent. Molecules 4 and 5 contain a chloro-Cl substituent or an amino-NH2 substituent. Molecule 6 contains a carboxy-COOH substituent. Molecule 7 contains a phenolic hydroxyl -OH substituent and a sulfonic acid -SO3H substituent.

example 2

[0068] image 3 Some examples of higher molecular weight molecular structures of aluminum sensing molecules are shown. Molecule 8 is an ortho-phenolic benzenesulfonic acid with two other substituents – chlorine substituent and 2-resorcinol-azo substituent. This group is a fluorophore that emits fluorescence in the range of Between 520–700nm. Molecule 9 is a general structure of aluminum ion sensing molecules with fluorophore substituents. Molecule 10 contains a space molecule that extends the core sensing part of o-phenolic benzenesulfonic acid, making the sensing molecule more flexible and mobile, suitable for different applications and different sensing platforms. Steric molecules can include any molecule, alkanes or aromatics, such as ethyl, benzyl, etc. In some special cases, if it is necessary to restrict the mobility of the sensing part of the core of o-phenolic benzenesulfonic acid, the benzene ring of the core of o-phenolic benzenesulfonic acid can be expanded into ...

example 3

[0070] On the circular gold electrode of the gold-coated quartz wafer of the quartz microbalance (manufacturer: MIPS Innovations Pte Ltd, Singapore), a layer of aluminum sensing molecule 14( image 3 ) film, about 100nm thick. Figure 4 Shows image 3 Film photo of the aluminum sensing molecule 14, the film thickness is about 100nm, the aluminum sensing molecular film is grown on the gold coating of the quartz crystal, and the diameter of the gold film is 6mm (left) or 12mm (right). Figure 5 A typical frequency versus time curve of Al(III) aqueous solution contacting aluminum sensing molecule 14 film is shown. As more and more aluminum ions are adsorbed on the sensing molecule 14 thin film, the resonance frequency of the quartz wafer becomes smaller. After one test, the aluminum sensing molecule can be quickly regenerated with acid and / or base. After regeneration, the second test can be started after the baseline is stabilized with deionized water. 14 Figure 6 demonstra...

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Abstract

The invention relates to the technical field of chemical materials, in particular to an aluminum ion sensing molecular material and application thereof, and compared with the prior art, the aluminum ion sensing molecular material is composed of a basic unit and four substituent groups. The basic unit consists of o-phenol benzenesulfonic acid or o-phenol benzenesulfonate radical, and a sulfonic acid group or sulfonate radical is arranged at the ortho-position of phenol hydroxyl. The substituents include-H,-X,-OH, = O,-C = OR,-OR,-COOR,-CONHR, a chromophore, a fluorophore, a spatial molecule, a polymer, an oligomer, a surface, or a combination thereof. The aluminum sensing molecules have strong affinity and strong selectivity to aluminum ions. The analyte aluminum ion species include free Al3 +, or Al (OH) 2 +, Al (OH) 2 +, Al (OH) 3, Al (OH) 4-, Al (III) coordination compounds, and mixtures thereof. The analysis medium comprises an aqueous solution, a solvent, a biological fluid and a mixture thereof. The aluminum ion sensing molecular material can be applied to color spectrum, quartz microbalance, electrode, electrochemistry, surface plasmon resonance and localized surface plasmon resonance.

Description

technical field [0001] The invention relates to the technical field of chemical materials, in particular to an aluminum ion sensing molecular material and its application. Background technique [0002] Aluminum is one of the most abundant elements in the earth's crust, and its abundance is close to that of silicon. In nature, the main form of aluminum ore is bauxite, which includes gibbsite Al(OH)3, boehmite γ-AlO(OH), and diaspore α-AlO(OH). There is also aluminum clay kaolin Al2Si2O5(OH). The aluminum isotope mainly exists in 27Al, which is close to 100%, and its 26Al isotope is very small, but 26Al / 10Be is often used in radio dating. Aluminum metal and alloys are widely used in transportation, packaging, building construction, electricity, household appliances, machinery and instruments. Many aluminum compounds are used in numerous applications, including the following: [0003] 1) Alumina: matte, lamps, catalyst carrier, desiccant, absorbent [0004] 2) Aluminum sul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/02G01N27/26C09K11/06
CPCC09K11/02G01N27/26C09K11/06C09K2211/1007
Inventor 李房有林煊豪
Owner NAT UNIV OF SINGAPORE