Preparation method and application of quinolyl imidazole Pb < 2 + > fluorescent probe
By designing and synthesizing quinolinylimidazole Pb2+ fluorescent probes, the problems of limit limits and inappropriate field analysis in the prior art are solved, and the detection effects of high sensitivity, low detection limits and fast response are achieved.
CN119684261AActive Publication Date: 2025-03-25NANJING FORESTRY UNIV
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Patent Information
- Application Number
- CN202411918740.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2044-12-24
AI Technical Summary
Technical Problem
The prior art has problems such as limited detection limit, long time consumption, high cost, and unsuitable for on-site analysis when detecting lead ion Pb2+, and the effective measurement ability of lead-contaminated areas is insufficient.
Method used
A quinolinylimidazole Pb2+ fluorescent probe was prepared by molecular design. The probe was synthesized by Duff reaction and Knoevenagel condensation reaction, and had high selectivity, sensitivity and anti-interference ability.
Benefits of technology
It realizes high sensitivity, low detection limit (0.28μM) and fast response detection for Pb2+, has good anti-interference ability and application scope, and is suitable for analytical chemistry, environmental testing and other fields.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention discloses a water-soluble aggregation-induced emission quinolyl imidazole Pb < 2 + > fluorescent probe, which is prepared by the following steps: taking 2-(1, 4, 5-triphenyl-1H-imidazole-2-yl) phenol (I) as a raw material, generating 4-hydroxy-3-(1, 4, 5-triphenyl-1H-imidazole-2-yl) benzaldehyde (II) through Duff reaction, and then reacting with 1, 4, 5-triphenyl-1H-imidazole-2-yl) benzaldehyde (II) to obtain the water-soluble aggregation-induced emission quinolyl imidazole Pb < 2 + > fluorescent probe. The fluorescent probe is synthesized by carrying out Knoevenagel condensation reaction on 2, 2-dimethyl quinoline iodized salt under the catalytic action of piperidine, the chemical structural formula of the fluorescent probe is shown as a formula (III), the fluorescent probe has a specific recognition effect on Pb < 2 + > in an aqueous solution and has high sensitivity and very strong anti-interference capability, and the detection limit can be as low as 0.28 mu M; the invention provides a fluorescent probe for simply and rapidly detecting Pb < 2 + >, and the fluorescent probe has a wide application prospect in the fields of environment and biology.
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