18871-57-3Relevant academic research and scientific papers
Novel spiropyran-bipyridine derivative and application thereof to naked-eye detection for copper (II)
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Paragraph 0014; 0017, (2019/02/04)
The invention belongs to the technical fields of preparation and application of biological probe materials, aims at solving the problems of very high environmental requirement and relative complexityin operation due to poor water solubility of a current spiropyran derivative and light sensitivity of spiropyran and provides a novel spiropyran-bipyridine derivative and an application thereof to thenaked-eye detection for copper (II). The derivative is formed by additionally adding two pyridine groups on the basis of a spiropyrane structure, and a structural formula of a probe is as shown in the specification; before and after a copper ion is added into a probe molecule, the color of a solution is converted from colorlessness to pink within 60 s, the response speed is high, and no changes happen when other positive ions are added, so that the selective detection for the copper ion can be realized under the disturbance of coexisting ions of other ions. The high-polarity structure greatlyimproves the solubility of the probe in a water system. The response is rapid and obvious. After being complexed with Cu, the probe molecule can generate absorption in a visible region, so that the naked-eye detection is realized.
Synthesis and application of spiropyrane derivative probe for naked eye detection of chrome III
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Paragraph 0014, (2019/03/06)
The invention belongs to the technical fields of the preparation and application of biological probe materials and provides synthesis and application of a spiropyrane derivative probe for naked eye detection of chrome III. The spiropyrane derivative probe can be used for detecting chrome ions in a water solution and is prepared by linking benzimidazole as a chrome ion recognition group and hemicyanine as a fluorescent group through amino groups; and the chrome ions are recognized by the steps of inducing breakage of spiropyrane C-O through complexing and coordination with benzimidazole, and carrying out ring-opening fluorescence emission. The structural formula of the probe is as follows: formula (shown in the description), SP for short. The probe can be used for selectively detecting thechrome ions; and ultraviolet spectrograms of solutions acting with different metal ions show that the changes of the ultraviolet spectrograms are most obvious only after the probe is bound with the chromium ions, and the color of the solution of the chromium ions and the probe is changed from colorless to obviously red.
