Ratiometric Sensing of Hydrogen Peroxide Utilizing Conformational Change in Fluorescent Boronic Acid Polymers
| Autor: | Hitoshi Nakahashi, Kanako Mizuno, Hiroshi Aoki, Yasumasa Kanekiyo, Kan Takeshima |
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| Rok vydání: | 2017 |
| Předmět: |
inorganic chemicals
Conformational change Article Subject General Chemical Engineering lcsh:Analytical chemistry 02 engineering and technology 010402 general chemistry Photochemistry 01 natural sciences Analytical Chemistry chemistry.chemical_compound Hydrogen peroxide Instrumentation chemistry.chemical_classification lcsh:QD71-142 Aqueous solution Polymer 021001 nanoscience & nanotechnology Fluorescence 0104 chemical sciences Computer Science Applications Monomer chemistry Pyrene 0210 nano-technology Boronic acid Research Article |
| Zdroj: | Journal of Analytical Methods in Chemistry, Vol 2017 (2017) Journal of Analytical Methods in Chemistry |
| ISSN: | 2090-8873 2090-8865 |
| DOI: | 10.1155/2017/7829438 |
| Popis: | We demonstrate that the copolymers containing boronic acid and pyrene units can be utilized for the fluorometric sensing of hydrogen peroxide (H2O2) in aqueous solutions. The copolymer exists in a relatively extended conformation in the absence of H2O2, whereas the polymer chain is contracted by the reaction of boronic acid moieties with H2O2 to form phenol groups. This conformational change induces aggregation of the originally isolated pyrene groups. As a result, relative intensity of excimer emission with respect to monomer emission increases with H2O2 concentration. Accordingly, the present methodology enables us to measure H2O2 by means of ratiometric fluorescence change in the range of 0–30 μM. |
| Databáze: | OpenAIRE |
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