期刊
JOURNAL OF MOLECULAR LIQUIDS
卷 366, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.molliq.2022.120315
关键词
POSS; TD-DFT calculations; Fluorescent sensor; Identification of F; Action mechanism of fluorine on silicon
资金
- National Natural Science Foundation of China [GN:31770593]
- Qingjiang Pan and Key Laboratory of Functional Inor-ganic Material Chemistry of Education Ministry, School of Chem-istry and Materials Science, Heilongjiang University
Fluoride plays a vital role in physiological processes, but excess fluoride ions can cause health issues. Therefore, it is crucial to accurately identify fluoride. Researchers have successfully developed a new method for fluoride identification by functionalizing octa(aminopropyl) polyhedral oligomeric silsesquioxane with aromatic luminogens.
Fluoride plays an indispensable role in physiological process, it is widely used in the fields of toothpaste and medicine, etc. However, excess fluoride ions can cause acute gastritis, malignant skeletal fluorosis and kidney problems. Consequently, the accurate identification of fluoride is of great importance. Therefore, we functionalized octa (aminopropyl) polyhedral oligomeric silsesquioxane (OAP-POSS) (T8) with traditional aggregation caused quenching (ACQ) aromatic luminogens to obtain phthalic-anhydride-OAP-POSS (PAOP), which not only solves the problem of ACQ, but also can be used to identify fluorine ions. The identification limit was 1.27 x 10(-5) mol/L in THF(tetrahydrofuran) and 5.86 x 10(-4 )mol/L in DMSO (dimethyl sulfoxide). Moreover, through theoretical calculation (DFT and TD-DFT) and experiment, we further studied the action mechanism of fluorine on silicon and explored the possibility of F -encapsulated in POSS cage. (C) 2022 Elsevier B.V. All rights reserved.
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