Preparation of nano-polyhedral-oligomeric-silsesquioxane-sol based on aggregation induced emission effect and research on fluoride ion identification mechanism

被引：2

作者：

Li, Ming ^{[1
,2
]}

Fu, Zhengquan ^{[1
]}

Wang, Di ^{[1
]}

Wei, Shuangying ^{[1
]}

Wang, Chenyu ^{[1
]}

Li, Jian ^{[1
]}

机构：

[1] Northeast Forestry Univ, Key Lab Biobased Mat Sci & Technol, Minist Educ, Harbin 150040, Peoples R China

[2] Sun Yat Sen Univ, Sch Chem, GD HPPC Lab, Key Lab Polymer Composite & Funct Mat,Minstry Educ, Guangzhou 510275, Peoples R China

来源：

JOURNAL OF MOLECULAR LIQUIDS | 2022年 / 366卷

基金：

中国国家自然科学基金;

关键词：

POSS; TD-DFT calculations; Fluorescent sensor; Identification of F; Action mechanism of fluorine on silicon; FLUORESCENCE; SENSOR; PROBE;

D O I：

10.1016/j.molliq.2022.120315

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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.

引用

页数：10

共 40 条

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