A porous tetraphenylethylene-based polymer for fast-response fluorescence sensing of Fe(III) ion and nitrobenzene. (February 2020)

• Record Type: Journal Article
• Authors: Zheng, Yingting; Wang, Hailong; Jiang, Jianzhuang
• Is Part Of: Dyes and pigments. Volume 173(2020)
• Publication Date: 2020-02
• Subjects: Tetraphenylethylene-based polymer -- Porous materials -- Fast-response Fe(III) sensing -- Nitrobenzene sensor; Dyes and dyeing -- Periodicals; Pigments -- Periodicals; 667.2
• DOI: 10.1016/j.dyepig.2019.107929
• Languages: English
• ISSNs: 0143-7208

Abstract

Abstract: A fluorescent porous tetraphenylethylene-based organic polymer (PTOP ) was constructed by the reaction of 5, 5', 5'', 5‴-(ethene-1, 1, 2, 2-tetrayltetrakis(benzene-4, 1-diyl))tetrakis(pyrimidin-2-amine) and cyanuric chloride in the presence of potassium carbonate. CO2 sorption experiment at 195 K reveals the permanent porosity of PTOP with a Brunauer-Emmett-Teller surface area of 227 m 2 g −1 . In particular, the existence of rich secondary amines and pyrimidine nitrogen atoms surrounding the 1, 3, 5-triazine moieties in PTOP provides abundant chelating sites for metal ions, endowing a fast-response and sensitive fluorescence sensing Fe(III) with a low limit of detection of 4.5 μM. In addition, this polymer also shows an excellent sensing performance towards nitrobenzene with good selectivity and a low detection limit of 1.6 nM. Graphical abstract: A fluorescent porous tetraphenylethylene-based organic polymer (PTOP ) was constructed and capable of exhibiting a fast-response and sensitive fluorescence sensing both Fe(III) and nitrobenzene. Image 1 Highlights: A fluorescent porous tetraphenylethylene-based organic polymer (PTOP ) was constructed. CO2 sorption experiment reveals that the BET surface area of PTOP is 227 m 2 g –1 . PTOP endows a fast-response and sensitive fluorescence sensing Fe(III) and nitrobenzene with low LOD of 4.5 μM and 1.6 nM.