Silsesquioxane-Based Triphenylamine-Linked Fluorescent Porous Polymer for Dyes Adsorption and Nitro-Aromatics Detection

Qingzheng Wang; Masafumi Unno; Hongzhi Liu

doi:10.3390/ma14143851

Silsesquioxane-Based Triphenylamine-Linked Fluorescent Porous Polymer for Dyes Adsorption and Nitro-Aromatics Detection

Materials (Basel). 2021 Jul 9;14(14):3851. doi: 10.3390/ma14143851.

Authors

Qingzheng Wang^{1

2}, Masafumi Unno², Hongzhi Liu^{1

3}

Affiliations

¹ Key Laboratory of Special Functional Aggregated Materials, School of Chemistry and Chemical Engineering, Ministry of Education Shandong University, 27 Shanda Nanlu, Jinan 250100, China.
² Department of Chemistry and Chemical Biology, Graduate School of Science and Technology, Gunma University, Kiryu 376-8515, Japan.
³ Key Laboratory of Organosilicon and Materials Technology of the Ministry of Education, Hangzhou Normal University, Hangzhou 311121, China.

Abstract

In order to enrich hybrid materials, a novel fluorescent silsesquioxane-based polymer (denoted as PCS-OTS) was synthesized by Friedel-Crafts reaction starting from octavinylsilsesquioxane (OVS) with triphenylamine-functionalized silsesquioxane monomer (denoted as OTS) with AlCl₃ as catalyst. PCS-OTS possessed a high surface area of 816 m²/g and a unique bimodal pore structure. The triphenylamine unit endowed PCS-OTS with excellent luminescence, which made it act as a sensitive chemical sensor and detect p-nitrophenol with high sensitivity (K_SV = 81,230 M^-1). Moreover, PCS-OTS can significantly remove dyes, and the respective adsorption capacity for Rhodamine B (RB), Congo red (CR) and Methyl Orange (MO) is 1935, 1420 and 155 mg/g. Additionally, it could simultaneously remove multiple dyes from water by simple filtration and be easily regenerated. This hybrid porous polymer can be a good choice for water treatment.

Keywords: dye adsorption; nanoporous polymer; nitro-aromatics detection; silsesquioxane; triphenylamine.

Abstract

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