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Selective dye adsorption and metal ion detection using multifunctional silsesquioxane-based tetraphenylethene-linked nanoporous polymers

Abstract

Multifunctional hybrid fluorescent porous materials have been prepared by Friedel-Crafts reaction of octavinylsilsesquioxane (OVS) with tetraphenylethene (TPE). These hybrid porous polymers possess high surface areas up to 1910 cm2 g-1, bimodal pore structures with micropores centered at ≈ 1.4 nm and mesopores centered at ≈ 4.5 nm, respectively. They show a moderate CO2 adsorption capacity of 6.25 wt% (1.42 mmol g-1) at 273 K/101 Kpa. Remarkably, they exhibit highly size-selective adsorption of dye of 1666 mg g-1 for Rhodamine B (RB), 1040 mg g-1 for Congo red (CR) and 862 mg g-1 for Crystal violet (CV), respectively. Furthermore, the incorporation of tetraphenylethene unit induces higher fluorescence (λem = 490 nm) and high sensitivity for Fe3+, Cu2+ and Ru3+, especially for Fe3+ with KSV =140k M-1 observed. They are very promising for multiple applications in dye separation and sensor, etc.

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Publication details

The article was received on 10 Feb 2017, accepted on 11 Apr 2017 and first published on 12 Apr 2017


Article type: Paper
DOI: 10.1039/C7TA01255A
Citation: J. Mater. Chem. A, 2017, Accepted Manuscript
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    Selective dye adsorption and metal ion detection using multifunctional silsesquioxane-based tetraphenylethene-linked nanoporous polymers

    H. Liu and H. Liu, J. Mater. Chem. A, 2017, Accepted Manuscript , DOI: 10.1039/C7TA01255A

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