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Ultrasensitive water sensors based on fluorenone-tetraphenylethene AIE luminogens

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Abstract

Two solvatochromic fluorenone-tetraphenylethene luminogens, 2-(4-(1,2,2-triphenylvinyl)phenyl)-9H-fluoren-9-one (TPE-FO) and 2,7-bis(4-(1,2,2-triphenylvinyl)phenyl)-9H-fluoren-9-one (TPE-FO-TPE), have been designed and synthesized, in which tetraphenylethene offers dual functions, i.e., aggregation-induced emission (AIE) and electron donation. Both TPE-FO and TPE-FO-TPE exhibit pronounced solvatochromic effects and AIEE activity. The two luminogens exhibit ultra-high sensitivity to trace water in organic solvents such as THF or dioxane. The Stern–Volmer plots show good linear relationships with water fractions below 0.9%. The detection limit of TPE-FO for water in THF is calculated to be 11 ppm which is pretty close to that of Karl–Fischer titration.

Graphical abstract: Ultrasensitive water sensors based on fluorenone-tetraphenylethene AIE luminogens

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Publication details

The article was received on 19 Apr 2017, accepted on 25 Apr 2017 and first published on 27 Apr 2017


Article type: Research Article
DOI: 10.1039/C7QM00172J
Citation: Mater. Chem. Front., 2017, Advance Article
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    Ultrasensitive water sensors based on fluorenone-tetraphenylethene AIE luminogens

    T. Chen, Z. Chen, W. Gong, C. Li and M. Zhu, Mater. Chem. Front., 2017, Advance Article , DOI: 10.1039/C7QM00172J

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