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Dual-channel sensing of CO2: Reversible solution-gel transition and gelation-induced fluorescence enhancement

Title
Dual-channel sensing of CO2: Reversible solution-gel transition and gelation-induced fluorescence enhancement
Authors
Zhang, XinMu, HuifangLi, HaimiaoZhang, YuAn, MengZhang, XuhongYoon, JuyoungYu, Haitao
Ewha Authors
윤주영
SCOPUS Author ID
윤주영scopus
Issue Date
2018
Journal Title
SENSORS AND ACTUATORS B-CHEMICAL
ISSN
0925-4005JCR Link
Citation
vol. 255, pp. 2764 - 2778
Keywords
Aroylhydrazone-derivatized organogelatorCO2 sensorAnion-activated strategyAggregation-induced emissionSolution-to-gel transition
Publisher
ELSEVIER SCIENCE SA
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
It is imperative for various applications to develop new sensing systems in the visualization and detection of CO2. Here, several aroylhydrazone-derivatized organogelators have been prepared and developed as CO2 sensors via the anion-activated strategy. These new compounds can gel some of polar and apolar organic solvents to form stable organogels which have been well characterized by field emission scanning electron microscopy (FE-SEM), FT-IR spectroscopy, concentration- and temperature-dependent H-1 NMR spectra, PXRD, and UV-vis spectroscopy. In addition, they can show gelation-induced fluorescence enhancement performances which have been proven to derive from the aggregation-induced emission (AIE) effect. In particular, the fluoride anion-triggered solutions of the organogelators can permit naked-eye sensing of CO2 in air via the solution-to-gel transition. Besides, the developed gelation systems can also be used to provide quantitative means for CO2 stream through re-gelation induced fluorescence enhancement. Moreover, the reversibility of these sensing systems for the capture and release of CO2 enhances their applicable potential. (C) 2017 Elsevier B.V. All rights reserved.
DOI
10.1016/j.snb.2017.09.091
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자연과학대학 > 화학·나노과학전공 > Journal papers
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