TY - JOUR
T1 - Dual-channel sensing of CO2
T2 - Reversible solution-gel transition and gelation-induced fluorescence enhancement
AU - Zhang, Xin
AU - Mu, Huifang
AU - Li, Haimiao
AU - Zhang, Yu
AU - An, Meng
AU - Zhang, Xuhong
AU - Yoon, Juyoung
AU - Yu, Haitao
N1 - Publisher Copyright:
© 2017 Elsevier B.V.
PY - 2018/2
Y1 - 2018/2
N2 - 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 1H 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.
AB - 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 1H 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.
KW - Aggregation-induced emission
KW - Anion-activated strategy
KW - Aroylhydrazone-derivatized organogelator
KW - CO sensor
KW - Solution-to-gel transition
UR - http://www.scopus.com/inward/record.url?scp=85029606096&partnerID=8YFLogxK
U2 - 10.1016/j.snb.2017.09.091
DO - 10.1016/j.snb.2017.09.091
M3 - Article
AN - SCOPUS:85029606096
SN - 0925-4005
VL - 255
SP - 2764
EP - 2778
JO - Sensors and Actuators, B: Chemical
JF - Sensors and Actuators, B: Chemical
ER -