Journal Highlight: Development of fluorescent gelators and detection of explosives using fibrous xerogel films

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  • Published: Jul 11, 2016
  • Author: spectroscopyNOW
  • Channels: UV/Vis Spectroscopy
thumbnail image: Journal Highlight: Development of fluorescent gelators and detection of explosives using fibrous xerogel films
Fluorescent gelators containing stilbene segments have been synthesized, characterised and used to detect TNT and RDX vapour by fluorescence quenching.

Development of fluorescent gelators and detection of explosives using fibrous xerogel films

Macromolecular Symposia, 2016, 364, 7-18
Kenji Hanabusa, Kazuki Harano, Masafumi Fujisaki, Yasushi Nomura and Masahiro Suzuki

Abstract: Fluorescent gelators containing stilbene segments were synthesized, and their gelation abilities were studied. Fibrous xerogel films were prepared from the gels on quartz plates, and their abilities to detect explosives were evaluated by the fluorescence quenching of the xerogel films upon exposure to saturated TNT or RDX vapor. The morphologies of the xerogel films were studied by TEM and DFM. The xerogel films that showed effective fluorescence quenching were found to have 3D fibrous networks with widths of several tens of nanometers and entangled fibrous aggregates with very uneven surfaces. The mechanism for detecting TNT was discussed from the viewpoint of HOMO and LUMO levels.

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