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Graphical Abstract
<Title>
Detection of Amine Vapors using Luminescent Xerogels from Supramolecular Metal-Containing Gelator
<Authors' names>
Junpei Sasaki, Masahiro Suzuki, Kenji Hanabusa
<Summary>
Fluorescent gelators containing a tris(-diketonato) complex are synthesized by using gelation-driving chelates, and their gelation
abilities are studied. Thin-layer films are prepared on quartz plates from the solutions and studied as chemosensors for amines. The
fluorescence-quenching efficiencies upon exposure to saturated primary and secondary amines depend on the basicity and bulkiness of
the amines rather than the vapor pressure.
<Diagram>
Vapor of amines
0.5 µm
Fl uorescence Quenching (%)
100
Supramolecular assembly of
Eu 3+-containing gelator
80
60
40
Hexylamine
Ammonia
Aniline
Naphthylamine
20
20
40
Ti me (min)
60
Fluorescence quenching of xerogel film of
Eu3+-containing gelator by amines
...