“Turn-on” chemosensor luminescent polymer compositions doped with europium (III) chelates

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Abstract

The luminescent chemosensory properties of polymer composites doped with Eu(III) carboxylated dibenzoylmethanates were studied. It was shown that the interaction of the composites with ammonia and amine vapors leads to an increase in the luminescence intensity of the complexes. The obtained chemosensory polymeric compositions with the effect of “switching on” luminescence when exposed to analytes are promising for environmental monitoring.

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About the authors

N. V. Petrochenkova

Institute of Chemistry, Far Eastern Branch of the RAS; Adm. G.I. Nevelskoy Maritime State University

Email: mirochnik@ich.dvo.ru
Russian Federation, Vladivostok; Vladivostok

A. G. Mirochnik

Institute of Chemistry, Far Eastern Branch of the RAS

Author for correspondence.
Email: mirochnik@ich.dvo.ru
Russian Federation, Vladivostok

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2. Fig. 1. A – excitation spectra (λlum. = 617 nm) (a) and luminescence spectra (λexc. = 365 nm) (b) of complex III in PMMA: 1 – initial sample, 2 – in the presence of methylamine vapor; B – excitation spectra (λlum. = 617 nm) (a) and luminescence spectra (λexc. = 365 nm) (b) of complex VI in PS: 1 – initial sample, 2 – in the presence of ammonia vapor.

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3. Fig. 2. Change in the luminescence intensity of complexes I−VI under the action of ammonia and methylamine in polymer matrices: (a) – PMMA, (b) – PS (transition 5D0–7F2). The luminescence intensity of the original sample is taken as a unit.

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4. Fig. 3. Change in the luminescence intensity of complexes II, V under the action of ammonia and amines in PMMA (complex content 6 wt.%, transition 5D0–7F2).

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5. Fig. 4. Excitation spectra (λlum. = 617 nm) (a) and luminescence spectra (λexc. = 365 nm) (b) of complex V in polyethylene (0.1 wt.%): 1 – initial sample, 2 – in the presence of ammonia vapor, (c) luminescent sensory response of complex V at different ammonia concentrations (λlum. = 615 nm).

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6. Fig. 5. (a) Dependence of the intensity of the luminescent response of the complexes on their content in PE; (b) change in the luminescence intensity of complexes V, VI under the action of ammonia and amines in PE (complex content 1 wt.%, transition 5D0–7F2).

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