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Journal of Sol-Gel Science and Technology

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15.03.2019 | Original Paper: Nano- and macroporous materials (aerogels, xerogels, cryogels, etc.)

Photoluminescent porous aerogel monoliths containing ZnEu-complex: the first example of aerogel modified with a heteronuclear metal complex

verfasst von: Kh. E. Yorov, S. Yu. Kottsov, А. Е. Baranchikov, O. V. Boytsova, M. A. Kiskin, E. A. Varaksina, G. P. Kopitsa, S. А. Lermontov, A. A. Sidorov, V. Pipich, A. Len, A. V. Agafonov, V. K. Ivanov

Erschienen in: Journal of Sol-Gel Science and Technology | Ausgabe 2/2019

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Abstract

A procedure for the chemical immobilization of a new Zn^II–Eu^III heterobimetallic complex in the SiO₂ aerogel matrix has been developed. In this Zn–Eu complex, a peripheral non-luminescent Zn ion acts as a binder to a silica matrix and prevents direct interaction of rare-earth ions with OH− and NH− groups in the silica matrix, which would have a detrimental effect on the luminescence of lanthanides. The procedure includes the synthesis of complexes, co-gelation of the obtained complex with SiO₂ sol, the washing of lyogels, and their subsequent supercritical drying in CO₂. The composition and properties of the obtained aerogels were investigated using a low-temperature nitrogen adsorption technique, helium pycnometry, FTIR, Raman, UV–visible, and luminescence spectroscopy, XPS, PXRD, SEM, TEM, TGA combined with mass spectrometry, and small-angle neutron scattering. The aerogels modified with the Zn^II–Eu^III complex demonstrated strong red luminescence upon excitation with UV light.

Vorheriger Artikel Formation of mesoporous structure in Al2O3–NaAlO2-based materials produced by template synthesis

Nächster Artikel The effect of cellulose nanocrystals and pH value on the flotation process for extraction of minerals

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Titel: Photoluminescent porous aerogel monoliths containing ZnEu-complex: the first example of aerogel modified with a heteronuclear metal complex
verfasst von: Kh. E. Yorov
S. Yu. Kottsov
А. Е. Baranchikov
O. V. Boytsova
M. A. Kiskin
E. A. Varaksina
G. P. Kopitsa
S. А. Lermontov
A. A. Sidorov
V. Pipich
A. Len
A. V. Agafonov
V. K. Ivanov
Publikationsdatum: 15.03.2019
Verlag: Springer US
Erschienen in: Journal of Sol-Gel Science and Technology / Ausgabe 2/2019
Print ISSN: 0928-0707
Elektronische ISSN: 1573-4846
DOI: https://doi.org/10.1007/s10971-019-04958-9

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