In:
Journal of Nanoscience and Nanotechnology, American Scientific Publishers, Vol. 16, No. 4 ( 2016-04-01), p. 4023-4028
Abstract:
In this article, oxygen and temperature-sensing hybrid materials consisting of [Ru(Phen) 3 ] 2+ portions covalently-grafted onto the sol–gel derived ormosil network were prepared by co-condensation of tetraethoxysilane (TEOS) using n -octyltriethoxysilane as the network modifier. For comparison purposes, the hybrid materials in which [Ru(Phen) 3 ] 2+ were conventionally physically-incorporated into the matrix were also prepared. The obtained hybrid materials were characterized by Fourier transform infrared (FT-IR), luminescence
intensity oxygen quenching Stern-Volmer plots, temperature quenching plots and excited-state lifetime. The near linear Stern-Volmer plots can be attributed to the approximate heterogeneous environment of the luminophore within the ormosil materials. The results reveal that the covalently-grafted sample is more sensitive to O 2 , and has a higher sensing sensitivity and a higher thermal activation energy compared to the physically-incorporated one, since these Ru(II) molecules are strongly covalently-grafted onto the Si–O network via the CH 2 –Si bonds
and less –OH group.
Type of Medium:
Online Resource
ISSN:
1533-4880
DOI:
10.1166/jnn.2016.11887
Language:
English
Publisher:
American Scientific Publishers
Publication Date:
2016
SSG:
11
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