All authors would like to thank to Dokuz Eylul University, Center for Fabrication and Applications of Electronic Materials (EMUM) for XRD, XPS, SEM, and PL measurements.
In this study, we measured
oxygen-induced emission and decay-time data of tris(2,2′-bipyridyl)ruthenium(II)
chloride dye in the presence of additives, maghemite and ionic liquid,
1-butyl-3-methylimidazolium tetrafluoroborate. The fluorescent dye along with
the additives was embedded in ethylcellulose matrix that was used as supporting
material in form of thin-film and electrospun mat. The synthesized maghemite was
used to enhance the oxygen sensitivity and linear working range of the dye. Ionic
liquid (IL) was used to increase the stability and sensitivity of the sensing
fluorophore. Together with the additives ruthenium dye-based composites
exhibited higher Stern-Volmer constant (KSV), relative
signal change and
larger linear response. High relative signal change and KSV values mean that fluorophore
has a better oxygen gas sensitivity.Stern-Volmer values
of thin-film and microporous
mats were found 1.64×10−2 and 2.21×10−2,
the relative signal changes (I0/I) were calculated as 2.64 and
3.21, respectively. There is no previous work about the utilization of both
maghemite and ionic liquid additives together for the enhancement of oxygen
sensitivity of the ruthenium.
Primary Language | English |
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Subjects | Engineering |
Journal Section | Articles |
Authors | |
Publication Date | October 26, 2019 |
Published in Issue | Year 2019 Volume: 14 Issue: 4 |