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Characteristic Evaluation of Chameleon Luminophore Dispersed in Polymer

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Title: Characteristic Evaluation of Chameleon Luminophore Dispersed in Polymer
Authors: Kasai, Miku Browse this author
Sugioka, Yosuke Browse this author
Yamamoto, Masanori Browse this author
Nagata, Takayuki Browse this author
Nonomura, Taku Browse this author
Asai, Keisuke Browse this author
Hasegawa, Yasuchika Browse this author
Keywords: temperature-sensitive paint (TSP)
chameleon luminophore
sensitivity characteristics
polymer
Issue Date: May-2020
Publisher: MDPI
Journal Title: Sensors
Volume: 20
Issue: 9
Publisher DOI: 10.3390/s20092623
Abstract: A temperature-sensitive paint (TSP) using a chameleon luminophore <mml:semantics>[Tb0.99Eu0.01(hfa)3(dpbp)]n</mml:semantics> is proposed. The chameleon luminophore was dispersed in isobutyl methacrylate polymer in a toluene solvent to fix it on a sample coupon. Temperature and pressure sensitivities of the chameleon luminophore-based TSP were measured using a spectrofluorophotometer. The emission for each wavelength was confirmed to be dependent on the temperature and pressure. The temperature and pressure sensitivities of the TSP were 0.81-2.8%/K and 0.08-0.12%/kPa, respectively. Higher temperature sensitivity can be obtained using the ratio of emissions from the two lanthanide ions, <mml:semantics>TbIII</mml:semantics> and <mml:semantics>EuIII</mml:semantics>. The temperature sensitivity when using the ratio of the emission intensities at 616 nm derived from <mml:semantics>EuIII</mml:semantics> and at 545 nm derived from <mml:semantics>TbIII</mml:semantics> was 3.2%/K, which was the highest value in the present study. In addition, the pressure sensitivity for the case using the ratio of the emission intensities at 616 and 545 nm was <mml:semantics>4.8x10-2%</mml:semantics>/kPa. Higher temperature sensitivity and lower pressure sensitivity than that with a single wavelength can be achieved using the ratio of the emission intensities at the two peak wavelengths derived from <mml:semantics>TbIII</mml:semantics> and <mml:semantics>EuIII</mml:semantics>.
Rights: https://creativecommons.org/licenses/by/4.0/
Type: article
URI: http://hdl.handle.net/2115/78878
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

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