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Thermo-Sensitive Eu-III Coordination Polymers with Amorphous Networks

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Title: Thermo-Sensitive Eu-III Coordination Polymers with Amorphous Networks
Authors: Hasegawa, Yasuchika Browse this author →KAKEN DB
Sato, Natsumi Browse this author
Hayashi, Joe Browse this author
Kitagawa, Yuichi Browse this author →KAKEN DB
Fushimi, Koji Browse this author →KAKEN DB
Keywords: luminescence
coordination polymer
Issue Date: 26-Mar-2021
Publisher: Wiley-Blackwell
Journal Title: ChemistrySelect
Volume: 6
Issue: 12
Start Page: 2812
End Page: 2816
Publisher DOI: 10.1002/slct.202100531
Abstract: Luminescent Eu-III coordination polymer with amorphous transformation and thermo-sensing abilities under higher temperature, [Eu(hfa)(3)(tppa)(n)](m) (hfa: hexafluoroacetylacetonate, tppa: tri-diphenylphosphoryl-4,4,4-triphenylamine) is reported. The glass transition and decomposition temperatures are found to be 142 degrees C and 270 degrees C, respectively. The intrinsic emission quantum yield phi(4f-4f) of [Eu(hfa)(3)(tppa)(n)](m) was estimated to be 69 % in solid state. [Eu(hfa)(3)(tppa)(n)](m) shows effective decrease in the emission lifetime upon increasing the temperature from 320 to 400 K. The temperature-depended emission lifetime is caused by the back energy transfer from emitting level of Eu-III ion (D-5(0)) to the LLCT band (tppa ligand to hfa ligand) in [Eu(hfa)(3)(tppa)(n)](m). Thermo-sensitive lanthanide luminophore with stable glass formation in higher temperature (>100 degrees C) is useful for surface temperature detection in the field of high-speed wind tunnel experiments such as aircraft and automobile designs.
Rights: This is the peer reviewed version of the following article:, which has been published in final form at This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
Type: article (author version)
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)

Submitter: 長谷川 靖哉

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