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Thermo-Sensitive Eu-III Coordination Polymers with Amorphous Networks
| 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 | | lanthanide | | europium | | coordination polymer | | amorphous |
| 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: https://chemistry-europe.onlinelibrary.wiley.com/loi/23656549, which has been published in final form at https://chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/slct.202100531. 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) |
| URI: | http://hdl.handle.net/2115/84444 |
| 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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Submitter: 長谷川 靖哉
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