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Hokkaido University Collection of Scholarly and Academic Papers >
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An Europium (III) Luminophore with Pressure-Sensing Units: Effective Back Energy Transfer in Coordination Polymers with Hexadentate Porous Stable Networks
| Title: | An Europium (III) Luminophore with Pressure-Sensing Units: Effective Back Energy Transfer in Coordination Polymers with Hexadentate Porous Stable Networks |
| Authors: | Hasegawa, Yasuchika Browse this author →KAKEN DB | | Sawanobori, Takuya Browse this author | | Kitagawa, Yuichi Browse this author →KAKEN DB | | Shoji, Sunao Browse this author | | Fushimi, Koji Browse this author →KAKEN DB | | Nakasaka, Yuta Browse this author →KAKEN DB | | Masuda, Takao Browse this author →KAKEN DB | | Hisaki, Ichiro Browse this author |
| Keywords: | coordination polymer | | energy transfer | | europium | | luminescence | | oxygen sensor |
| Issue Date: | Sep-2020 |
| Publisher: | Wiley-Blackwell |
| Journal Title: | ChemPlusChem |
| Volume: | 85 |
| Issue: | 9 |
| Start Page: | 1989 |
| End Page: | 1993 |
| Publisher DOI: | 10.1002/cplu.202000513 |
| Abstract: | A luminescent Eu(III)coordination polymer with O-2-sensing units under air, Eu-III-hcpt (hcpt: 2,3,6,7,10,11-hexakis(4-carboxy-phenyl)triphenylene), is reported. The hexadentate carboxylic acids in hcpt ligands play an important role in the formation of tight-packed three-dimensional networks in Eu-III-hcpt, giving hyper thermo-stable structures (decomposition temperature=420 degrees C). The three-dimensional porous network promotes bright luminescence (4f-4f emission quantum yield=70 %). The emission lifetime of Eu-III-hcpt under vacuum (0.86 ms) was twice as large as that under O-2(0.48 ms, 1 atom:101.3 kPa). The Arrhenius analysis of the emission decay profile indicates that the back energy transfer (BEnT) from the emitting level of the europium(III) ion to the excited T(1)state of the hcpt ligand should be activated at room temperature. The gradual decrease of emission lifetime is caused by the BEnT process in Eu-III-hcpt. Finally, an advanced pressure-sensitive luminophore is demonstrated. |
| Rights: | This is the accepted version of the following article: ChemPlusChem, which has been published in final form at https://chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/cplu.202000513. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/82575 |
| 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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