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Seven-Coordinate Luminophores: Brilliant Luminescence of Lanthanide Complexes with C-3v Geometrical Structures
| Title: | Seven-Coordinate Luminophores: Brilliant Luminescence of Lanthanide Complexes with C-3v Geometrical Structures |
| Authors: | Yanagisawa, Kei Browse this author | | Nakanishi, Takayuki Browse this author →KAKEN DB | | Kitagawa, Yuichi Browse this author | | Seki, Tomohiro Browse this author →KAKEN DB | | Akama, Tomoko Browse this author | | Kobayashi, Masato Browse this author | | Taketsugu, Tetsuya Browse this author →KAKEN DB | | Ito, Hajime Browse this author →KAKEN DB | | Fushimi, Koji Browse this author →KAKEN DB | | Hasegawa, Yasuchika Browse this author →KAKEN DB |
| Keywords: | Lanthanides | | Luminescence | | O ligands | | Structure elucidation | | Density functional calculations |
| Issue Date: | Oct-2015 |
| Publisher: | Wiley-Blackwell |
| Journal Title: | European journal of inorganic chemistry |
| Volume: | 28 |
| Start Page: | 4769 |
| End Page: | 4774 |
| Publisher DOI: | 10.1002/ejic.201500820 |
| Abstract: | Enhanced luminescence properties of mononuclear lanthanide complexes with asymmetric seven-coordination structures are reported for the first time. The lanthanide complexes are composed of a lanthanide ion (Eu-III or Tb-III), three tetramethyl heptanedionato ligands, and one triphenylphosphine oxide ligand. The coordination geometries of the lanthanide complexes have been evaluated by using single-crystal X-ray analyses and shape-measurement calculations. The complexes are categorized to be seven-coordinate monocapped octahedral structures (point group C-3v). The seven-coordinate lanthanide complexes show high intrinsic emission quantum yields, extra-large radiative rate constants, and unexpected small nonradiative rate constants. The brilliant luminescence properties have been elucidated in terms of the asymmetric coordination geometry and small vibrational quanta related to thermal relaxation. |
| Rights: | This is the peer reviewed version of the following article: European Journal of Inorganic Chemistry 2015(28) 4769-4774, which has been published in final form at http://doi.org/10.1002/ejic.201500820. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/62879 |
| 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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