open access

https://hdl.handle.net/2115/72488

A Luminescent Dinuclear Eu-III/Tb-III Complex with LMCT Band as a Single-Molecular Thermosensor

英語

sensors

2018-02-06

Wiley-Blackwell

Chemistry-A European journal

24(8)

1956-1961

Temperature-dependent luminescence of a dinuclear Eu-III/Tb-III complex with a seven-coordinate structure is demonstrated. The dinuclear complex is composed of two lanthanide ions, six tetramethylheptanedionate ligands, and a bidentate phosphine oxide linker ligand. The dinuclear structure of the complex was characterized by single-crystal XRD. Intrinsic 4f-4f emission quantum yields of the dinuclear Eu-III and Tb-III complexes were 66 and 61%, respectively. The luminescence color of the dinuclear Eu-III/Tb-III complex changed from red to green with increasing temperature. The thermosensing range based on the ratio of luminescence intensity (A(Eu)/A(Tb)) was 100-450K. The temperature-dependent luminescence is due to the presence of a ligand-to-metal charge-transfer state.

学術雑誌論文

Accepted Manuscript

This is the peer reviewed version of the following article: Kei Yanagisawa et al., A Luminescent Dinuclear Eu-III/Tb-III Complex with LMCT Band as a Single-Molecular Thermosensor, Chemistry - A European Journal, 24(8), p.1956-1961, 2018, which has been published in final form at http://doi.org/10.1002/chem.201705021. This article may be used for non-commercial purposes in accordance With Wiley-VCH Terms and Conditions for Self-archiving.

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