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

Yanagisawa Kei | Zendy; Kitagawa Yuichi | Zendy; Nakanishi Takayuki | Zendy; Seki Tomohiro | Zendy; Fushimi Koji | Zendy; Ito Hajime | Zendy; Hasegawa Yasuchika | Zendy

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

Author(s) -

Yanagisawa Kei,

Kitagawa Yuichi,

Nakanishi Takayuki,

Seki Tomohiro,

Fushimi Koji,

Ito Hajime,

Hasegawa Yasuchika

Publication year - 2018

Publication title -

chemistry – a european journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.687

H-Index - 242

eISSN - 1521-3765

pISSN - 0947-6539

DOI - 10.1002/chem.201705021

Subject(s) - luminescence , denticity , lanthanide , chemistry , ligand (biochemistry) , crystallography , crystal structure , ion , phosphine oxide , photochemistry , phosphine , materials science , optoelectronics , catalysis , biochemistry , receptor , organic chemistry

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 100–450 K. The temperature‐dependent luminescence is due to the presence of a ligand‐to‐metal charge‐transfer state.

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