Enhanced TbIII-centered Luminescence due to Elongated Methylene Arms of Tripodal Schiff Base Ligand

LnIII-tripodal Schiff base complex TbIIILtrpn was prepared, in which the three arms of the ligand were extended by one methylene based on the tris(2-aminoethyl)amine in TbIIILtren. TbIIILtrpn showed enhanced TbIII-centered luminescence compared to TbIIILtren. Crystallographic analysis revealed that...

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Veröffentlicht in:Chemistry letters 2021-01, Vol.50 (7), p.1382-1384
Hauptverfasser: Karashimada, Ryunosuke, Kambe, Takafumi, Igarashi, Chikai, Masuya-Suzuki, Atsuko, Iki, Nobuhiko
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Sprache:eng
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Zusammenfassung:LnIII-tripodal Schiff base complex TbIIILtrpn was prepared, in which the three arms of the ligand were extended by one methylene based on the tris(2-aminoethyl)amine in TbIIILtren. TbIIILtrpn showed enhanced TbIII-centered luminescence compared to TbIIILtren. Crystallographic analysis revealed that the symmetry of the seven-coordination environment of the TbIII center in TbIIILtrpn was diminished compared to that in TbIIILtren, resulting in the increased radiative transition rate and/or decreased back energy transfer rate and, thus, the increased luminescence.
ISSN:0366-7022
1348-0715
DOI:10.1246/cl.210150