Highly luminescent lanthanide complexes sensitised by tertiary amide-linked carbostyril antennae

被引：24

作者：

Kovacs, Daniel ^{[1
]}

Phipps, Dulcie ^{[1
]}

Orthaber, Andreas ^{[1
]}

Borbas, K. Eszter ^{[1
]}

机构：

[1] Uppsala Univ, Dept Chem, Angstrom Lab, Box 523, S-75120 Uppsala, Sweden

来源：

DALTON TRANSACTIONS | 2018年 / 47卷 / 31期

基金：

瑞典研究理事会;

关键词：

PHOTOPHYSICAL PROPERTIES; CHARGE-TRANSFER; ENERGY-TRANSFER; YTTERBIUM COMPLEXES; EUROPIUM COMPLEXES; OPTICAL PROBES; EXCITED-STATE; TERBIUM; DESIGN; EU3+;

D O I：

10.1039/c8dt01270a

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Carbostyrils are among the most widely used sensitising antennae for luminescent lanthanides; they afford bright complexes with Eu and Tb, and can also sensitise the emissions of the less commonly used Sm, Dy, Yb and Nd. Systematic studies on the effect of structural variations on the photophysical properties and lanthanide sensitising abilities of carbostyrils can therefore have a large impact. We replaced the secondary amide linker that connects the metal binding site to the antenna with a carboxymethyl-substituted tertiary amide. Eight Tb and Eu complexes were prepared. All had higher lanthanide luminescence quantum yields (phi(Ln)) than their secondary amide analogues; three Tb emitters had phi(Tb) > 40%. Eu complexes had phi(Eu) up to 11.6%. The antenna singlet and triplet excited states are slightly shifted, while the metal coordination sphere is unchanged by the introduction of the carboxymethyl group.

引用

页码：10702 / 10714

页数：13

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