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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Water-soluble, luminescent iridium(iii)-ytterbium(iii) complexes using dipyrido[3,2-a:2′,3′-c]phenazine derivatives as bridging units
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Water-soluble, luminescent iridium(iii)-ytterbium(iii) complexes using dipyrido[3,2-a:2′,3′-c]phenazine derivatives as bridging units

机译:使用二吡啶并[3,2-a:2',3'-c]吩嗪衍生物作为桥联单元的水溶性发光铱(iii)-y(iii)络合物

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摘要

Amino-substituted dipyrido[3,2-a:2′,3′-c]phenazine (L ~1) and dimethyl-dipyrido[3,2-a:2′,3′-c]phenazine (L ~2) have been investigated as: (i) chromophores in cyclen-based ligands for lanthanide(iii) ions; (ii) ancillary co-ligands in cyclometalated iridium(iii) complexes; (iii) bridging, linker units in covalently linked, water-soluble bimetallic lanthanide(iii) iridium(iii) hybrid complexes. The dipyrido[3,2-a:2′,3′-c]phenazine (dppz) derivatives can act as sensitising chromophores (λ _(ex) 400 nm) for Yb(iii), resulting in characteristic near-IR emission at 950-1050 nm. The incorporation of dppz-type ligands into cyclometalated Ir ~(III) complexes of the general type [Ir(epqc) _2(L ~n)](PF _6) (where epqc = ethylphenylquinoline carboxylate) gave luminescent species with solvent-sensitive emission properties. Steady state and time-resolved luminescence measurements on the water-soluble d-f hybrid species showed that Yb ~(III) can be sensitised using visible light.
机译:氨基取代的二吡啶并[3,2-a:2',3'-c]吩嗪(L〜1)和二甲基-二吡啶并[3,2-a:2',3'-c]吩嗪(L〜2)已被研究为:(i)镧系元素(iii)离子的基于Cyclon的配体中的生色团; (ii)环金属化铱(iii)配合物中的辅助共配体; (iii)在共价连接的水溶性双金属镧系元素(iii)铱(iii)杂化复合物中桥接连接单元。 dipyrido [3,2-a:2',3'-c] phenazine(dppz)衍生物可充当Yb(iii)的致敏发色团(λ_(ex)400 nm),导致在950-1050 nm。将dppz型配体掺入一般类型[Ir(epqc)_2(L〜n)](PF _6)(其中epqc =乙基苯基喹啉羧酸盐)的环金属化Ir〜(III)配合物中,得到发光型,且溶剂敏感属性。对水溶性d-f杂种的稳态和时间分辨发光测量表明,Yb〜(III)可以用可见光敏化。

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