Synthesis and Luminescence Properties of Iridium(III) Azide- and Triazole-Bisterpyridine Complexes
作者:Daniel Goldstein、Joshua Peterson、Yuen Cheng、Raphael Clady、Timothy Schmidt、Pall Thordarson
DOI:10.3390/molecules18088959
日期:——
We describe here the synthesis of azide-functionalised iridium(III) bisterpyridines using the “chemistry on the complex” strategy. The resulting azide-complexes are then used in the copper(I)-catalysed azide-alkyne Huisgen 1,3-dipolar cycloaddition “click chemistry” reaction to from the corresponding triazole-functionalised iridium(III) bisterpyridines. The photophysical characteristics, including lifetimes, of these compounds were also investigated. Interestingly, oxygen appears to have very little effect on the lifetime of these complexes in aqueous solutions. Unexpectedly, sodium ascorbate acid appears to quench the luminescence of triazole-functionalised iridium(III) bisterpyridines, but this effect can be reversed by the addition of copper(II) sulfate, which is known to oxidize ascorbate under aerobic conditions. The results demonstrate that iridium(III) bisterpyridines can be functionalized for use in “click chemistry” facilitating the use of these photophysically interesting complexes in the modification of polymers or surfaces, to highlight just two possible applications.
我们在此描述了使用“复杂物上的化学”策略合成氮杂基功能化铱(III)双吡啶的过程。随后,将产生的氮杂复合物用于铜(I)催化的氮杂-炔烃Huisgen 1,3-偶极环加成“点击化学”反应,以形成相应的三唑功能化铱(III)双吡啶。这些化合物的光物理特性,包括寿命,也被进行了研究。有趣的是,氧气似乎对这些复合物在水溶液中的寿命几乎没有影响。出人意料的是,抗坏血酸钠似乎会淬灭三唑功能化铱(III)双吡啶的发光,但这一效应可以通过添加已知在有氧条件下氧化抗坏血酸的硫酸铜(II)来逆转。研究结果表明,铱(III)双吡啶可以被功能化,以便用于“点击化学”,从而促进这些在光物理上具有趣味的复合物在聚合物或表面修饰中的应用,这只是两个可能的应用示例。