School of Chemistry and Molecular Biosciences, University of Queensland, St Lucia, QLD 4072, Australia.
Dalton Trans. 2019 Feb 5;48(6):2142-2149. doi: 10.1039/c8dt04640a.
Cyclometallated Pt(ii) complexes with arylpolypyridyl ligands have impressive photophysical properties (high quantum yields, long lifetimes and tuneable emission) which can be readily tuned by modification of the organic ligand. Despite this, few examples of cyclometallated Pt(ii) complexes as sensitisers for Ln(iii) emission have been reported. Herein, we report the photophysical properties for a series of bimetallic complexes incorporating an N^C^N-coordinated Pt(ii) bearing an alkynyl terpyridine as a metalloligand for a Ln(iii) ion (where Ln = Nd, Gd, Er, Yb and Lu). Using a combination of steady state, time-resolved, and transient absorption experiments, the influence on the photophysical properties of the metalloligand exerted by the different Ln(iii) cations has been investigated, together with the energy transfer efficiency from the metalloligand to the Ln(iii) 4f* excited state.
含有芳基多吡啶配体的环金属化 Pt(ii) 配合物具有令人印象深刻的光物理性质（高量子产率、长寿命和可调发射），通过有机配体的修饰可以很容易地进行调节。尽管如此，作为 Ln(iii) 发射敏化剂的环金属化 Pt(ii) 配合物的例子很少有报道。在此，我们报告了一系列包含 N^C^N 配位的 Pt(ii) 的双金属配合物的光物理性质，该 Pt(ii) 以炔基三联吡啶作为 Ln(iii) 离子（其中 Ln = Nd、Gd、Er、Yb 和 Lu）的金属配体。通过稳态、时间分辨和瞬态吸收实验的结合，研究了不同 Ln(iii) 阳离子对金属配体光物理性质的影响，以及从金属配体到 Ln(iii) 4f*激发态的能量转移效率。
