Photophysical and optical power limiting behaviors of Au(I) acetylides with diethynyl aromatic ligands showing different electronic features
Photophysical and optical power limiting behaviors of Au(I) acetylides with diethynyl aromatic ligands showing different electronic features
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具有不同电子特征的二乙炔基芳香配体的 Au(I) 乙炔化物的光物理和光功率限制行为
DOI：
10.1016/j.jorganchem.2015.12.036
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发表时间：
2016-02-15
影响因子：
2.3
通讯作者：
Wu, Yong
中科院分区：
文献类型：
--
作者：
Liu, Boao;Tian, Zhuanzhuan;Wu, Yong
在温和的条件下，将(PPh_3)Au与具有不同电子性质的二乙炔基芳香族配体偶联，合成了三种Au(I)乙酰。详细研究了它们的光物理性质和光功率限制(OPL)行为。通过改变二乙炔基芳香族配体的化学结构，Au(I)乙炔类化合物的发射特性可以发生很大的变化，表现出单态或三态发射信号。此外，二乙炔基芳香族配体对Au(I)乙炔类化合物的OPL行为也有影响，表现出不同的OPL机理。结果表明，既不富电子又不缺电子的二乙炔芳香族配体具有较高的OPL活性和透明性，有利于Au(I)乙酰基化合物的OPL性能。此外，Au(I)乙酰化合物的OPL性能可以与最先进的C-60相媲美，甚至更好，这表明它们在激光防护领域具有巨大的潜力。所得结果将为设计高性能的Au(I)乙酰基光致发光材料提供有价值的信息。(C)2016爱思唯尔B.V.保留所有权利。
Three Au(I) acetylides have been prepared by coupling (PPh3) AuCl to the diethynyl aromatic ligands with different electronic features under mild condition. Their photophysical properties and optical power limiting (OPL) behaviors have been investigated in detail. The emission characters of the Au(I) acetylides can vary dramatically by exhibiting either singlet or triplet emission signal through changing the chemical structures of the diethynyl aromatic ligands. In addition, the OPL behaviors of the Au(I) acetylides are also affected by the diethynyl aromatic ligands to show different OPL mechanism. It has been shown that the diethynyl aromatic ligand with neither electron-rich nor electron-deficient features should benefit the OPL performance of the Au(I) acetylides in view of both OPL activity and transparency. Furthermore, the Au(I) acetylides can show comparable or even better OPL performances than the state-of-the-art C-60, indicating their great potential in the field of laser protection. All the obtained results should provide valuable information for design high performance OPL materials based on Au(I) acetylides. (C) 2016 Elsevier B.V. All rights reserved.