Organometallic acetylides of Pt(II), Au(I) and Hg(II) as new generation optical power limiting materials.
Organometallic acetylides of Pt(II), Au(I) and Hg(II) as new generation optical power limiting materials.
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DOI：
10.1039/c0cs00094a
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发表时间：
2011-04
影响因子：
46.2
通讯作者：
Guijiang Zhou;W. Wong
中科院分区：
文献类型：
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作者：
Guijiang Zhou;W. Wong
在非线性光学领域，光限幅材料（optical power limiting，OPL）被认为是一类重要的化合物，可以保护敏感的光学传感器或人眼免受强激光束的突然照射。最近的努力已经致力于开发有机金属乙炔化物配合物，树枝状聚合物和聚合物作为下一代高性能OPL材料，其可以有利地优化光限幅/透明度权衡问题。这些金属化的材料提供了一种新的途径，以一个新的家庭的高度透明的同质和异质金属光学限幅器具有良好的解决方案的可加工性，优于那些目前最先进的可见光吸收的竞争对手，如富勒烯，金属卟啉和金属酞菁。这篇评论的目的是提供一个详细的帐户，这些新的OPL发色团的最新进展。它们的OPL活性强烈地依赖于芳撑乙炔基配体和过渡金属部分的电子性质以及化合物的共轭链长度。包括与其他过渡金属的共聚、结构几何形状的改变、树枝状平台的使用以及过渡金属离子的类型和含量的变化在内的策略将强烈地控制它们的光物理行为并改善所得的OPL响应。特别强调的是放在这些有机金属乙炔化物材料的结构OPL响应关系。最后介绍了利用这些材料实现实用化OPL器件的研究工作。本文最后对该领域的现状以及超越其前沿的机会进行了展望（106篇参考文献）。
Within the scope of nonlinear optics, optical power limiting (OPL) materials are commonly regarded as an important class of compounds which can protect the delicate optical sensors or human eyes from sudden exposure to damaging intense laser beams. Recent efforts have been devoted to developing organometallic acetylide complexes, dendrimers and polymers as high performance OPL materials of the next generation which can favorably optimize the optical limiting/transparency trade-off issue. These metallated materials offer a new avenue towards a new family of highly transparent homo- and heterometallic optical limiters with good solution processability which outperform those of current state-of-the-art visible-light-absorbing competitors such as fullerenes, metalloporphyrins and metallophthalocyanines. This critical review aims to provide a detailed account on the recent advances of these novel OPL chromophores. Their OPL activity was shown to depend strongly on the electronic characters of the aryleneethynylene ligand and transition metal moieties as well as the conjugation chain length of the compounds. Strategies including copolymerization with other transition metals, change of structural geometry, use of a dendritic platform and variation of the type and content of transition metal ions would strongly govern their photophysical behavior and improve the resulting OPL responses. Special emphasis is placed on the structure-OPL response relationships of these organometallic acetylide materials. The research endeavors for realizing practical OPL devices based on these materials have also been presented. This article concludes with perspectives on the current status of the field, as well as opportunities that lie just beyond its frontier (106 references).