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首页> 外文期刊>Chemistry: A European journal >Synthesis and nonlinear optical absorption of novel porphyrin-osmium-cluster complexes
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Synthesis and nonlinear optical absorption of novel porphyrin-osmium-cluster complexes

机译：新型卟啉-c-簇合物的合成及非线性光吸收

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摘要

Reaction of azido(tetra-p-tolylporphyrinato)indium(III) [TTPInN_3] and [Os_3(mu-H)_2(CO)_(10)] in toluene at 80 deg C overnight gave two major products, complexes 1 and 2. Complex 1 had an axial bridge of "NH", while 2 had an axial bridge of "N" between the porphyrin and osmium cluster moieties. Complex 1 could be converted to 2 when refluxed in toluene. These two novel porphyrin-osmium clusters are the first axially linked porphyrin-metal cluster complexes. UV/Vis spectroscopy revealed the significant ground state electronic perturbation in the capped complex 2, demonstrating that the remarkable electronic interaction of the moieties within the molecule was achieved by this special structural arrangement. In addition, the electrochemistry of 1 and 2 were investigated and their oxidation current voltage curves are similar to those of indium(III)-porphyrins with a metal-metal sigma bond such as [TPPInRe(CO)_5] (TPP = tetraphenylporphyrin). The two new molecules also exhibit large nonlinear optical absorption at 532 nm with a ns pulse laser and are potential optical limiting materials for sensor protection in the visible region.
机译：叠氮基（四-对甲苯基卟啉酮）铟（III）[TTPInN_3]和[Os_3（mu-H）_2（CO）_（10）]在甲苯中于80℃反应过夜，得到两种主要产物，配合物1和2配合物1在卟啉和簇部分之间具有“ NH”的轴向桥，而2在卟啉和簇部分之间具有“ N”的轴向桥。当在甲苯中回流时，配合物1可转化为2。这两个新颖的卟啉-os簇是第一个轴向连接的卟啉-金属簇合物。 UV / Vis光谱法揭示了封端的配合物2中明显的基态电子扰动，表明分子内各部分的显着电子相互作用是通过这种特殊的结构排列实现的。此外，还研究了1和2的电化学，其氧化电流电压曲线类似于具有金属-金属σ键的[TPPInRe（CO）_5]（TPP =四苯基卟啉）的铟（III）-卟啉。这两个新分子在ns脉冲激光的作用下，在532 nm处也表现出较大的非线性光学吸收，并且是在可见光区域保护传感器的潜在光学限制材料。

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