The light-induced spin transition of tetranuclear spin crossover complex [Fe4(CN)4(bpy)4(tpa)2](PF6)4
The light-induced spin transition of tetranuclear spin crossover complex [Fe4(CN)4(bpy)4(tpa)2](PF6)4
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DOI：
10.1088/1742-6596/148/1/012033
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发表时间：
2009-02
期刊：
影响因子：
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通讯作者：
Taishi Nishihara;M. Nihei;H. Oshio;Koichiro Tanaka
中科院分区：
文献类型：
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作者：
Taishi Nishihara;M. Nihei;H. Oshio;Koichiro Tanaka
本文报道了四核自旋交叉络合物[Fe4(CN)4(Bpy)4(Tpa)2](PF6)4的光致自旋跃迁。红光照射(1.79 eV)使Fe2从低自旋态完全转变为高自旋态。绿光(2.33 eV)只能将半个Fe2转变为高自旋态，但光转化初期的转化率远高于红光。我们提出了一个简单的模型，在该模型中，由于剩余的三个FeII离子(Fe1，Fe3和Fe4)，光转化动力学受大的背景吸收控制。
We report on the light induced spin transition in the tetranuclear spin crossover complex [Fe4(CN)4(bpy)4(tpa)2](PF6)4. The photo-conversion occurs at the specific site (Fe2) of four FeII ions. The red light irradiation (1.79 eV) gives rise to full conversion of Fe2 into the high spin state from the low spin state. The green light irradiation (2.33 eV) can convert only the half of Fe2 into the high spin state, though the photo-conversion rate in the beginning is much higher than that with the red light. We present a simple model in which the photo-conversion kinetics is controlled by a large background absorption due to remaining three FeII ions (Fe1, Fe3 and Fe4).