Coordination polymer based on cyano: Synthesis, crystal structure, and fluorescence

Coordination polymer based on cyano: Synthesis, crystal structure, and fluorescence
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基于氰基的配位聚合物:合成、晶体结构和荧光

DOI:
10.1016/j.jssc.2010.05.011
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发表时间:
2010-07
期刊:
中华放射学杂志
影响因子:
--
通讯作者:
Lu, Can-Zhong
Lu, Can-Zhong
中科院分区:
其他
文献类型:
--
作者:
He, Jian-Gang;Ju, Qiang;Fang, Zhen-Lan;Wu, Xiao-Yuan;Lu, Can-Zhong

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通过水热反应自组装CuCN得到了一种新型的二维多线程骨架[Cu 3(CN)3(NH3)](1)。值得注意的是,存在一个26元[Cu_(10)(CN)_8]十核金属大环,其有效尺寸约为1.5 μ m。沿a轴方向为16.8× 6.83 × 2。这些2-D层以··ABAB···交错的方式堆叠,其中每个层的侧向{(CN)Cu 3(NH 3)}部分从两个相邻层插入到十核金属大环的空隙中。光学漫反射光谱和密度泛函理论计算结果表明,1是潜在的直接半导体材料。在室温固态下,1在紫外光照射下显示明亮的黄色荧光。根据DFPT计算结果,其发射激发态主要归因于LMCT、LLCT和3 [MMLCT]激发态。
One novel 2-D polythreading framework named as [Cu3(CN)3(NH3)] (1), was obtained through the self-assembling of CuCN under hydrothermal reaction. It is remarkable that there is a 26-membered [Cu10(CN)8] decanuclear metallamacrocycle with the effective size of ca. 16.8×6.83Å2along the a-axis. These 2-D layers stack in an ··ABAB···staggered fashion, with the lateral {(CN)Cu3(NH3)} moieties of each layer inserting into the voids of the decanuclear metallamacrocycles from two adjacent layers. Optical diffuse reflectance spectrum and the result of DFT calculation reveal that 1 is potential direct semiconducting material. In the solid state at room temperature, 1 shows bright yellow fluorescence under ultraviolet light illumination. Its emissive excited state is primarily attributed to the LMCT, LLCT and3[MMLCT] excited state, based on the result of DFPT calculation.
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