Coordination polymer based on cyano: Synthesis, crystal structure, and fluorescence
作者:Zhen-Lan Fang、Jian-Gang He、Qiang Ju、Xiao-Yuan Wu、Can-Zhong Lu
DOI:10.1016/j.jssc.2010.05.011
日期:2010.7
One novel 2-D polythreading framework named as [Cu-3(CN)(3)(NH3)] (1), was obtained through the self-assembling of CuCN under hydrothermal reaction. It is remarkable that there is a 26-membered [Cu-10(CN)(8)] decanuclear metallamacrocycle with the effective size of ca. 16.8 x 6.83 angstrom(2) along the a-axis. These 2-D layers stack in an . .ABAB.. . staggered fashion, with the lateral (CN)Cu-3(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 and (3)[MMLCT] excited state, based on the result of DFPT calculation. (C) 2010 Elsevier Inc. All rights reserved.