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

✍ Scribed by Zhen-Lan Fang; Jian-Gang He; Qiang Ju; Xiao-Yuan Wu; Can-Zhong Lu

• Publisher: Elsevier Science
• Year: 2010
• Tongue: English
• Weight: 903 KB
• Volume: 183
• Category: Article
• ISSN: 0022-4596
• DOI: 10.1016/j.jssc.2010.05.011

✦ Synopsis

One novel 2-D polythreading framework named as [Cu 3 (CN) 3 (NH 3 )] (1), was obtained through the selfassembling 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 Â 6.83 Å2 along the a-axis. These 2-D layers stack in an Á Á ABAB Á Á Á staggered fashion, with the lateral {(CN)Cu 3 (NH 3 )} 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.