In situ synthesis and ferroelectric, SHG response, and luminescent properties of a novel 3D acentric zinc coordination polymer.
The 3D acentric metal-organic framework (MOF) of [Zn(Mitz)Cl](n) [1; Mitz = 3-tetrazolyl-6-methyl-5-(4-pyridyl)-2-pyridone] was obtained from in situ [2 + 3] cycloaddition reactions of milrinone [=3-cyano-6-methyl-5-(4-pyridyl)-2-pyridone] with sodium azide in the presence of ZnCl(2) as the Lewis acid. The compound is a typical ferroelectric material with an electric hysteresis loop showing a remnant polarization (P(r)) of ca. 0.21 μC/cm(2) and a coercive field (E(c)) of 2600 V/cm. Powdered samples of 1 display strong second-harmonic-generation responses of ∼2 times larger than that of KH(2)PO(4). Photoluminescent study show that complex 1 and the milrinone ligand exhibit maximal emission peaks at around 409 and 401 nm, respectively, in the solid state at room temperature.
School of Metallurgy and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou, 341000, People's Republic of China. tangyunzhi75@163.com
Yun-Zhi
YZ
Tang
Man
M
Zhou
Jun
J
Huang
Yu-Hui
YH
Tan
Ji-si
JS
Wu
He-Rui
HR
Wen