A series of 1D chain assembled from squarate and 2,2’-bipyridine ligands： yntheses， structures， third-order nonlinear optical and fluorescent properties
HAO Rui1， XIAO Si2， JIANG Yongqiang2， ZHOU Jiangliang1， YAN Jun1
1.School of Chemistry and Chemical Engineering， Central South University， Changsha 410083， China；2.Department of Physics and Electronics， Central South University， Changsha 410083， China
Abstract：Three neutral one-dimensional coordination polymer 1， 2 and 3 [M(C4O4)(C10H8N2)(H2O)2]·2H2O (M＝Zn2＋ Cu2＋ or Cd2＋) have been synthesized by H2C4O4 and 2,2’-bipyridine co-ligands. All complexes have been characterized by elemental analysis， IR， single crystal X-ray diffraction， thermogravimetric analysis (TGA) and UV-vis spectra. All metal ions in the polymers have six coordinate pseudo octahedral structures with two pyridyl nitrogen atoms， two squarate oxygen atoms and two waters. The complexes with d10 metals exhibit a strong emission band with the maximum intensity at 374.5 nm and 464.5 nm. The third-order nonlinear optical (NLO) property of the Cu2＋ complex was also investigated by single beam Z-scan techniques.
2018, Vol. 52 
