Details

Autor(en) / Beteiligte

• Zhao, Ning
• Deng, Yue-E
• Liu, Ping
• An, Cai-Xia
• Wang, Tian-Xi
• Lian, Zhao-Xun

Titel

Syntheses, structures and third-order nonlinear optical properties of three coordination polymers based on bis(imidazol-l-yl-methyl)benzene and aromatic dicarboxylic ligands

Ist Teil von

• Polyhedron, 2015-01, Vol.85, p.607-614

Ort / Verlag

Elsevier Ltd

Erscheinungsjahr

2015

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Three novel transition metal coordination polymers have been reported. Their third-order nonlinear optical properties were determined by the Z-scan technique in DMSO solution. The hyperpolarizability γ′ is 1.43×10−29 for 1, 2.63×10−29 for 2 and 7.58×10−29esu for 3. [Display omitted] Three novel Zn(II) and Ni(II) coordination polymers, {Zn(BDA)(1,4-bib)}n (1), {Ni(BDA)(1,4-bib)}n (2) and {[Ni(H2O)2(1,2-bib)2](HBDA)2}n (3) (H2BDA=1,2-benzenedicarboxylate; 1,4-bib=1,4-bis(imidazol-l-yl-methyl)benzene; 1,2-bib=1,2-bis(imidazol-l-yl-methyl)benzene), have been synthesized and characterized by X-ray diffraction. Compound 1 exhibits a 4-connected 3D framework with a 66 topology, which is comprised of Zn(II) ions, 1,4-bib and BDA ligands. Compound 2 possesses a 2D framework with a 63 topology, which contains 26-membered metallocyclic rings. In 3, each Ni(II) ion is coordinated by four 1,2-bib ligands, resulting in 2D grid sheets. Two symmetry-related HBDA− ions are located in the grids in a head-to-head fashion. Their third-order nonlinear optical (NLO) properties were determined by the Z-scan technique in DMSO solution. Compounds 1, 2 and 3 show NLO absorption with absorptive coefficients, β(MKS), of 3.55×10−11, 9.38×10−11 and 1.14×10−10mW−1. Compound 1 exhibits a strong self-focusing effect with a refractive index, γ(MKS), of 6.54×10−18m2W−1. The third-order NLO susceptibility χ(3) of the three compounds were calculated to be 0.95×10−11, 2.06×10−11 and 2.51×10−11esu, respectively. The hyperpolarizability γ′ is 1.43×10−29 for 1, 2.63×10−29 for 2 and 7.58×10−29esu for 3.