Visible and NIR Photoluminescence Properties of a Series of Novel Lanthanide-Organic Coordination Polymers Based on Hydroxyquinoline-Carboxylate Ligands

被引：80

作者：

Gai, Yan-Li ^{[1
,2
]}

Xiong, Ke-Cai ^{[1
,2
]}

Chen, Lian ^{[1
]}

Bu, Yang ^{[1
,2
]}

Li, Xing-Jun ^{[1
,2
]}

Jiang, Fei-Long ^{[1
]}

Hong, Mao-Chun ^{[1
]}

机构：

[1] Chinese Acad Sci, Fujian Inst Res Struct Matter, State Key Lab Struct Chem, Fuzhou 350002, Peoples R China

[2] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China

来源：

INORGANIC CHEMISTRY | 2012年 / 51卷 / 24期

关键词：

ELECTRONIC-ENERGY LEVELS; HIGHLY LUMINESCENT; AQUO IONS; SOLID-STATE; COMPLEXES; INTENSITIES; ABSORPTION; EU(III); TB(III); SPECTRA;

D O I：

10.1021/ic301261g

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A series of novel two-dimensional (2D) lanthanide coordination polymers with 4-hydroxyquinoline-2-carboxylate (H(2)hqc) ligands, [Ln(Hhqc)(3)(H2O)](n)center dot 3nH(2)O (Ln = Eu (1), Tb (2), Sm (3), Nd (4), and Gd (5)) and [Ln(Hhqc)(ox)(H2O)(2)](n) (Ln = Eu (6), Tb (7), sm (8), Tm (9), Dy (10), Nd (11), Yb (12), and Gd (13); H(2)ox = oxalic acid), have been synthesized under hydrothermal conditions. Complexes 1-5 are isomorphous, which can be described as a two-dimensional (2D) hxl/Shubnikov network based on Ln(2)(CO2)(4) paddle-wheel units, and the isomorphous complexes 6-13 feature a 2D decker layer architecture constructed by Ln-ox infinite chains cross-linked alternatively by bridging Hhqc(-) ligands. The room-temperature photoluminescence spectra of complexes Eu-III (1 and 6), Tb-III (2 and 7), and Sm-III (3 and 8) exhibit strong characteristic emissions in the visible region, whereas Nd-III (4 and 11) and Yb-III (12) complexes display NIR luminescence upon irradiation at the ligand band. Moreover, the triplet state of H2hqc matches well with the emission level of Eu-III, Tb-III and Sm-III ions, which allows the preparation of new optical materials with enhanced luminescence properties.

引用

页码：13128 / 13137

页数：10

共 59 条

[1] Luminescent metal-organic frameworks [J].