A new Tb(iii)-functionalized layer-like Cd MOF as luminescent probe for high-selectively sensing of Cr3

A new layer-like metal–organic framework {[Cd4(NDIC)4·5DMF·H2O]DMF}n (NDIC = 5-(5-norbonene-2,3-dicarboximide) isophthalic acid) was synthesized by solvothermal method. It was used as a parent framework to encapsulate Tb3+ cations in Cd-MOF. The obtained composite Tb(3+)@Cd-MOF exhibited excellent l...

Full description

Saved in:
Bibliographic Details
Published in:CrystEngComm 2017-12, Vol.19 (48), p.7270-7276
Main Authors: Wang, Yi, Yang, Huan, Cheng, Gang, Wu, Yunying, Lin, Shaomin
Format: Article
Language:English
Subjects:
Luminescence
Metal-organic frameworks
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A new layer-like metal–organic framework {[Cd4(NDIC)4·5DMF·H2O]DMF}n (NDIC = 5-(5-norbonene-2,3-dicarboximide) isophthalic acid) was synthesized by solvothermal method. It was used as a parent framework to encapsulate Tb3+ cations in Cd-MOF. The obtained composite Tb(3+)@Cd-MOF exhibited excellent luminescence and produced a remarkable quenching effect in the luminescence emission of Tb3+ upon the introduction of Cr3+. Subsequently, Tb(3+)@Cd-MOF was developed as a highly selective and sensitive probe for detection of Cr3+. In particular, the luminescence probe of Cr3+ had a low detection limit (7.5 × 10−8 M), a broad linear range (1 × 10−7–5 × 10−6 M). A paper strip coated with Tb(3+)@Cd-MOF was also shown to be highly selective to Cr3+ under the irradiation of 254 nm UV light of by the naked eyes. This is the first example for detecting metal ions based on a lanthanide functionalized new metal–organic framework (MOF).
ISSN:1466-8033
DOI:10.1039/c7ce01795b