A Luminescent Probe for Highly Selective Cu2+ Sensing Using a Lanthanide‐Doped Metal Organic Framework with Large Pores. Issue 2 (27th December 2018)

• Record Type: Journal Article
• Authors: Liang, Yi‐Yu; Luo, Li‐Juan; Li, Yang; Ling, Bo‐Kai; Chen, Bao‐Wei; Wang, Xiao‐Wei; Luan, Tian‐Gang
• Is Part Of: European journal of inorganic chemistry. Issue 2(2019)
• Page Start: 206
• Page End: 211
• Publication Date: 2018-12-27
• Subjects: Luminescence -- Metal‐organic frameworks -- Porous materials -- Sensors -- Ion exchange; Chemistry, Inorganic -- Periodicals; Organometallic chemistry -- Periodicals; Bioinorganic chemistry -- Periodicals; Solid state chemistry -- Periodicals; 546
• DOI: 10.1002/ejic.201800945
• Languages: English
• ISSNs: 1434-1948

Abstract

Abstract : Metal‐organic frameworks (MOFs) are a class of porous coordination polymer. Recently, some studies have been focused on the detection of various analytes using luminescent MOFs. In this study, an MOF, Eu@1, is synthesized using ([Zn3 (TAPB)2 (CH3 OH)2 ]) (1 ) as a precursor to encapsulate Eu 3+ . It has large pores and excellent luminescent properties, and the quantum yield is up to 30.2%, which can be used as a luminescent probe for highly selective Cu 2+ sensing. It is simple and intuitive to use a lanthanide‐doped MOF for highly sensitive sensing of Cu 2+ by the change of emitting color (from red to blue). The inductively coupled plasma (ICP) and X‐ray photoelectron spectroscopy (XPS) data indicate that Cu 2+ can easily be exchanged with Eu 3+ in 1D channels and replace a portion of the central ions. The good luminescent properties and visible color detectable to the naked eye demonstrate the potential application of this probe in colorimetric detection. Abstract : Eu@1, which is obtained by post‐synthetic modification, as an excellent luminescent probe to detect Cu 2+ high selective through the emitting color changing from red to blue among 11 metal ions. The exploration of mechanism indicates Cu 2+ can replace Eu 3+ in the channels and small part of central ions without any structure disintegration of the framework.