A novel fluorescent sensor with highly response of Cu2+ based on Eu3+ post-modified metal-organic framework in aqueous media

被引：13

作者：

Luo, Jun ^{[1
]}

Liu, Bao-Shu ^{[1
]}

Zhang, Xin-Rong ^{[1
]}

Liu, Rui-Ting ^{[2
]}

机构：

[1] Second Mil Med Univ, Sch Pharm, Shanghai 200433, Peoples R China

[2] Fudan Univ, Dept Chem, Songhu Rd 2005, Shanghai 200438, Peoples R China

来源：

JOURNAL OF MOLECULAR STRUCTURE | 2020年 / 1202卷

关键词：

MIL-116; Europium; Postsynthetic method; Detection; Copper cation; Aqueous solution; CRYSTAL-STRUCTURES; CATION-EXCHANGE; LUMINESCENCE; FE3+; SITES; PROBE; IONS; ENCAPSULATION; ADSORPTION; MOLECULES;

D O I：

10.1016/j.molstruc.2019.127347

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A unique 3D metal-organic framework Al-2(OH)(2)[C12O12H2]center dot 2H(2)O (MIL-116, C12O12H2 = benzene hexacarboxylate) with uncoordinated carboxylic groups was synthesized and structurally characterized. Then Eu3+ cations were encapsulate into the uncoordinated carboxylic groups of MIL-116 to form Eu3+ incorporated products Eu3+@MIL-116 by the postsynthetic modification (PSM) method. Eu3+@MIL-116 displays intense and sharp emission, characteristic of Eu3+ luminescence. It can detect Cu2+ selectively and sensitively (detection limit, 0.88 mu M) in aqueous solution due to a significant decrease of the Eu3+ luminescence intensity, and represents a rare Cu2+ fluorescent sensor based on europium-doped metal-organic frameworks formed by PSM method. (C) 2019 Elsevier B.V. All rights reserved.

引用

页数：5

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