Turn-on and Ratiometric Luminescent Sensing of Hydrogen Sulfide Based on Metal-Organic Frameworks

被引：223

作者：

Zhang, Xin ^{[1
]}

Hu, Quan ^{[2
]}

Xia, Tifeng ^{[1
]}

Zhang, Jun ^{[1
]}

Yang, Yu ^{[1
]}

Cui, Yuanjing ^{[1
]}

Chen, Banglin ^{[1
,3
]}

Qian, Guodong ^{[1
]}

机构：

[1] Zhejiang Univ, State Key Lab Silicon Mat, Cyrus Tang Ctr Sensor Mat & Applicat, Sch Mat Sci & Engn, Hangzhou 310027, Peoples R China

[2] Hangzhou Normal Univ, Sch Med, Dept Pharm, Hangzhou 310036, Zhejiang, Peoples R China

[3] Univ Texas San Antonio, Dept Chem, San Antonio, TX 78249 USA

来源：

ACS APPLIED MATERIALS & INTERFACES | 2016年 / 8卷 / 47期

基金：

中国国家自然科学基金;

关键词：

metal-organic frameworks; turn-on; fluorescent probes; hydrogen sulfide; ratiometric sensing; WHITE-LIGHT EMISSION; FLUORESCENT-PROBE; H2S; MOF; SITES;

D O I：

10.1021/acsami.6b12118

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The sensing of hydrogen sulfide (H2S) has become a long-time challenging task. In this work, we developed a general strategy for sensing of H2S utilizing postsynthetic modification of a nano metal organic frameworks (MOF) UiO-66-(COOH)(2) with Eu3+ and Cu2+ ions. The nano MOF Eu3+/Cu2+@UiO-66-(COOH)(2) displays the characteristic Eu3+ sharp emissions and the broad ligand-centered (LC) emission simultaneously. Because H2S can strongly increase the fluorescence of Eu3+ and quench the broad LC emission through its superior affinity for Cu2+ ions, the MOF Eu3+/Cu2+@UiO-66(COOH)(2) exhibits highly sensitive turn-on sensing of H2S over other environmentally and biologically relevant species under physiological conditions. Furthermore, this approach for fluorescent turn-on sensing of H2S is expected to extend to other water-stable MOFs containing uncoordinated -COOH.

引用

页码：32259 / 32265

页数：7

共 55 条

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