Solvo-thermal synthesis of a unique alkaline earth-transition Ba-Cd micro-porous coordination framework as hetero-metallic luminescent sensor for Cu2+ and real-time detection of benzaldehyde

Bin Ding; Dian Xue Ma; Hui Min Zhang; Xin Meng; Rong Rong Qiu; Rong Ren; Jie Wu; Xiang Xia Wu; Jian Zhong Huo; Yuan Yuan Liu; Xue Fang Shi

doi:10.1016/j.saa.2018.03.021

Solvo-thermal synthesis of a unique alkaline earth-transition Ba-Cd micro-porous coordination framework as hetero-metallic luminescent sensor for Cu²⁺ and real-time detection of benzaldehyde

Spectrochim Acta A Mol Biomol Spectrosc. 2018 Jun 15:199:110-116. doi: 10.1016/j.saa.2018.03.021. Epub 2018 Mar 9.

Authors

Affiliations

¹ Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry (Tianjin Normal University), Ministry of Education, Tianjin Key Laboratory of Structure and Performance for Functional Molecule, College of Chemistry, Tianjin Normal University, 393 Binshui West Road, Tianjin 300387, PR China; Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), College of Chemistry, Nankai University, Tianjin 300071, PR China; State Key Laboratory of Coordination Chemistry, Nanjing University, PR China. Electronic address: hxxydb@mail.tjnu.edu.cn.
² Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry (Tianjin Normal University), Ministry of Education, Tianjin Key Laboratory of Structure and Performance for Functional Molecule, College of Chemistry, Tianjin Normal University, 393 Binshui West Road, Tianjin 300387, PR China; Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), College of Chemistry, Nankai University, Tianjin 300071, PR China.

PMID: 29574312
DOI: 10.1016/j.saa.2018.03.021

Abstract

In this work a unique hetero-metallic alkaline earth-transition Ba-Cd luminescent micro-porous metal-organic framework {[BaCd(μ₆-tp)_1.5(μ₂-Cl)(H₂O) (DMF)₂]·0.75H₂O}_n (H₂tp=terephthalic acid) (1) has been prepared under solvo-thermal conditions. In 1 infinite 1D {Ba-X-Cd} (X=O, Cl) inorganic chains are linked via these full de-pronated tp^2- ligands forming a unique 3D I¹O² type micro-porous coordination framework. PXRD patterns of 1 have been determined confirming pure phases of 1. Luminescence investigations suggested that 1 exhibits highly selective and sensitive sensing for trace amounts of benzaldehyde in ethanol, which provides a facile method for real-time detection of benzaldehyde. Meanwhile 1 also exhibits highly selective and sensitive sensing for Cu²⁺ over other cations with high quenching efficiency K_sv value 1.15×10⁴L·mol^-1. As far as we know, 1 represents the first example of alkaline earth-transition hetero-metallic Ba-Cd micro-porous coordination framework as bi-functional luminescent probes for Cu²⁺ and benzaldehyde.

Keywords: Benzaldehyde; Bi-functional; Cu(2+); Hetero-metallic; Luminescent probe.