An uncommon 3D (3,8)-connected metal-organic framework: Luminescence sensing and photocatalytic properties
Abstract
A new tripodal carboxylic ligand, 2-(4-carboxylphenoxy) terephthalic acid (H3L2), readily reacts with Zn(II) salt in the presence of 4,4‧-bipyridine (4,4‧-bipy) to afford a new metal-organic framework of {Zn3(L2)2(μ2-H2O)(4,4‧-bipy)}n (1). 1 shows 3D two-fold interpenetrating network with (3,8)-connected tfz-d topology. 1 exhibits impressive pH stability and strong luminescence, making it an excellent candidate as a fluorescent chemical sensor. It is extremely responsive to toxic heavy metal ion (Hg2+) and TNT explosive. Importantly, 1 as the luminescent probe of Hg2+ can be simply and quickly regenerated, which represents a rare example in reported luminescent sensors of Hg2+. Furthermore, the photocatalytic property of 1 for degradation of the Rhodamine B (RhB) has been examined.
- Publication:
-
Journal of Solid State Chemistry France
- Pub Date:
- June 2018
- DOI:
- 10.1016/j.jssc.2018.03.031
- Bibcode:
- 2018JSSCh.262..256W
- Keywords:
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- Fluorescence sensing;
- Photocatalysis;
- Mercury ion;
- Nitroaromatics