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Construction of ZnII/CdII-CPs and their fluorescent detection for Fe3+, Cr2O72− and TNP in water via luminescence quenching.
- Source :
- CrystEngComm; 5/14/2023, Vol. 25 Issue 18, p2728-2738, 11p
- Publication Year :
- 2023
-
Abstract
- Five new Zn<superscript>II</superscript>/Cd<superscript>II</superscript> coordination polymers (CPs) based on a flexible bis(imidazole) ligand 9,10-bis((2-methyl-1H-imidazol-1-yl)methyl)anthracene (bmima) with three different aromatic carboxylic acid ligands have been synthesized under solvothermal conditions: {[Cd(bmima)<subscript>0.5</subscript>(atp)(H<subscript>2</subscript>O)]·DMF·0.5H<subscript>2</subscript>O} (CP 1), {[Zn(bmima)(atp)]·DMF} (CP 2), {[Cd(bmima)(bpdc)]·2DMF} (CP 3), and {[M(bmima)<subscript>0.5</subscript>(oda)]·DMF·H<subscript>2</subscript>O} (M = Zn for CP 4 and Cd for CP 5), (H<subscript>2</subscript>atp = 2-aminoterephthalic acid; H<subscript>2</subscript>bpdc = [1,1′-biphenyl]-4,4′-dicarboxylic acid and H<subscript>2</subscript>oda = 4,4′-oxydibenzoic acid). CP 1 displays a 3,4-connected TiSc topology 3D framework with vertex symbols of {4<superscript>2</superscript>·6·10<superscript>2</superscript>·12}{4<superscript>2</superscript>·6}. CP 2 and CP 3 both feature 2D layer structures with a five-fold interpenetration framework for CP 3. CP 4 and CP 5 both show a 3D "pillar-layer" structure with pcu α-Po topology. The structural differences of the five CPs may be due to the diverse coordination modes of dicarboxylate ligands and the conformation of flexible N-donor ligands. Moreover, CP 1 and CP 3 are two good fluorescent sensors for the detection of Fe<superscript>3+</superscript>, Cr<subscript>2</subscript>O<subscript>7</subscript><superscript>2−</superscript> and TNP. The mechanism of the two sensors shows that the fluorescent sensing process toward Fe<superscript>3+</superscript> and Cr<subscript>2</subscript>O<subscript>7</subscript><superscript>2−</superscript> is mainly attributed to the competitive absorption process, while both competitive absorption and the more efficient FRET mechanism for TNP, respectively, which indicates that CP 1 and CP 3 can serve as two fluorescence sensors to sensitively and selectively detect the presence of Fe<superscript>3+</superscript> and Cr<subscript>2</subscript>O<subscript>7</subscript><superscript>2−</superscript> in water. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14668033
- Volume :
- 25
- Issue :
- 18
- Database :
- Complementary Index
- Journal :
- CrystEngComm
- Publication Type :
- Academic Journal
- Accession number :
- 163579766
- Full Text :
- https://doi.org/10.1039/d3ce00135k