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Polyfunctional Lewis Acids: Intriguing Solid-State Structure and Selective Detection and Discrimination of Nitroaromatic Explosives.
- Source :
-
Chemistry - A European Journal . Jun2015, Vol. 21 Issue 24, p8874-8882. 9p. - Publication Year :
- 2015
-
Abstract
- Synthesis and crystal structures of three porphyrin-based polyfunctional Lewis acids 1- 3 are reported. Intermolecular HgCl ⋅⋅⋅HgCl (linear and μ-type) interactions in the solid state of the peripherally ArHgCl-decorated compound 3 lead to a fascinating 3D supramolecular architecture. Compound 3 shows a selective fluorescence quenching response to picric acid and discriminates other nitroaromatic-based explosives. For the first time, an electron-deficient polyfunctional Lewis acid is shown to be useful for the selective detection and discrimination of nitroaromatic explosives. The Stern-Volmer quenching constant and detection limits of compound 3 for picric acid are the best among the reported small-molecular receptors for nitroaromatic explosives. The electronic structure, Lewis acidity, and selective sensing characteristics of 3 are well corroborated by DFT calculations. [ABSTRACT FROM AUTHOR]
- Subjects :
- *CHEMICAL synthesis
*LEWIS acids
*EXPLOSIVES
*CRYSTAL structure
*PORPHYRINS
Subjects
Details
- Language :
- English
- ISSN :
- 09476539
- Volume :
- 21
- Issue :
- 24
- Database :
- Academic Search Index
- Journal :
- Chemistry - A European Journal
- Publication Type :
- Academic Journal
- Accession number :
- 102916516
- Full Text :
- https://doi.org/10.1002/chem.201500727