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. 2011 Apr 7;40(13):3112-5.
doi: 10.1039/c0dt01481h. Epub 2011 Feb 15.

Self-assembled molecular squares containing metal-based donor: synthesis and application in the sensing of nitro-aromatics

Affiliations

Self-assembled molecular squares containing metal-based donor: synthesis and application in the sensing of nitro-aromatics

Vaishali Vajpayee et al. Dalton Trans. .

Abstract

Self-assemblies between a linear Pt-based donor and ferrocene- chelated metallic acceptors produced novel heterometallic squares 4 and 5, which show fluorescence quenching upon the addition of nitro-aromatics.

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Figures

Fig. 1
Fig. 1
31P NMR spectra of the complexes 4 (left) and 5 (right).
Fig. 2
Fig. 2
X-ray crystal structure of 4 (left) and 5 (right). Color codes: yellow = Pd, green = Pt, brown = Fe, orange = P, gray = C. H-atoms are omitted for clarity and pertinent bond distances and angles are given in the text.
Fig. 3
Fig. 3
Emission quenching of 4 upon addition of the various guest molecules (1 × 10−4 M in THF). BA = benzoic acid, 2,4,6-TMP = 2,4,6-trimethylphenol, PG = phloroglucinol, 4-NB = 4-nitrobenzene, 1,3,5-TNB = 1,3,5-trinitrobenzene, PA = picric acid.
Fig.4
Fig.4
Emission quenching of complex 4 by picric acid and Stern-Volmer plot (inset).
Scheme 1
Scheme 1
Self-assembly of the heterometallic squares 4 and 5.

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