NDLI: Mixed ligand two dimensional Cd(II)/Ni(II) metal organic frameworks containing dicarboxylate and tripodal N-donor ligands: Cd(II) MOF is an efficient luminescent sensor for detection of picric acid in aqueous media

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Suresh, Eringathodi Rachuri, Yadagiri Bisht, Kamal Kumar Parmar, Bhavesh
Description	Author Affiliation: Rachuri Y ( Analytical Division and Centralized Instrument Facility, CSIR-Central Salt and Marine Chemicals Research Institute, Council of Scientific and Industrial Research, G. B. Marg, Bhavnagar - 364 002, Gujarat, India. esuresh@csmcri.org sureshe123@rediffmail.com and Academy of Scientific and Innovative Re); Parmar B ( Analytical Division and Centralized Instrument Facility, CSIR-Central Salt and Marine Chemicals Research Institute, Council of Scientific and Industrial Research, G. B. Marg, Bhavnagar - 364 002, Gujarat, India. esuresh@csmcri.org sureshe123@rediffmail.com and Academy of Scientific and Innovative Re); Bisht KK ( Analytical Division and Centralized Instrument Facility, CSIR-Central Salt and Marine Chemicals Research Institute, Council of Scientific and Industrial Research, G. B. Marg, Bhavnagar - 364 002, Gujarat, India. esuresh@csmcri.org sureshe123@rediffmail.com and Department of Chemistry, University of); Suresh E ( Analytical Division and Centralized Instrument Facility, CSIR-Central Salt and Marine Chemicals Research Institute, Council of Scientific and Industrial Research, G. B. Marg, Bhavnagar - 364 002, Gujarat, India. esuresh@csmcri.org sureshe123@rediffmail.com and Academy of Scientific and Innovative Re)
Abstract	Two dimensional metal organic frameworks (MOFs) $[Cd(5-BrIP)(TIB)]_{n}$ (1) and $[Ni_{2}(5-BrIP)_{2}(TIB)_{2}]_{n}$ (2), involving the aromatic polycarboxylate ligand 5-bromo isophthalic acid $(H_{2}BrIP),$ flexible tripodal ligand 1,3,5-tris(imidazol-1-ylmethyl)benzene (TIB) and Cd(II)/Ni(II) metal nodes have been synthesized by different methods. These compounds were characterized by various analytical methods, and variable temperature X-ray diffraction data showed thermal stability of both MOFs up to 350 °C. Phase purity as well as water stability of the MOFs were established by powder X-ray diffraction, and the structural diversity of the compounds were investigated by single-crystal X-ray diffraction. Both the MOFs are mixed ligand 2D nets, and the topology of the network can be described as a binodal 3,5-c connected net with 3,5L2 topology having the point symbol $\{4^{2}·6^{7}·8\}\{4^{2}·6\}.$ Sensing of picric acid [2,4,6-trinitrophenol, TNP] by luminescence quenching among a large range of nitroanalytes in aqueous phase by the Cd(II) luminescent MOF (LMOF) were been investigated. Structural studies on 1:1 co-crystals (CC1) of TIB and TNP were carried out. The selective and sensitive fluorescence quenching response of 1 towards electron-deficient TNP over other nitro analytes in aqueous phase was demonstrated by fluorescence quenching titration. Concomitant occurrence of electron transfer/energy transfer processes and electrostatic interaction favours the selective sensing of TNP. A Cd(II) LMOF (1)-coated paper strip that we developed demonstrated fast and selective response to TNP, by the complete quenching of the blue fluorescence upon excitation of the paper strip at 365 nm radiation in its presence.
ISSN	14779226
Issue Number	18
Journal	Dalton Trans.
Volume Number	45
e-ISSN	13645447
Language	English
Publisher	Royal Society of Chemistry
Publisher Date	2016-05-04
Publisher Place	Great Britain (UK)
Access Restriction	Subscribed
Subject Keyword	Chemistry
Content Type	Text
Resource Type	Article
Subject	Inorganic Chemistry

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