Luminescent microporous metal–organic framework with functional lewis basic sites on the pore surface: specific sensing and removal of metal ions

Jayaramulu, Kolleboyina ; Narayanan, Raghu Pradeep ; George, Subi J. ; Maji, Tapas Kumar (2012) Luminescent microporous metal–organic framework with functional lewis basic sites on the pore surface: specific sensing and removal of metal ions Inorganic Chemistry, 51 (19). pp. 10089-10091. ISSN 0020-1669

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Official URL: https://pubs.acs.org/doi/abs/10.1021/ic3017547

Related URL: http://dx.doi.org/10.1021/ic3017547

Abstract

A three-dimensional luminescent metal–organic framework, {Mg(DHT)(DMF)2}n (1), based on an excited-state intramolecular proton-transfer (ESIPT) responsive linker, 2,5-dihydroxyterephthalic acid (H2DHT), has been synthesized, and its desolvated microporous framework with pendent −OH groups on the pore surface was exploited for the binding and specific sensing of metal ions via Lewis acid–base interactions. The luminescence intensity significantly quenches with CuII among various s- and d-block metal ions, and highly selective sensing of CuII ions has been realized in both solid and solution states (up to nanomolar concentration). The immobilized CuII metal ions can be selectively removed by chelating agents like ethylenediaminetetraacetic acid without any structural disintegration of the framework, as revealed by the luminescence and gas-adsorption studies.

Item Type:Article
Source:Copyright of this article belongs to American Chemical Society.
ID Code:114091
Deposited On:30 May 2018 06:02
Last Modified:30 May 2018 06:02

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