4.6 Article

Porphyrinic zirconium-based MOF with exposed pyrrole Lewis base site as a luminescent sensor for highly selective sensing of Cd2+ and Br- ions and THF small molecule

Journal

JOURNAL OF SOLID STATE CHEMISTRY
Volume 282, Issue -, Pages -

Publisher

ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jssc.2019.121103

Keywords

Zr-based MOF; Fluorescent sensor; Cd2+ cation; Br- anion; THF molecule

Funding

  1. Iran University of Science and Technology
  2. Iran's National Elites Foundation

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In this study, with meso-tetra(4-carboxyphenyl)porphyrin (TCPP) as the ligand, a unique zirconium-based metal-organic framework, namely PCN-224, has been prepared and used as a fluorescent sensor for sensitive and selective recognition of cations, anions, and small organic molecules. During metal ions detection, PCN-224 displays fluorescence enhancing towards Cd2+ cation. More interestingly, this is the first report of MOF-based sensors for detecting Br- via fluorescence enhancement mechanism. Furthermore, the prepared PCN-224 can perform as fluorescence turn-off sensor for highly sensitive detection of THF in methanol solution. Therefore, this work presents a Zr-based MOF sensor towards the detection of Cd2+ cation, Br- anion and THF small molecule with quick response, significant sensitivity and desirable selectivity.

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