4.7 Article

A ratiometric fluorescent pH sensor based on nanoscale metal-organic frameworks (MOFs) modified by europium(III) complexes

Journal

CHEMICAL COMMUNICATIONS
Volume 50, Issue 87, Pages 13323-13326

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c4cc05508j

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Funding

  1. National Natural Science Foundation of China [91122003]
  2. Developing Science Funds of Tongji University

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We report a new ratiometric fluorescent pH sensor based on post-synthetically modified nanoscale MOF-253. Two types of Eu3+ with different characteristic excitation wavelength are realized in MOF-253 by a postsynthetic method (PSM). The pH sensor requires no calibration because only one of the two types of Eu3+ is affected by the pH variation.

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