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Updated: Apr 23, 2026

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A Technical Guide for Performing Spectroscopic Measurements on Metal-Organic Frameworks
Published on: April 28, 2023
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A ratiometric fluorescent pH sensor based on nanoscale metal-organic frameworks (MOFs) modified by europium(III)
1Department of Chemistry, Tongji University, Shanghai 200092, P. R. China. byan@tongji.edu.cn.
Abstract:
We report a new ratiometric fluorescent pH sensor based on postsynthetically modified nanoscale MOF-253. Two types of Eu(3+) 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 Eu(3+) is affected by the pH variation.
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