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Luminescent Ratiometric Thermometers Based on a 4f–3d Grafted Covalent Organic Framework to Locally Measure Temperature Gradients During Catalytic Reactions
Author(s) -
Kaczmarek Anna M.,
Jena Himanshu Sekhar,
Krishnaraj Chidharth,
Rijckaert Hannes,
Veerapandian Savita K. P.,
Meijerink Andries,
Van Der Voort Pascal
Publication year - 2021
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.202013377
Subject(s) - lanthanide , luminescence , catalysis , covalent bond , thermometer , grafting , solvent , metal organic framework , metal ions in aqueous solution , materials science , chemistry , metal , porosity , ion , inorganic chemistry , nanotechnology , photochemistry , chemical engineering , polymer chemistry , organic chemistry , adsorption , polymer , optoelectronics , physics , quantum mechanics , engineering
Covalent Organic Frameworks (COFs), an emerging class of crystalline porous materials, are a new type of support for grafting lanthanide ions (Ln 3+ ), which can be employed as ratiometric luminescent thermometers. In this work we have shown that COFs co‐grafted with lanthanide ions (Eu 3+ , Tb 3+ ) and Cu 2+ (or potentially other d‐metals) can synchronously be employed both as a nanothermometer and catalyst during a chemical reaction. The performance of the thermometer could be tuned by changing the grafted d‐metal and solvent environment. As a proof of principle, the Glaser coupling reaction was investigated. We show that temperature can be precisely measured during the course of the catalytic reaction using luminescence thermometry. This concept could be potentially easily extended to other catalytic reactions by grafting other d‐metal ions on the Ln@COF platform.