By leveraging natural saturated fatty acids with distinct melting points and swift reversible phase transitions, we correlated external thermal cues to monomer and excimer emissions of difluoroboron β-diketonate fluorophores. This integration yielded a ratiometric fluorescent thermometer showcasing unparalleled sensitivity and thermochromism in the physiological temperature range.
W. Feng, Y. Wu, D. Chen, S. Lu, Y. Zhao and H. Yan, Chem. Commun., 2023, 59, 14823 DOI: 10.1039/D3CC04441F
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