Temperature-dependent luminescence of polymer compositions doped with boron difluoride β-diketonates has been investigated. At room temperature, the luminescence of the samples is yellow-green, and it becomes blue when heated. The mechanism of the temperature-dependent luminescence consists in the dissociation of J-aggregates of dyes at heating. The process of dissociation of J-aggregates is reversible. These boron difluoride β-diketonates have the potential in wide-range applications in the field of temperature sensing.Trial registration number Date of registration
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