Realizing ratiometric thermometers using single-component organic solid-state luminophores is attractive but challenging. Here, we synthesized a series of N,C-chelated tetra-coordinated organoboron compounds and characterized their structures. Among them, sample BN2Br can be used as a luminescent thermometer and exhibits a high temperature sensitivity (3.67% K^–1), a wide response range of 120–280 K, and good reversibility, which is mainly due to the temperature-dependent intermolecular stacking effect in the solid state. The proposed ratiometric thermometry protocol may provide new insights for developing photonic thermometers.

中文翻译：

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基于 N，C 螯合四配位有机硼化合物的高灵敏度固体比例式发光温度计


使用单组分有机固态发光团实现比率式温度计很有吸引力，但也具有挑战性。在这里，我们合成了一系列 N，C 螯合的四配位有机硼化合物并表征了它们的结构。其中，样品 BN2Br 可用作发光温度计，表现出较高的温度灵敏度 （3.67% ^K-1）、120-280 K 的宽响应范围和良好的可逆性，这主要是由于固态中与温度相关的分子间堆叠效应。提出的比率测温协议可能为开发光子温度计提供新的见解。