We developed and characterized four polyfluorinated bistolane derivatives. These compounds, which possess either two alkoxy substituents or an alkoxy group and a bromine atom in their two molecular terminals, were synthesized from readily available 4-alkoxy-1-ethynylbenzene with a facile three-step procedure. Their thermodynamic and photophysical properties were evaluated in detail, and they were found to display both liquid-crystalline (LC) and photoluminescence properties. Remarkably, the photoluminescence behaviors dramatically changed during the thermal phase transition between the crystal and LC phases. Thus, these polyfluorinated bistolanes may be promising candidates for thermoresponsive luminous molecules.

中文翻译：

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多氟化铋酚型发光液晶的热响应发光特性†

我们开发并表征了四种多氟联苯酚衍生物。这些化合物在两个分子末端都具有两个烷氧基取代基或一个烷氧基和一个溴原子，是通过容易的三步方法由易于获得的4-烷氧基-1-乙炔基苯合成的。详细评估了它们的热力学和光物理性质，发现它们同时显示液晶（LC）和光致发光性质。值得注意的是，在晶体和LC相之间的热相变过程中，光致发光行为发生了显着变化。因此，这些多氟化二苯乙烯醚可能是热响应发光分子的有前途的候选者。