Development of Emissive Ionic Liquid Gels Having Thermal Response

制备了含五氟环磷腈结构的发射离子液体(PFCP-IL)与聚甲基丙烯酸甲酯(PMMA)或聚氯乙烯(PVC)组成的透明离子液体凝胶。我们发现，当凝胶被加热然后冷却到室温时，它们在室温下的PFCP-IL的发射强度比原来的凝胶要强。我们称这种现象为“热致发射增强”。我们阐明了热致发射增强的机理可以归因于PFCP-IL在聚合物链中的聚集。基于所得到的机理，我们成功地制备了四种凝胶，它们在加热温度为10℃时，从90℃到120℃的温度区间内表现出发射增强。这些凝胶有望作为监测材料热温度的发射传感器应用。

The transparent ionic liquid gels consisting of emissive ionic liquid (PFCP-IL) having pentafuluorocyclophosphazene moiety and poly(methyl methacrylate) (PMMA) or polyvinyl chloride (PVC) were prepared. We found that when the gels were heated and then cooled to room temperature, the intensity of emission from PFCP-IL in them at room temperature was enhanced than that of original one. We call the phenomena "thermally induced emission enhancement". We clarified that the mechanism of thermally induced emission enhancement can be attributed to the aggregation of PFCP-IL in polymer chains. Based on the obtained mechanism, we succeeded in the preparation of four kinds of gels showing the emission enhancement at a heat temperature of 10 cetigrade temperature interval from 90 cetigrade temperature to 120 cetigrade temperature . These gels can be expected to an application as an emission sensor for monitoring heat temperature of materials.