Photoliquefiable Ionic Crystals: A Phase Crossover Approach for Photon Energy Storage Materials with Functional Multiplicity
作者:Keita Ishiba、Masa-aki Morikawa、Chie Chikara、Teppei Yamada、Katsunori Iwase、Mika Kawakita、Nobuo Kimizuka
DOI:10.1002/anie.201410184
日期:2015.1.26
brings the azobenzene ICs further significance as photon energy storage materials. The cis‐IL shows thermally induced crystallization to the trans‐IC phase. This transition is accompanied by exothermic peaks with a total ΔH of 97.1 kJ mol−1, which is almost double the conformational energy stored in cis‐azobenzene chromophores. Thus, the integration of photoresponsive ILs and self‐assembly pushes the
偶氮苯衍生物的离子晶体(IC)在紫外线照射下显示出光诱导的IC离子液体(IL)相变(光液化),并且所得的顺式偶氮苯ILs通过可见光可逆地光结晶。IC的光液化在环境温度下伴随着离子电导率的显着增加。光液化还使偶氮苯IC作为光子储能材料具有更大的意义。顺式-IL显示出热诱导的结晶至反式-IC相。这种转变伴随着放热峰,总ΔH为97.1 kJ mol -1,几乎是顺式偶氮苯生色团中存储的构象能量的两倍。因此,光敏性IL和自组装的集成推动了太阳能热电池的极限。