Liquid Bisazobenzenes as Molecular Solar Thermal Fuel with Enhanced Energy Density
Liquid Bisazobenzenes as Molecular Solar Thermal Fuel with Enhanced Energy Density
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DOI：
10.1246/cl.210822
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发表时间：
2022-04-01
影响因子：
1.6
通讯作者：
Kimizuka, Nobuo
中科院分区：
文献类型：
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作者：
Morikawa, Masa-aki;Yamanaka, Yuta;Kimizuka, Nobuo
含间双偶氮苯单元的液体分子太阳能热燃料是近年来发展起来的一种新型太阳能热燃料。在溶液和纯净液体中均能观察到高效的E-Z光异构化反应，Z异构体的热稳定性与偶氮苯衍生物相当。液体间双偶氮苯的储热容量(230-262J/g)大于以前报道的液体偶氮苯太阳能热燃料的储热容量(168J/g)。这项工作为提高凝聚分子太阳能热燃料的重量能量密度提供了新的设计指南。
Liquid molecular solar thermal fuels containing m-bisazobenzene units are newly developed. Efficient E-Z photoisomerization was observed both in solutions and in neat liquids, with the thermal stability of Z isomers comparable to those of azobenzene derivatives. The heat storage capacities of liquid m-bisazobenzenes (230-262 J/g) are larger than that previously reported for a liquid azobenzene solar thermal fuel (168 J/g). This work provides a new design guideline for enhancing gravimetric energy density in condensed molecular solar thermal fuels.