Thermochromism of Organic Crystals
Thermochromism of Organic Crystals
复制标题
有机晶体的热致变色
DOI：
10.5940/jcrsj.43.27
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发表时间：
2001
期刊：
影响因子：
--
通讯作者：
J. Harada
中科院分区：
文献类型：
--
作者：
K. Ogawa;J. Harada
物质颜色随温度变化而发生的可逆变化被称为热致变色现象，长期以来引起了化学家的极大兴趣。水杨基苯胺属于一类在固态下表现出热致变色的最流行的化合物。我们最近首次成功观察到与热致变色相关的晶体结构变化，并确定了有色形式的结构。此外，我们发现水杨基苯胺在饱和烃溶剂的流体溶液中通常是热致变色的，尽管人们相信水杨基苯胺仅在固态下是热致变色的。我们的研究表明，分子的缔合在热致变色中起着至关重要的作用。
Reversible change in color of substances with variation of the temperature is known as thermochromism and has attracted much interest from chemist for a long time. Salicylideneanilines belong to a class of the most popular compounds that show thermochromism in the solid state. We recently succeeded for the first time in the observation of the crystal structure change associated with the thermochromism and in the determination of the structure of the colored form. Furthermore, we discovered that salicylideneanilines are generally thermochromic in the fluid solution of a saturated hydrocarbon solvent, although it has been believed that salicylideneanilines are thermochromic only in the solid state. Our study revealed that the association of the molecules plays an essential role in the thermochromism.