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Aggregation-induced emission : ウィキペディア英語版 | Aggregation-induced emission
Aggregation-induced emission (AIE) is an abnormal phenomenon for organic luminophores. Most organic compounds have a planar structure and higher photoemission efficiency in solution than in solid states. However, some organic luminophores have rotation groups which consume energy after they are excited in solution. When these luminophores crystallize and the free rotation of groups is restricted in solid state, the photoemission efficiency becomes higher than in solution. The phenomenon that luminophores shows more enhancement of photoemission in solid state than in solution is called an aggregation-induced emission enhancement (AIEE). Some luminophores, e.g. diketopyrrolopyrrole-based luminophores, only show the enhancement of emission when forming crystals. That is, these luminophores exhibit crystallization-induced emission enhancement (CIEE). ==References==
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