Near‐Infrared and Dual Emissions of Diphenylamino Group‐Substituted Malachite Green Derivatives
Near‐Infrared and Dual Emissions of Diphenylamino Group‐Substituted Malachite Green Derivatives
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二苯氨基取代的孔雀石绿衍生物的近红外和双发射
DOI：
10.1002/ejoc.202200873
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发表时间：
2022
影响因子：
2.8
通讯作者：
Kuninobu Yoichiro
中科院分区：
文献类型：
--
作者：
Mori Toshiaki;Sekine Kohei;Kawashima Kyohei;Mori Toshifumi;Kuninobu Yoichiro
设计并合成了新的含二苯胺基的三芳基甲醇和三芳基甲基阳离子。三芳基甲基阳离子在甲苯溶液、固体膜状态和聚苯乙烯（PS）膜中表现出近红外（NIR）发射。三芳基甲基阳离子的发射强度在PS膜中最强。PS膜的相对量子产率随着二苯胺基数目的增加而增加。此外，由于三苯胺部分和/或羟基之间的分子间相互作用，三芳基甲醇在其聚集状态下表现出双重发射。这些发现是有趣的，因为在二甲基氨基取代的三芳基甲基阳离子（被称为“孔雀石绿色”）和相应的三芳基甲醇中分别没有观察到NIR和双重发射。
Novel triarylmethanols and triarylmethyl cations with diphenylamino groups were designed and synthesized. The triarylmethyl cations exhibited near‐infrared (NIR) emission in toluene solution, solid film state, and polystyrene (PS) film. The emission intensities of the triarylmethyl cations were strongest in the PS film. The relative quantum yield of the PS film increased as the number of diphenylamino groups increased. In addition, triarylmethanols exhibit dual emission in their aggregated state owing to the intermolecular interactions between triphenyl amine moieties and/or hydroxy groups. These findings are interesting because NIR and dual emissions are not observed in the dimethylamino group‐substituted triarylmethyl cation, which is referred to as the “malachite green,” and the corresponding triarylmethanol, respectively.