Front Cover: Solid‐State Thermochromic Luminescence through Twisted Intramolecular Charge Transfer and Excimer Formation of a Carborane−Pyrene Dyad with an Ethynyl Spacer (Asian J. Org. Chem. 12/2017),Asian Journal of Organic Chemistry

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Front Cover: Solid‐State Thermochromic Luminescence through Twisted Intramolecular Charge Transfer and Excimer Formation of a Carborane−Pyrene Dyad with an Ethynyl Spacer (Asian J. Org. Chem. 12/2017)
Asian Journal of Organic Chemistry ( IF 2.8 ) Pub Date : 2017-12-04 , DOI: 10.1002/ajoc.201700647
Kenta Nishino ₁ , Hideki Yamamoto ₁ , Kazuo Tanaka ₁ , Yoshiki Chujo ₁

Affiliation

Orange to green at 77 K: An o‐carborane–pyrene dyad with an ethynyl spacer group has been synthesized. Based on optical measurements, it was found that the o‐carborane dyad can exhibit solid‐state emission as well as thermochromic luminescence between orange and green. This reversible change occurred due to the switching of the emission mechanism between intramolecular charge transfer and excimer formation. This study demonstrates that the o‐carborane–ethynyl unit can play a significant role in suppression of concentration quenching without disturbance to the excimer formation. More information can be found in the Full Paper by Kazuo Tanaka and Yoshiki Chujo et al. on page 1818 in Issue 12, 2017 (DOI: 10.1002/ajoc.201700390).

中文翻译：

封面：通过扭曲的分子内电荷转移和带有乙炔基间隔基的碳硼烷-Dy二聚体的准分子形成而产生的固态热致变色发光（Asian J. Org。Chem。12/2017）

在77 K时呈橙色至绿色：合成了带有乙炔基间隔基的邻-甲硼烷-re二联体。根据光学测量，发现邻-甲硼烷二聚体可以表现出固态发射以及橙色和绿色之间的热致变色发光。由于分子内电荷转移和受激准分子形成之间的发射机理的切换，发生了这种可逆的变化。这项研究表明，邻-碳硼烷-乙炔基单元可以在抑制浓度猝灭中发挥重要作用，而不会干扰受激准分子的形成。有关更多信息，请参见田中一雄（Kazuo Tanaka）和中田佳树（Yoshiki Chujo）等人的《全文》。在2017年第12期第1818页 （DOI：10.1002 / ajoc.201700390）。

更新日期：2017-12-04

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