消旋[n]螺旋芴(n=3-5,7)在四氢呋喃和二甲基亚砜溶液中光激发态的磁圆偏振发光。
Magnetic Circularly Polarized Luminescence in the Photoexcited States of Racemic [n]Helicenes (n=3-5,7) in Tetrahydrofuran and Dimethyl Sulfoxide Solutions.
机构信息
Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka, 577-8502, Japan.
Graduate School of Engineering, Tokyo Denki University, 5 Senju-Asahi-cho, Adachi-ku, Tokyo, 120-8551, Japan.
出版信息
Chemphyschem. 2021 Oct 14;22(20):2058-2062. doi: 10.1002/cphc.202100346. Epub 2021 Aug 19.
This paper reports the first magnetic circularly polarized luminescence (MCPL) characteristics of racemic helicenes, including four unsubstituted [n]helicenes (n=3,4,5,7) and two [4]helicene derivatives bearing methoxy substituents, in tetrahydrofuran (THF) and dimethyl sulfoxide (DMSO) solutions. The value of |g | was calculated to be of the order of 10 T within 350-430 nm under the north-up (N-up) and south-up (S-up) Faraday geometries in an external magnetic field of 1.6 T. The [n]-dependent MCPL signs were altered by the N-up and S-up geometries.
本文报道了外消旋螺旋芳烃的首例磁圆二色发光（MCPL）特性，包括四个未取代的[n]螺旋芳烃（n=3、4、5、7）和两个带有甲氧基取代基的[4]螺旋芳烃衍生物，在四氢呋喃（THF）和二甲基亚砜（DMSO）溶液中。在 1.6 T 的外磁场下，采用北向上（N-up）和南向上（S-up）法拉第几何形状，在 350-430nm 范围内，|g |的值计算为 10 T 量级。N-up 和 S-up 几何形状改变了[n]依赖的 MCPL 符号。
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