基于芘基修饰的环糊精的主客体包络诱导聚集用于增强电子圆二色性和圆偏振发光。
Host-Guest Complexation-Induced Aggregation Based on Pyrene-Modified Cyclodextrins for Improved Electronic Circular Dichroism and Circularly Polarized Luminescence.
机构信息
Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, and State Key Laboratory of Biotherapy, Sichuan University, Chengdu, 610064, China.
Department of Chemistry, Institute of Environmental Science Shanxi University, Taiyuan, 030006, China.
出版信息
Angew Chem Int Ed Engl. 2022 Jul 18;61(29):e202203541. doi: 10.1002/anie.202203541. Epub 2022 May 17.
Several γ-cyclodextrin (CD) derivatives mono- or di-substituted by pyrenes at the primary rim of the CD were demonstrated to aggregate into nano-strips in aqueous solutions, with the pyrene moieties interpenetrating into γ-CD cavities. The hydrophobic complexation-induced aggregation provides a rigid chiral environment for the pyrenes and leads to significant electronic circular dichroism (ECD) and circularly polarized luminescence (CPL) activities, giving unprecedently high g and g values up to 4.3×10 and 5.3×10 , respectively. The aggregates lead to excimer emission with high quantum yields and show B and B up to 338. 6 M cm and 169.3 M cm , respectively.
几种 γ-环糊精（CD）衍生物在 CD 的初级边缘被单或双取代的芘，在水溶液中聚集成长纳米带，其中芘部分相互贯穿γ-CD 腔。疏水的络合诱导聚集为芘提供了刚性的手性环境，并导致显著的电子圆二色性（ECD）和圆偏振发光（CPL）活性，分别高达 4.3×10 和 5.3×10 。这些聚集体导致具有高量子产率的激基发射，并分别显示高达 338.6 M cm 和 169.3 M cm 的 B 和 B 值。
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