Chen Peng-Zhong, Chen Yu-Zhe, Tung Chen-Ho, Yang Qing-Zheng
Key Laboratory of Radiopharmaceuticals, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing, 100875, China.
Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
Chemphyschem. 2018 Sep 5;19(17):2131-2133. doi: 10.1002/cphc.201800212. Epub 2018 Jun 17.
It is urgent to develop a universal strategy for producing small organic molecules exhibiting efficient room temperature phosphorescence (RTP). An important contribution made by Ma and Tian et al. provides a general and applicable strategy to obtain amorphous organic molecules with efficient RTP emission by simply modifying phosphors onto β-cyclodextrin (β-CD). The nonradiative decay processes and oxygen quenching have been significantly suppressed by the strong intermolecular hydrogen bonding between β-CD derivatives. Furthermore, the cavity of β-CDs endows them with the ability to incorporate the adamantane moiety of the fluorescent guest molecules to construct a supramolecular system which exhibits excellent RTP-fluorescence dual emission properties and multicolor emission by altering the host to guest ratio and the excitation wavelength.
开发一种用于生产具有高效室温磷光（RTP）的小分子有机化合物的通用策略迫在眉睫。马和田等人做出的一项重要贡献提供了一种通用且适用的策略，通过简单地将磷光体修饰到β-环糊精（β-CD）上，来获得具有高效RTP发射的无定形有机分子。β-CD衍生物之间强大的分子间氢键显著抑制了非辐射衰变过程和氧猝灭。此外，β-环糊精的空腔使其能够纳入荧光客体分子的金刚烷部分，以构建一个超分子体系，该体系通过改变主体与客体的比例和激发波长，展现出优异的RTP-荧光双发射特性和多色发射。
