Chen Shu-Mei, Chang Li-Mei, Yang Xue-Kang, Luo Ting, Xu Hai, Gu Zhi-Gang, Zhang Jian
College of Chemistry , Fuzhou University , Fuzhou , Fujian 350108 , P. R. China.
State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter , Chinese Academy of Sciences , 350002 Fuzhou , P. R. China.
ACS Appl Mater Interfaces. 2019 Aug 28;11(34):31421-31426. doi: 10.1021/acsami.9b11872. Epub 2019 Aug 19.
Development of chiral metal-organic frameworks (MOFs) for circularly polarized luminescence (CPL) is a challenging but important task. In this work, we report a first example of azapyrene-based chiral MOF thin films [ZnCamDAP] grown on functionalized substrates (named SURchirMOF-4) for CPL property. By using a liquid-phase epitaxial layer-by-layer method, the resulted SURchirMOF-4 was constructed from chiral camphoric acid and 2,7-diazapyrene ligand, which has high orientation and homogeneity. The circular dichroism, CPL, and enantioselective adsorption results show that SURchirMOF-4 has strong chirality and CPL property as well as good enantioselective adsorption toward enantiomers of methyl-lactate. The synthesis of azapyrene-based chiral MOF thin films not only represents an ideal model for studying the enantioselective adsorption, but also will be a valuable approach for development of the chiral thin film exhibiting CPL property.
开发用于圆偏振发光（CPL）的手性金属有机框架（MOF）是一项具有挑战性但很重要的任务。在这项工作中，我们报道了首个基于氮杂芘的手性MOF薄膜[ZnCamDAP]在功能化衬底上生长（命名为SURchirMOF-4）并具有CPL性质的实例。通过使用液相外延逐层法，所得的SURchirMOF-4由手性樟脑酸和2,7-二氮杂芘配体构建而成，具有高取向性和均匀性。圆二色性、CPL和对映选择性吸附结果表明，SURchirMOF-4具有强手性和CPL性质，以及对乳酸甲酯对映体良好的对映选择性吸附。基于氮杂芘的手性MOF薄膜的合成不仅代表了研究对映选择性吸附的理想模型，也将是开发具有CPL性质的手性薄膜的一种有价值的方法。
