材料科学
对映体
对映选择合成
堆积
电化学
富勒烯
金属有机骨架
微型多孔材料
纳米技术
化学物理
组合化学
电极
有机化学
物理化学
化学
吸附
催化作用
复合材料
作者
Xiaohui Niu,Yongqi Liu,Rui Zhao,Mengwei Yuan,Huabin Zhao,Hongxia Li,Kunjie Wang
标识
DOI:10.1021/acsami.4c03134
摘要
Chiral metal–organic frameworks (MOFs) have attracted much attention due to their highly tunable regular microporous structures. However, chiral electrochemical recognition based on chiral MOFs is often limited by poor charge separation and slow charge transfer kinetics. In this case, C60 can be encapsulated into the cavity of [La(BTB)]n by virtue of host–guest interactions through π–π stacking to synthesize the chiral composite C60@[La(BTB)]n and amplify electrochemically controlled enantioselective interactions with the target enantiomers. A large electrostatic potential difference is generated in chiral C60@[La(BTB)]n due to the host–guest interaction and the inhomogeneity of the charge distribution, leading to the generation of a strong built-in electric field and thus an overall enhancement of the conductivity of the chiral material. Their enantioselective detection of tryptophan enantiomers was demonstrated by electrochemical measurement. The results showed that chiral MOF materials can be used for enantiomeric recognition. It is worth noting that this new material derived from the concept of host–guest interaction to enhance charge separation opens up unprecedented possibilities for future enantioselective recognition and separation.
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