摘要
Carbon dots are luminescent carbonaceous nanoparticles that can be endowed with chiral properties,making them particularly interesting for biomedical applications due to their low cytotoxicity and facile synthesis.In recent years,synthetic efforts leading to chiral carbon dots with other attractive optical properties such as two-photon absorption and circularly polarized light emission have flourished.We start this review by introducing examples of molecular chirality and its origins and providing a summary of chiroptical spectroscopy used for its characterization.Then approaches used to induce chirality in nanomaterials are reviewed.In the main part of this review we focus on chiral carbon dots,introducing their fabrication techniques such as bottom-up and top-down chemical syntheses,their morphology,and optical/chiroptical properties.We then consider emerging applications of chiral carbon dots in sensing,bioimaging,and catalysis,and conclude this review with a summary and future challenges.
基金
the Research Grant Council of Hong Kong(CityU 11306619)
the Science Technology and Innovation Committee of Shenzhen Municipality(JCYJ20190808181201899)
E.V.U.thanks the Ministry of Science and Higher Education of the Russian Federation for financial support(Scholarship of the President of the Russian Federation for young scientists and graduate students,Cn-2180.2021.1).
作者简介
Correspondence:Andrey L.Rogach(andrey.rogach@cityu.edu.hk)。
