Nanomaterials with intrinsic enzymatic activity are often referred to as nanozymes. They exhibit many advantages over natural enzymes such as temporal and thermal stability, recyclability, controllable activity, and ease of large-scale preparation. Many efforts have been made in the past 5 years in order to improve their specificity for chiral substrates. This review (with 74 refs.) summarizes the state of the art in the design of nanozymes with chiral selectivity. Following an introduction into nanozymes and chiral selectivity in general, a first large section covers nanozymes based on the use of chiral chemicals. The next two sections describe nanozymes using amino acids and DNA as chiral ligands. A table summarizes the kinetic and selectivity parameters of the currently known chiral enzyme mimics. A concluding section addresses current challenges, and gives perspectives and an outlook on trends. Graphical abstract Chiral nanozymes exhibit the ability of asymmetric catalysis and enantioselective discrimination by modifying with chiral ligands.
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http://dx.doi.org/10.1007/s00604-019-3922-7 | DOI Listing |
Anal Chem
December 2024
Key Laboratory of Luminescence Analysis and Molecular Sensing (Ministry of Education), College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China.
Facile chiral discrimination without relying on chromatographic techniques has long been a huge challenge due to the minimal differences in the physicochemical properties of enantiomers. Polysaccharide hydrogels with natural chiral selectivity can be promising materials for constructing chiral discrimination platforms. In this study, l-cysteine-induced cobalt nanoclusters (LC-CoNCs) were prepared and utilized as chiral nanozymes for promoting the chemiluminescent (CL) signal of a luminol-HO system.
View Article and Find Full Text PDFChem Commun (Camb)
December 2024
School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, Jiangsu, P. R. China.
growth of MnO nanoparticles (NPs) onto chiral /-polyaniline (/-PANI) scaffolds efficiently regulates the supramolecular chirality, making them function as chiral nanozymes for controllable enantioselective catalysis. Compared with the loaded MnO NPs onto /-PANI scaffolds, the enantioselectivity of the growth system is significantly enhanced due to the stronger bonding between catalytic centers and supramolecular scaffolds.
View Article and Find Full Text PDFSpectrochim Acta A Mol Biomol Spectrosc
February 2025
Department of Chemisty, School of Science, Xihua University, Chengdu 610039, PR China; Asymmetric Synthesis and Chiral Technology Key Laboratory of Sichuan Province, Xihua University, Chengdu 610039, PR China. Electronic address:
Anal Chim Acta
September 2024
Department of Chemisty, School of Science, Xihua University, Chengdu, 610039, PR China; Asymmetric Synthesis and Chiral Technology Key Laboratory of Sichuan Province, Xihua University, Chengdu, 610039, PR China. Electronic address:
Single-atom nanozymes have garnered significant attention due to their exceptional atom utilization and ability to establish well-defined structure-activity relationships. However, conventional pyrolytic synthesis methods pose challenges such as high energy consumption and random local environments at the active sites, while achieving non-pyrolytic synthesis of single-atom nanozymes remains a formidable technical hurdle. The present study focuses on the synthesis of laccase-like iron-based single-atom nanozymes (Fe-SAzymes) using a non-pyrolysis method facilitated by microwave irradiation.
View Article and Find Full Text PDFSpectrochim Acta A Mol Biomol Spectrosc
December 2024
School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China. Electronic address:
Different enantiomer forms of amino acids play different roles in multifarious fields, and improper use will cause irreversible effects. Therefore, the identification of chiral amino acids is a vital issue in the field of pharmaceutical analysis. Herein, a chiral sensing system of β-cyclodextrin coated silver nanoparticle (β-CD@AgNPs) with peroxidase-like activity was designed for the fast and efficient colorimetric identification of tryptophan (Trp) enantiomers based on the difference in binding capacity between D/L-Trp and β-CD.
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