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Ding Q, Yang W, Xing X, Lin H, Xu C, Xu L, Li S. Modulation by Co (II) Ion of Optical Activities of L/D-glutathione (GSH)-modified Chiral Copper Nanoclusters for Sensitive Adenosine Triphosphate Detection. Angew Chem Int Ed Engl 2024; 63:e202401032. [PMID: 38438340 DOI: 10.1002/anie.202401032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Revised: 03/03/2024] [Accepted: 03/03/2024] [Indexed: 03/06/2024]
Abstract
Chiral nanoscale enantiomers exhibit different biological effects in living systems. However, their chirality effect on the detection sensitivity for chiral biological targets still needs to be explored. Here, we discovered that Co2+ can modulate the luminescence performance of L/D-glutathione (GSH)-modified copper nanoclusters (L/D-Cu NCs) and induce strong chiroptical activities as the asymmetric factor was enhanced 223-fold with their distribution regulating from the ultraviolet to visible region. One Co2+ coordinated with two GSH molecules that modified on the surface of Cu NCs in the way of CoN2O2. On this basis, dual-modal chiral and luminescent signals of Co2+ coordinated L/D-Cu NCs (L/D-Co-Cu NCs) were used to detect the chiral adenosine triphosphate (ATP) based on the competitive interaction between surficial GSH and ATP molecules with Co2+. The limits of detection of ATP obtained with fluorescence and circular dichroism intensity were 9.15 μM and 15.75 nM for L-Co-Cu NCs, and 5.35 μM and 4.69 nM for D-Co-Cu NCs. This demonstrated that selecting suitable chiral configurations of nanoprobes effectively enhances detection sensitivity. This study presents not only a novel method to modulate and enhance the chiroptical activity of nanomaterials but also a unique perspective of chirality effects on the detection performances for bio-targets.
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Affiliation(s)
- Qi Ding
- International Joint Research Center for Photo-responsive Molecules and Materials, Jiangnan University, 214122, Wuxi, Jiangsu, P. R. China
- International Joint Research Laboratory for Biointerface and Biodetection, State Key Laboratory of Food Science and Technology, Jiangnan University, 214122, Wuxi, Jiangsu, P. R. China
| | - Weimin Yang
- International Joint Research Center for Photo-responsive Molecules and Materials, Jiangnan University, 214122, Wuxi, Jiangsu, P. R. China
| | - Xinhe Xing
- International Joint Research Center for Photo-responsive Molecules and Materials, Jiangnan University, 214122, Wuxi, Jiangsu, P. R. China
| | - Hengwei Lin
- International Joint Research Center for Photo-responsive Molecules and Materials, Jiangnan University, 214122, Wuxi, Jiangsu, P. R. China
| | - Chuanlai Xu
- International Joint Research Laboratory for Biointerface and Biodetection, State Key Laboratory of Food Science and Technology, Jiangnan University, 214122, Wuxi, Jiangsu, P. R. China
| | - Liguang Xu
- International Joint Research Laboratory for Biointerface and Biodetection, State Key Laboratory of Food Science and Technology, Jiangnan University, 214122, Wuxi, Jiangsu, P. R. China
| | - Si Li
- International Joint Research Center for Photo-responsive Molecules and Materials, Jiangnan University, 214122, Wuxi, Jiangsu, P. R. China
- International Joint Research Laboratory for Biointerface and Biodetection, State Key Laboratory of Food Science and Technology, Jiangnan University, 214122, Wuxi, Jiangsu, P. R. China
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