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Li H, Wang T, Han J, Xu Y, Kang X, Li X, Zhu M. Fluorescence resonance energy transfer in atomically precise metal nanoclusters by cocrystallization-induced spatial confinement. Nat Commun 2024; 15:5351. [PMID: 38914548 PMCID: PMC11196639 DOI: 10.1038/s41467-024-49735-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2023] [Accepted: 06/17/2024] [Indexed: 06/26/2024] Open
Abstract
Understanding the fluorescence resonance energy transfer (FRET) of metal nanoparticles at the atomic level has long been a challenge due to the lack of accurate systems with definite distance and orientation of molecules. Here we present the realization of achieving FRET between two atomically precise copper nanoclusters through cocrystallization-induced spatial confinement. In this study, we demonstrate the establishment of FRET in a cocrystallized Cu8(p-MBT)8(PPh3)4@Cu10(p-MBT)10(PPh3)4 system by exploiting the overlapping spectra between the excitation of the Cu10(p-MBT)10(PPh3)4 cluster and the emission of the Cu8(p-MBT)8(PPh3)4 cluster, combined with accurate control over the confined space between the two nanoclusters. Density functional theory is employed to provide deeper insights into the role of the distance and dipole orientations of molecules to illustrate the FRET procedure between two cluster molecules at the electronic structure level.
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Affiliation(s)
- Hao Li
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Anhui University, 230601, Hefei, China
- Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, 230601, Hefei, China
- Key Laboratory of Functional Inorganic Material Chemistry of Anhui Province, Anhui University, 230601, Hefei, China
- School of Materials and Chemical Engineering, Anhui Jianzhu University, 230601, Hefei, China
| | - Tian Wang
- Department of Chemistry, University of Washington, Seattle, WA, 98195-1653, USA
| | - Jiaojiao Han
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Anhui University, 230601, Hefei, China
- Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, 230601, Hefei, China
- Key Laboratory of Functional Inorganic Material Chemistry of Anhui Province, Anhui University, 230601, Hefei, China
| | - Ying Xu
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Anhui University, 230601, Hefei, China
- Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, 230601, Hefei, China
- Key Laboratory of Functional Inorganic Material Chemistry of Anhui Province, Anhui University, 230601, Hefei, China
| | - Xi Kang
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Anhui University, 230601, Hefei, China.
- Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, 230601, Hefei, China.
- Key Laboratory of Functional Inorganic Material Chemistry of Anhui Province, Anhui University, 230601, Hefei, China.
| | - Xiaosong Li
- Department of Chemistry, University of Washington, Seattle, WA, 98195-1653, USA.
| | - Manzhou Zhu
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Anhui University, 230601, Hefei, China.
- Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, 230601, Hefei, China.
- Key Laboratory of Functional Inorganic Material Chemistry of Anhui Province, Anhui University, 230601, Hefei, China.
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Jiang H, Li L, Li Z, Chu X. Metal-based nanoparticles in antibacterial application in biomedical field: Current development and potential mechanisms. Biomed Microdevices 2024; 26:12. [PMID: 38261085 PMCID: PMC10806003 DOI: 10.1007/s10544-023-00686-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/27/2023] [Indexed: 01/24/2024]
Abstract
The rise in drug resistance in pathogenic bacteria greatly endangers public health in the post-antibiotic era, and drug-resistant bacteria currently pose a great challenge not only to the community but also to clinical procedures, including surgery, stent implantation, organ transplantation, and other medical procedures involving any open wound and compromised human immunity. Biofilm-associated drug failure, as well as rapid resistance to last-resort antibiotics, necessitates the search for novel treatments against bacterial infection. In recent years, the flourishing development of nanotechnology has provided new insights for exploiting promising alternative therapeutics for drug-resistant bacteria. Metallic agents have been applied in antibacterial usage for several centuries, and the functional modification of metal-based biomaterials using nanotechnology has now attracted great interest in the antibacterial field, not only for their intrinsic antibacterial nature but also for their ready on-demand functionalization and enhanced interaction with bacteria, rendering them with good potential in further translation. However, the possible toxicity of MNPs to the host cells and tissue still hinders its application, and current knowledge on their interaction with cellular pathways is not enough. This review will focus on recent advances in developing metallic nanoparticles (MNPs), including silver, gold, copper, and other metallic nanoparticles, for antibacterial applications, and their potential mechanisms of interaction with pathogenic bacteria as well as hosts.
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Affiliation(s)
- Hao Jiang
- Sichuan Provincial Laboratory of Orthopaedic Engineering, Department of Orthopaedics, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, Sichuan, China
| | - Lingzhi Li
- Sichuan Provincial Laboratory of Orthopaedic Engineering, Department of Orthopaedics, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, Sichuan, China
| | - Zhong Li
- Sichuan Provincial Laboratory of Orthopaedic Engineering, Department of Orthopaedics, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, Sichuan, China.
| | - Xiang Chu
- State Key Laboratory of Trauma, Burn and Combined Injury, Department of Emergency, Daping Hospital, Army Medical University, Chongqing, 400042, China
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Sharma S, Das S, Kaushik K, Yadav A, Patra A, Nandi CK. Unveiling the Long-Lived Emission of Copper Nanoclusters Embedded in a Protein Scaffold. J Phys Chem Lett 2023; 14:8979-8987. [PMID: 37773588 DOI: 10.1021/acs.jpclett.3c01877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/01/2023]
Abstract
Protein-conjugated coinage metal nanoclusters have become promising materials for optoelectronics and biomedical applications. However, the origin of the photoluminescence, especially the long-lived excited state emission in these metal nanoclusters, is still elusive. Here, we unveiled the underlying mechanism of long-lived emission in albumin protein-conjugated copper nanoclusters (Cu NCs) using steady state and time-resolved spectroscopic techniques. Our findings reveal room-temperature phosphorescence (RTP) in protein-conjugated Cu NCs. Time-resolved area-normalized spectra distinguished short- and long-lived components, where the former arises from the singlet state and the latter from the triplet state, thus resulting in RTP. The similarity of the emission spectra at room (298 K) and cryogenic (77 K) temperature ascertains the RTP phenomenon by harvesting the higher-lying triplet states. Time-gated bioimaging of A549 cells using the long-lived emission not only supports RTP emission in the cellular environment but also provides exciting avenues in long-term bioimaging using bovine serum albumin-conjugated Cu NCs.
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Affiliation(s)
- Shagun Sharma
- School of Chemical Sciences, Indian Institute of Technology (IIT), Mandi, HP 175075, India
- Advanced Materials Research Centre (AMRC), IIT, Mandi, HP 175075, India
| | - Subhadeep Das
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Bhopal, MP 462066, India
| | - Kush Kaushik
- School of Chemical Sciences, Indian Institute of Technology (IIT), Mandi, HP 175075, India
- Advanced Materials Research Centre (AMRC), IIT, Mandi, HP 175075, India
| | - Aditya Yadav
- School of Chemical Sciences, Indian Institute of Technology (IIT), Mandi, HP 175075, India
- Advanced Materials Research Centre (AMRC), IIT, Mandi, HP 175075, India
| | - Abhijit Patra
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Bhopal, MP 462066, India
| | - Chayan Kanti Nandi
- School of Chemical Sciences, Indian Institute of Technology (IIT), Mandi, HP 175075, India
- Advanced Materials Research Centre (AMRC), IIT, Mandi, HP 175075, India
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