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Tan Y, Li K, Xu J, Li Q, Yang S, Chai J, Pei Y, Jia D, Zhu M. A single-gold-atom addition regulates sharp redshift in the fluorescence of atomically precise nanoclusters. NANOSCALE 2024; 16:15663-15669. [PMID: 39058368 DOI: 10.1039/d4nr01963f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/28/2024]
Abstract
The manipulation of emission peaks at the atomic level and the investigation of the fluorescent origin mechanism are important issues. In this study, a phosphine-mediated modification method was employed on Au36(TBBT)24 nanocluster to produce a new gold nanocluster Au37(TBBT)21(TPP)2. The structural comparison revealed that Au37(TBBT)21(TPP)2 has a structural framework similar to that of Au36(TBBT)24 except for the reconstruction of its surface motifs, the addition of one gold atom into the kernel, and local structural distortion. Interestingly, compared with Au36(TBBT)24, the emission peak of Au37(TBBT)21(TPP)2 is red-shifted into the NIR-II windows (972 nm vs. 1152 nm in CDCl3) with a quantum yield of 1.5%. Furthermore, the origin of the NIR-II fluorescence in Au37(TBBT)21(TPP)2 and the red-shift mechanism of the emission peak were explored by combining the crystal structure and DFT calculations. The results reveal that the insertion of the 37th gold atom into the core can increase the contribution of the gold atoms to the HOMO orbitals and change the origin of their fluorescence from local excitation (LE) to inter fragment charge transfer (IFCT).
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Affiliation(s)
- Yesen Tan
- Key Laboratory of Energy Materials Chemistry, Ministry of Education, Key Laboratory of Advanced Functional Materials, Autonomous Region, Institute of Applied Chemistry, Xinjiang University, Urumqi, Xinjiang 830046, China.
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Institutes of Physical Science and Information Technology and Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei, Anhui 230601, China.
| | - Kang Li
- Department of Chemistry, Key Laboratory of Environmentally Friendly Chemistry and Applications of MOE, Xiangtan University, Xiangtan, Hunan 411105, China.
| | - Jingjing Xu
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Institutes of Physical Science and Information Technology and Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei, Anhui 230601, China.
| | - Qinzhen Li
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Institutes of Physical Science and Information Technology and Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei, Anhui 230601, China.
| | - Sha Yang
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Institutes of Physical Science and Information Technology and Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei, Anhui 230601, China.
| | - Jinsong Chai
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Institutes of Physical Science and Information Technology and Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei, Anhui 230601, China.
| | - Yong Pei
- Department of Chemistry, Key Laboratory of Environmentally Friendly Chemistry and Applications of MOE, Xiangtan University, Xiangtan, Hunan 411105, China.
| | - Dianzeng Jia
- Key Laboratory of Energy Materials Chemistry, Ministry of Education, Key Laboratory of Advanced Functional Materials, Autonomous Region, Institute of Applied Chemistry, Xinjiang University, Urumqi, Xinjiang 830046, China.
| | - Manzhou Zhu
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Institutes of Physical Science and Information Technology and Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei, Anhui 230601, China.
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2
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Wan XK, Han XS, Guan ZJ, Shi WQ, Li JJ, Wang QM. Interplay of kernel shape and surface structure for NIR luminescence in atomically precise gold nanorods. Nat Commun 2024; 15:7214. [PMID: 39174541 PMCID: PMC11341786 DOI: 10.1038/s41467-024-51642-w] [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: 03/28/2024] [Accepted: 08/14/2024] [Indexed: 08/24/2024] Open
Abstract
It is challenging to attain strong near-infrared (NIR) emissive gold nanoclusters. Here we show a rod-shaped cluster with the composition of [Au28(p-MBT)14(Hdppa)3](SO3CF3)2 (1 for short, Hdppa is N,N-bis(diphenylphosphino)amine, p-MBT is 4-methylbenzenethiolate) has been synthesized. Single crystal X-ray structural analysis reveals that it has a rod-like face-centered cubic (fcc) Au22 kernel built from two interpenetrating bicapped cuboctahedral Au15 units. 1 features NIR luminescence with an emission maximum at 920 nm, and the photoluminescence quantum yield (PLQY) is 12%, which is 30-fold of [Au21(m-MBT)12(Hdppa)2]SO3CF3 (2, m-MBT is 3-methylbenzenethiolate) with a similar composition and 60-fold of Au30S(S‑t‑Bu)18 with a similar structure. time-dependent DFT(TDDFT)calculations reveal that the luminescence of 1 is associated with the Au22 kernel. The small Stokes shift of 1 indicates that it has a very small excited state structural distortion, leading to high radiative decay rate (kr) probability. The emission of cluster 1 is a mixture of phosphorescence and thermally activated delayed fluorescence(TADF), and the enhancement of the NIR emission is mainly due to the promotion of kr rather than the inhibition of knr. This work demonstrates that the metal kernel and the surface structure are both very important for cluster-based NIR luminescence materials.
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Affiliation(s)
- Xian-Kai Wan
- Department of Chemistry, Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of Education, Tsinghua University, Beijing, PR China
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan, PR China
| | - Xu-Shuang Han
- Department of Chemistry, Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of Education, Tsinghua University, Beijing, PR China
| | - Zong-Jie Guan
- Department of Chemistry, Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of Education, Tsinghua University, Beijing, PR China
| | - Wan-Qi Shi
- Department of Chemistry, Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of Education, Tsinghua University, Beijing, PR China
| | - Jiao-Jiao Li
- Department of Chemistry, Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of Education, Tsinghua University, Beijing, PR China
| | - Quan-Ming Wang
- Department of Chemistry, Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of Education, Tsinghua University, Beijing, PR China.
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Zhu C, Chen ZL, Li H, Lu L, Kang X, Xuan J, Zhu M. Rational Design of Highly Phosphorescent Nanoclusters for Efficient Photocatalytic Oxidation. J Am Chem Soc 2024; 146:23212-23220. [PMID: 39084600 DOI: 10.1021/jacs.4c05530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/02/2024]
Abstract
Analyzing the molecular structure-photophysical property correlations of metal nanoclusters to accomplish function-oriented photocatalysis could be challenging. Here, the selective heteroatom alloying has been exploited to a Au15 nanocluster, making up a structure-correlated nanocluster series, including homogold Au15, bimetallic AgxAu15-x and CuxAu15-x, trimetallic AgxCuyAu15-x-y, and tetrametallic Pt1AgxCuyAu15-x-y. Their structure-dependent photophysical properties were investigated due to the atomically precise structures of these nanoclusters. Cu-alloyed CuxAu15-x showed intense phosphorescence and the highest singlet oxygen production efficiency. Moreover, the generation of 1O2 species from excited nanoclusters enabled CuxAu15-x as a suitable catalyst for efficient photocatalytic oxidation of silyl enol ethers to produce α,β-unsaturated carbonyl compounds. The generality and applicability of the CuxAu15-x catalysts toward different photocatalytic oxidations were assessed. Overall, this study presents an intriguing Au15-based cluster series enabling an atomic-level understanding of structure-photophysical property correlations, which hopefully provides guidance for the fabrication of cluster-based catalysts with customized photocatalytic performance.
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Affiliation(s)
- Chen Zhu
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei, Anhui 230601, China
| | - Ze-Le Chen
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei, Anhui 230601, China
| | - Hao Li
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei, Anhui 230601, China
| | - Luyao Lu
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei, Anhui 230601, China
| | - Xi Kang
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei, Anhui 230601, China
| | - Jun Xuan
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei, Anhui 230601, China
| | - Manzhou Zhu
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei, Anhui 230601, China
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Mazumder A, Li K, Liu Z, Wang Y, Pei Y, Peteanu LA, Jin R. Isomeric Effects of Au 28(S- c-C 6H 11) 20 Nanoclusters on Photoluminescence: Roles of Electron-Vibration Coupling and Higher Triplet State. ACS NANO 2024; 18:21534-21543. [PMID: 39092525 PMCID: PMC11328167 DOI: 10.1021/acsnano.4c06702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/04/2024]
Abstract
The exploration of near-infrared photoluminescence (PL) from atomically precise nanoclusters is currently a prominent area of interest owing to its importance in both fundamental research and diverse applications. In this work, we investigate the near-infrared (NIR) photoluminescence mechanisms of two structural isomers of atomically precise gold nanoclusters of 28 atoms protected by cyclohexanethiolate (CHT) ligands, i.e., Au28i(CHT)20 and Au28ii(CHT)20. Based on their structures, analysis of 3O2 (triplet oxygen) quenching of the nanocluster triplet states, temperature-dependent photophysical studies, and theoretical calculations, we have elucidated the intricate processes governing the photoluminescence of these isomeric nanoclusters. For Au28i(CHT)20, its emission characteristics are identified as phosphorescence plus thermally activated delayed fluorescence (TADF) with a PL quantum yield (PLQY) of 0.3% in dichloromethane under ambient conditions. In contrast, the Au28ii(CHT)20 isomer exhibits exclusive phosphorescence with a PLQY of 3.7% in dichloromethane under ambient conditions. Theoretical simulations reveal a larger singlet (S1)-triplet (T1) gap in Au28ii than that in Au28i, and the higher T2 state plays a critical role in both isomers' photophysical processes. The insights derived from this investigation not only contribute to a more profound comprehension of the fundamental principles underlying the photoluminescence of atomically precise gold nanoclusters but also provide avenues for tailoring their optical properties for diverse applications.
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Affiliation(s)
- Abhrojyoti Mazumder
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - Kang Li
- Department of Chemistry, Key Laboratory of Environmentally Friendly Chemistry and Applications of MOE, Xiangtan University, Xiangtan, Hunan 411105, China
| | - Zhongyu Liu
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - Yitong Wang
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - Yong Pei
- Department of Chemistry, Key Laboratory of Environmentally Friendly Chemistry and Applications of MOE, Xiangtan University, Xiangtan, Hunan 411105, China
| | - Linda A Peteanu
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - Rongchao Jin
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
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5
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Borah B, Sharma R, Sharma PK, Barman AK. Novel 2-mercaptobenzothiazole and 2-mercaptobenzimidazole-derived Ag 16 and Ag 18 nanoclusters: synthesis and optical properties. NANOSCALE 2024; 16:14844-14852. [PMID: 39034676 DOI: 10.1039/d4nr01606h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/23/2024]
Abstract
Silver and gold nanoclusters are promising nanomaterials for various applications such as sensing, catalysis, and bioimaging. However, their synthetic control and repeatability, and determination of their structures are highly complicated. Only a handful of crystal structures of silver nanoclusters (AgNCs) have been reported, while structures of a few others have been reported with the help of mass spectrometry. We synthesized two AgNCs, viz., Ag-MBTNC (Ag16 cluster) and Ag-MBINC (Ag18 cluster) respectively stabilized by 2-mercaptobenzothiazole (2-MBT) and 2-mercaptobenzimidazole (2-MBI) with excellent repeatability; determined their composition and plausible structures using XPS, TGA and MALDI-TOF mass spectrometry; and compared their optical properties. Interestingly, Ag-MBTNC is fluorescent while Ag-MBINC is not, although these are synthesized using stabilizing ligands that have difference in only one atom. The structural features of the clusters are found to be similar but they have contrasting optical behaviours due to the effect of one S atom (in 2-MBT) in place of one N atom (in 2-MBI).
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Affiliation(s)
- Bedanta Borah
- Department of Chemistry, Cotton University, Panbazar, Guwahati, Assam, 781001, India.
| | - Rohan Sharma
- Department of Chemistry, Cotton University, Panbazar, Guwahati, Assam, 781001, India.
| | - Pankaz K Sharma
- Department of Chemistry, Cotton University, Panbazar, Guwahati, Assam, 781001, India.
| | - Apurba Kr Barman
- Department of Chemistry, Cotton University, Panbazar, Guwahati, Assam, 781001, India.
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6
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Zhao YJ, Yang JS, Li J, Si YB, Xiao LY, Wang ZY, Hu JH, Dong XY, Zang SQ. Influence of the substituents of the thiol ligand on the optical properties of AuCu 14. Chem Commun (Camb) 2024; 60:7374-7377. [PMID: 38922126 DOI: 10.1039/d4cc01747a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/27/2024]
Abstract
Detailed photophysical processes of two AuCu14 clusters with different substituents (-F or -C(CH3)3) of the thiol ligand were studied in this work. The electronic effect of the substituents led to structural shrinkage, thus enhancing the luminous intensity. The internal conversion (IC) and intersystem crossing (ISC) rates in the AuCu14-C(CH3)3 crystal were slower compared with the AuCu14-F crystal, which was caused by the steric effect.
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Affiliation(s)
- Yu-Jing Zhao
- Laboratory of Crystalline Molecular Functional Materials, Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou 450001, China.
| | - Jin-Sen Yang
- Laboratory of Crystalline Molecular Functional Materials, Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou 450001, China.
- College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454000, China
| | - Jing Li
- School of Science, Xuchang University, 461000, Xuchang, China
| | - Yu-Bing Si
- Laboratory of Crystalline Molecular Functional Materials, Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou 450001, China.
| | - Lu-Yao Xiao
- Laboratory of Crystalline Molecular Functional Materials, Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou 450001, China.
| | - Zhao-Yang Wang
- Laboratory of Crystalline Molecular Functional Materials, Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou 450001, China.
| | - Jia-Hua Hu
- Laboratory of Crystalline Molecular Functional Materials, Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou 450001, China.
| | - Xi-Yan Dong
- Laboratory of Crystalline Molecular Functional Materials, Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou 450001, China.
- College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454000, China
| | - Shuang-Quan Zang
- Laboratory of Crystalline Molecular Functional Materials, Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou 450001, China.
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Zheng H, Zhou Y, Yan B, Zhou G, Cheng X, Lin S, Duan M, Li J, Wang L, Fan C, Chen J, Shen J. DNA Framework-Guided Self-Limiting Aggregation for Highly Luminescent Metal Cluster Nanoaggregates. J Am Chem Soc 2024; 146:17094-17102. [PMID: 38867462 DOI: 10.1021/jacs.4c02401] [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: 06/14/2024]
Abstract
The photoluminescent properties of atomically precise metal nanoclusters (MCs) have garnered significant attention in the fields of chemical sensing and biological imaging. However, the limited brightness of single-component nanoclusters hinders their practical applications, and the conventional ligand engineering approaches have proven insufficient in enhancing the emission efficiency of MCs. Here, we present a DNA framework-guided strategy to prepare highly luminescent metal cluster nanoaggregates. Our approach involves an amphiphilic DNA framework comprising a hydrophobic alkyl core and a rigid DNA framework shell, serving as a nucleation site and providing well-defined nanoconfinements for the self-limiting aggregation of MCs. Through this method, we successfully produced homogeneous MC nanoaggregates (10.1 ± 1.2 nm) with remarkable nanoscale precision. Notably, this strategy proves adaptable to various MCs, leading to a substantial enhancement in emission and quantum yield, up to 3011- and 87-fold, respectively. Furthermore, our investigation using total internal reflection fluorescence microscopy at the single-particle level uncovered a more uniform photon number distribution and higher photostability for MC nanoaggregates compared to template-free counterparts. This DNA-templating strategy introduces a conceptually innovative approach for studying the photoluminescent properties of aggregates with nanoscale precision and holds promise for constructing highly luminescent MC nanoparticles for diverse applications.
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Affiliation(s)
- Haoran Zheng
- School of Chemistry and Chemical Engineering, New Cornerstone Science Laboratory, Frontiers Science Center for Transformative Molecules and National Center for Translational Medicine, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yan Zhou
- School of Chemistry and Chemical Engineering, New Cornerstone Science Laboratory, Frontiers Science Center for Transformative Molecules and National Center for Translational Medicine, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Bingjie Yan
- School of Chemistry and Chemical Engineering, New Cornerstone Science Laboratory, Frontiers Science Center for Transformative Molecules and National Center for Translational Medicine, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Gaoang Zhou
- School of Chemistry and Chemical Engineering, New Cornerstone Science Laboratory, Frontiers Science Center for Transformative Molecules and National Center for Translational Medicine, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Xinyi Cheng
- School of Chemistry and Chemical Engineering, New Cornerstone Science Laboratory, Frontiers Science Center for Transformative Molecules and National Center for Translational Medicine, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Sicheng Lin
- School of Chemistry and Chemical Engineering, New Cornerstone Science Laboratory, Frontiers Science Center for Transformative Molecules and National Center for Translational Medicine, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Mulin Duan
- School of Chemistry and Chemical Engineering, New Cornerstone Science Laboratory, Frontiers Science Center for Transformative Molecules and National Center for Translational Medicine, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Jiang Li
- Institute of Materiobiology, Department of Chemistry, College of Sciences, Shanghai University, Shanghai 200444, China
| | - Lihua Wang
- Institute of Materiobiology, Department of Chemistry, College of Sciences, Shanghai University, Shanghai 200444, China
| | - Chunhai Fan
- School of Chemistry and Chemical Engineering, New Cornerstone Science Laboratory, Frontiers Science Center for Transformative Molecules and National Center for Translational Medicine, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Jing Chen
- Institute of Materiobiology, Department of Chemistry, College of Sciences, Shanghai University, Shanghai 200444, China
| | - Jianlei Shen
- School of Chemistry and Chemical Engineering, New Cornerstone Science Laboratory, Frontiers Science Center for Transformative Molecules and National Center for Translational Medicine, Shanghai Jiao Tong University, Shanghai 200240, China
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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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Zhong Y, Wang X, Li T, Yao Q, Dong W, Lu M, Bai X, Wu Z, Xie J, Zhang Y. White-Emitting Gold Nanocluster Assembly with Dynamic Color Tuning. NANO LETTERS 2024; 24:6997-7003. [PMID: 38721805 DOI: 10.1021/acs.nanolett.4c01377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2024]
Abstract
We report that constructed Au nanoclusters (NCs) can afford amazing white emission synergistically dictated by the Au(0)-dominated core-state fluorescence and Au(I)-governed surface-state phosphorescence, with record-high absolute quantum yields of 42.1% and 53.6% in the aqueous solution and powder state, respectively. Moreover, the dynamic color tuning is achieved in a wide warm-to-cold white-light range (with the correlated color temperature varied from 3426 to 24 973 K) by elaborately manipulating the ratio of Au(0) to Au(I) species and thus the electron transfer rate from staple motif to metal kernel. This study not only exemplifies the successful integration of multiple luminescent centers into metal NCs to accomplish efficient white-light emission but also inspires a feasible pathway toward customizing the optical properties of metal NCs by regulating electron transfer kinetics.
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Affiliation(s)
- Yuan Zhong
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, China
| | - Xue Wang
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, China
| | - Tingting Li
- College of Materials Science and Engineering, Jilin Jianzhu University, Changchun 130012, China
| | - Qiaofeng Yao
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Key Laboratory of Organic Integrated Circuits, Ministry of Education, Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China
| | - Weinan Dong
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, China
| | - Min Lu
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, China
| | - Xue Bai
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, China
| | - Zhennan Wu
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, China
| | - Jianping Xie
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore 117585
| | - Yu Zhang
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, China
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Fang JJ, Liu Z, Wang ZY, Xie YP, Lu X. Chiral Canoe-Like Pd 0 or Pt 0 Alloyed Copper Alkynyl Nanoclusters Display Near-Infrared Luminescence. Angew Chem Int Ed Engl 2024; 63:e202401206. [PMID: 38469979 DOI: 10.1002/anie.202401206] [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: 01/17/2024] [Revised: 02/23/2024] [Accepted: 03/11/2024] [Indexed: 03/13/2024]
Abstract
Alloying nanoclusters (NCs) has emerged as a widely explored and versatile strategy for tailoring tunable properties, facilitating in-depth atomic-level investigations of structure-property correlations. In this study, we have successfully synthesized six atomically precise copper NCs alloyed with Group 10 metals (Pd or Pt). Notably, the Pd0 or Pt0 atom situated at the center of the distorted hexagonal antiprism Pd0/Pt0@Cu12 cage, coordinated with twelve Cu+ and two tBuC≡C- ligands. Moreover, ligand exchange strategies demonstrated the potential for Cl- and Br- to replace one or two alkynyl ligands positioned at the top or side of the NCs. The chirality exhibited by these racemic NCs is primarily attributed to the involvement of halogens and a chiral (Pd/Pt)@Cu18 skeleton. Furthermore, all the NCs exhibit near-infrared (NIR) luminescence, characterized by emission peaks at 705-755 nm, lifetimes ranging from 6.630 to 9.662 μs, and absolute photoluminescence quantum yields (PLQYs) of 1.75 %-2.52 % in their crystalline state. The experimental optical properties of these NCs are found to be in excellent agreement with the results of theoretical calculations. These alloy NCs not only offer valuable insights into the synthesis of Pd0/Pt0-Cu alloy NCs, but also bridge the gap in understanding the structure-luminescence relationships of Pd0/Pt0-Cu molecules.
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Affiliation(s)
- Jun-Jie Fang
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Zheng Liu
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Zhi-Yi Wang
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Yun-Peng Xie
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Xing Lu
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
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11
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Schmitt C, Da Roit N, Neumaier M, Maliakkal CB, Wang D, Henrich T, Kübel C, Kappes M, Behrens S. Continuous flow synthesis of atom-precise platinum clusters. NANOSCALE ADVANCES 2024; 6:2459-2468. [PMID: 38694455 PMCID: PMC11059489 DOI: 10.1039/d4na00074a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Accepted: 02/22/2024] [Indexed: 05/04/2024]
Abstract
Subnanometer clusters with precise atom numbers hold immense potential for applications in catalysis, as single atoms can significantly impact catalytic properties. Typically, inorganic clusters are produced using batch processes with high dilutions, making the scale-up of these processes time-consuming and its reproducibility challenging. While continuous-flow systems have been employed for organic synthesis and, more recently, nanoparticle preparation, these approaches have only rarely been applied to cluster synthesis. In a flexible, continuous flow synthesis platform, we integrate multiple continuous stirred tank reactors (CSTR) into a cascade to synthesize clusters with a precise number of atoms, demonstrating the potential of this approach for atom precise cluster synthesis and expanding the application of continuous-flow systems beyond organic synthesis.
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Affiliation(s)
- Christian Schmitt
- Institute of Catalysis Research and Technology, Karlsruhe Institute of Technology Hermann-von Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Nicola Da Roit
- Institute of Catalysis Research and Technology, Karlsruhe Institute of Technology Hermann-von Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Marco Neumaier
- Institute of Nanotechnology, Karlsruhe Institute of Technology Hermann-von Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Carina B Maliakkal
- Institute of Nanotechnology, Karlsruhe Institute of Technology Hermann-von Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Di Wang
- Institute of Nanotechnology, Karlsruhe Institute of Technology Hermann-von Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
- Karlsruhe Nano Micro Facility (KNMFi), Karlsruhe Institute of Technology (KIT) Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Thilo Henrich
- Institute of Catalysis Research and Technology, Karlsruhe Institute of Technology Hermann-von Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Christian Kübel
- Institute of Nanotechnology, Karlsruhe Institute of Technology Hermann-von Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
- Karlsruhe Nano Micro Facility (KNMFi), Karlsruhe Institute of Technology (KIT) Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Manfred Kappes
- Institute of Nanotechnology, Karlsruhe Institute of Technology Hermann-von Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Silke Behrens
- Institute of Catalysis Research and Technology, Karlsruhe Institute of Technology Hermann-von Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
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12
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Wang J, Ma A, Ren Y, Shen X, Wang Y, Song C, Wang S. An Au 5Ag 12(SR) 9(dppf) 4 alloy nanocluster: structural determination and optical property and photothermal conversion investigation. NANOSCALE 2024. [PMID: 38634772 DOI: 10.1039/d4nr00312h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/19/2024]
Abstract
Photothermal conversion has garnered significant attention due to its potential for efficient energy conversion and application in targeted therapies. However, controlling photothermal properties at the atomic level remains a challenge in current materials synthesis. In this study, we report the synthesis and structural determination of a phosphine and mercaptan co-protected Au5Ag12(SR)9(dppf)4 (Au5Ag12) nanocluster with an extremely low quantum yield (∼0%). For comparative purposes, we synthesized three alloy nanoclusters of similar size. Notably, Au5Ag12 demonstrates a remarkably superior photothermal conversion performance, significantly outperforming the other clusters. We investigated this variance from both absorption and emission perspectives. This research not only opens new avenues for the application of clusters with extremely low quantum yields, but also provides experimental evidence for understanding the photothermal conversion properties of cluster materials at the atomic level.
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Affiliation(s)
- Jiawei Wang
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China.
| | - Along Ma
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China.
- Shandong Key Laboratory of Biochemical Analysis, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
| | - Yonggang Ren
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China.
| | - Xuekairui Shen
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China.
| | - Yifei Wang
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China.
| | - Caixia Song
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China.
| | - Shuxin Wang
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China.
- Shandong Key Laboratory of Biochemical Analysis, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
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13
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Liu Z, Luo L, Kong J, Kahng E, Zhou M, Jin R. Bright near-infrared emission from the Au 39(SR) 29 nanocluster. NANOSCALE 2024; 16:7419-7426. [PMID: 38529816 DOI: 10.1039/d4nr00677a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/27/2024]
Abstract
The synthesis of atomically precise gold nanoclusters with high photoluminescence quantum yield (PLQY) in the near-infrared (NIR) region and understanding their photoluminescence mechanism are crucial for both fundamental science and practical applications. Herein, we report a highly luminescent, molecularly pure Au39(PET)29 (PET = 2-phenylethanethiolate) nanocluster with PLQY of 19% in the NIR range (915 nm). Steady state and time-resolved PL analyses, as well as temperature-dependent PL measurements reveal the emission nature of Au39(PET)29, which consists of prompt fluorescence (weak), thermally activated delayed fluorescence (TADF), and phosphorescence (predominant). Furthermore, strong dipole-dipole interaction in the solid-state (e.g., Au39(PET)29 nanoclusters embedded in a polystyrene thin-film) is found to narrow the energy gap between the S1 and T1 states, which results in faster intersystem crossing and reverse intersystem crossing; thus, the ratio of TADF to phosphorescence varies and the total PLQY is increased to 32%. This highly luminescent nanocluster holds promise in imaging, sensing and optoelectronic applications.
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Affiliation(s)
- Zhongyu Liu
- Department of Chemistry, Carnegie Mellon University. Pittsburgh, PA 15213, USA.
| | - Lianshun Luo
- Department of Chemistry, Carnegie Mellon University. Pittsburgh, PA 15213, USA.
| | - Jie Kong
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical Physics, University of Science and Technology of China. Hefei, Anhui 230026, China
| | - Ellen Kahng
- Department of Chemistry, Carnegie Mellon University. Pittsburgh, PA 15213, USA.
| | - Meng Zhou
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical Physics, University of Science and Technology of China. Hefei, Anhui 230026, China
| | - Rongchao Jin
- Department of Chemistry, Carnegie Mellon University. Pittsburgh, PA 15213, USA.
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14
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Lv W, Ma YJ, Wang AN, Mu Y, Niu SW, Wei L, Dong WL, Ding XY, Qiang YB, Li XY, Wang GM. Al 8 Cluster-Based Metal Halide Frameworks: Balancing Singlet-Triplet Excited States to Achieve White Light and Multicolor Luminescence. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2306713. [PMID: 37919863 DOI: 10.1002/smll.202306713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Revised: 10/01/2023] [Indexed: 11/04/2023]
Abstract
Luminescent metal clusters have attracted great interest in current research; however, the design synthesis of Al clusters with color-tunable luminescence remains challenging. Herein, an [Al8 (OH)8 (NA)16 ] (Al8 , HNA = nicotinic acid) molecular cluster with dual luminescence properties of fluorescence and room-temperature phosphorescence (RTP) is synthesized by choosing HNA ligand as phosphor. Its prompt photoluminescence (PL) spectrum exhibits approximately white light emission at room temperature. Considering that halogen atoms can be used to regulate the RTP property by balancing the singlet and triplet excitons, different CdX2 (X- = Cl- , Br- , I- ) are introduced into the reactive system of the Al8 cluster, and three new Al8 cluster-based metal-organic frameworks, {[Al8 Cd3 Cl5 (OH)8 (NA)17 H2 O]·2HNA}n (CdCl2 -Al8 ), {[Al8 Cd4 Br7 (OH)8 (NA)16 CH3 CN]·NA·HNA}n (CdBr2 -Al8 ) and {[Al8 Cd8 I16 (OH)8 (NA)16 ]}n (CdI2 -Al8 ) are successfully obtained. They realize the color tunability from blue to yellow at room temperature. The origination of fluorescence and phosphorescence has also been illustrated by structure-property analysis and theoretical calculation. This work provides new insights into the design of multicolor luminescent metal cluster-based materials and develops advanced photo-functional materials for multicolor display, anti-counterfeiting, and encryption applications.
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Affiliation(s)
- Wei Lv
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Yu-Juan Ma
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - A-Ni Wang
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Ying Mu
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Shu-Wen Niu
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Li Wei
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Wen-Long Dong
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Xue-Yao Ding
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Yu-Bin Qiang
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Xiao-Yu Li
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Guo-Ming Wang
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 266071, P. R. China
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15
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Chandrashekar P, Sardar G, Sengupta T, Reber AC, Mondal PK, Kabra D, Khanna SN, Deria P, Mandal S. Modulation of Singlet-Triplet Gap in Atomically Precise Silver Cluster-Assembled Material. Angew Chem Int Ed Engl 2024; 63:e202317345. [PMID: 38078805 DOI: 10.1002/anie.202317345] [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: 11/14/2023] [Indexed: 12/30/2023]
Abstract
Silver cluster-based solids have garnered considerable attention owing to their tunable luminescence behavior. While surface modification has enabled the construction of stable silver clusters, controlling interactions among clusters at the molecular level has been challenging due to their tendency to aggregate. Judicious choice of stabilizing ligands becomes pivotal in crafting a desired assembly. However, detailed photophysical behavior as a function of their cluster packing remained unexplored. Here, we modulate the packing pattern of Ag12 clusters by varying the nitrogen-based ligand. CAM-1 formed through coordination of the tritopic linker molecule and NC-1 with monodentate pyridine ligand; established via non-covalent interactions. Both the assemblies show ligand-to-metal-metal charge transfer (LMMCT) based cluster-centered emission band(s). Temperature-dependent photoluminescence spectra exhibit blue shifts at higher temperatures, which is attributed to the extent of the thermal reverse population of the S1 state from the closely spaced T1 state. The difference in the energy gap (ΔEST ) dictated by their assemblies played a pivotal role in the way that Ag12 cluster assembly in CAM-1 manifests a wider ΔEST and thus requires higher temperatures for reverse intersystem crossing (RISC) than assembly of NC-1. Such assembly-defined photoluminescence properties underscore the potential toolkit to design new cluster- assemblies with tailored optoelectronic properties.
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Affiliation(s)
- Priyanka Chandrashekar
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram, Kerala, 695551, India
| | - Gopa Sardar
- Department of Physics, Indian Institute of Technology Bombay Powai, Mumbai, 400076, India
| | - Turbasu Sengupta
- Department of Physics, Virginia Commonwealth University, Richmond, VA-23220, USA
| | - Arthur C Reber
- Department of Physics, Virginia Commonwealth University, Richmond, VA-23220, USA
| | - Pradip Kumar Mondal
- Elettra-Sincrotrone Trieste, S.S. 14 Km 163.5 in Area Science Park, Basovizza, 34149, Trieste, Italy
| | - Dinesh Kabra
- Department of Physics, Indian Institute of Technology Bombay Powai, Mumbai, 400076, India
| | - Shiv N Khanna
- Department of Physics, Virginia Commonwealth University, Richmond, VA-23220, USA
| | - Pravas Deria
- School of Chemical & Biomolecular Science, Southern Illinois University, 1245 Lincoln Drive, Carbondale, IL-62901, USA
| | - Sukhendu Mandal
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram, Kerala, 695551, India
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16
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Liu Z, Luo L, Jin R. Visible to NIR-II Photoluminescence of Atomically Precise Gold Nanoclusters. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2309073. [PMID: 37922431 DOI: 10.1002/adma.202309073] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 10/23/2023] [Indexed: 11/05/2023]
Abstract
Atomically precise gold nanoclusters (NCs) have emerged as a new class of precision materials and attracted wide interest in recent years. One of the unique properties of such nanoclusters pertains to their photoluminescence (PL), for it can widely span visible to near-infrared-I and -II wavelengths (NIR-I/II), and even beyond 1700 nm by manipulating the size, structure, and composition. The current research efforts focus on the structure-PL correlation and the development of strategies for raising the PL quantum yields, which is nontrivial when moving from the visible to the near-infrared wavelengths, especially in the NIR-II regions. This review summarizes the recent progress in the field, including i) the types of PL observed in gold NCs such as fluorescence, phosphorescence, and thermally activated delayed fluorescence, as well as dual emission; ii) some effective strategies that are devised to improve the PL quantum yield (QY) of gold NCs, such as heterometal doping, surface rigidification, and core phonon engineering, with double-digit QYs for the NIR PL on the horizons; and iii) the applications of luminescent gold NCs in bioimaging, photosensitization, and optoelectronics. Finally, the remaining challenges and opportunities for future research are highlighted.
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Affiliation(s)
- Zhongyu Liu
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania, 15213, USA
| | - Lianshun Luo
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania, 15213, USA
| | - Rongchao Jin
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania, 15213, USA
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17
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Liu Y, Li H, Zou X, Kang X, Zhu M. Parasitism in Metal Nanoclusters: A Case Study of (AuAg) 25·(AuAg) 27. ACS NANO 2024; 18:1555-1562. [PMID: 38166168 DOI: 10.1021/acsnano.3c09207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2024]
Abstract
Studying the interactions of atomically precise metal nanoclusters in their assembly systems is of great significance in the nanomaterial research field, which has attracted increasing interest in the last few decades. Herein, we report the cocrystallization of two oppositely charged atomically precise metal nanoclusters in one unit cell: [Au1Ag24(SR)18]- ((AuAg)25 for short) and [AuxAg27-x(Dppf)4(SR)9]2+ (x = 10-12; (AuAg)27 for short) with a 1:1 ratio. (AuAg)27 could maintain its structure in the presence of (AuAg)25, whether in the crystalline and the solution state, while the metastable (AuAg)27 component underwent a spontaneous transformation to (AuAg)16(Dppf)2(SR)8 after dissociating the (AuAg)25 component from this cocrystal, demonstrating the "parasitism" relationship of the (AuAg)27 component over (AuAg)25 in this dual-cluster system. This work enriches the family of cluster-based assemblies and elucidates the delicate relationship between nanoparticles of cocrystals.
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Affiliation(s)
- Yanming Liu
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Institutes of Physical Science and Information Technology and Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei, Anhui 230601, People's Republic of China
| | - Hao Li
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Institutes of Physical Science and Information Technology and Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei, Anhui 230601, People's Republic of China
| | - Xuejuan Zou
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Institutes of Physical Science and Information Technology and Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei, Anhui 230601, People's Republic of China
| | - Xi Kang
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Institutes of Physical Science and Information Technology and Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei, Anhui 230601, People's Republic of China
| | - Manzhou Zhu
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Institutes of Physical Science and Information Technology and Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei, Anhui 230601, People's Republic of China
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18
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Chang B, Chen J, Bao J, Sun T, Cheng Z. Molecularly Engineered Room-Temperature Phosphorescence for Biomedical Application: From the Visible toward Second Near-Infrared Window. Chem Rev 2023; 123:13966-14037. [PMID: 37991875 DOI: 10.1021/acs.chemrev.3c00401] [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: 11/24/2023]
Abstract
Phosphorescence, characterized by luminescent lifetimes significantly longer than that of biological autofluorescence under ambient environment, is of great value for biomedical applications. Academic evidence of fluorescence imaging indicates that virtually all imaging metrics (sensitivity, resolution, and penetration depths) are improved when progressing into longer wavelength regions, especially the recently reported second near-infrared (NIR-II, 1000-1700 nm) window. Although the emission wavelength of probes does matter, it is not clear whether the guideline of "the longer the wavelength, the better the imaging effect" is still suitable for developing phosphorescent probes. For tissue-specific bioimaging, long-lived probes, even if they emit visible phosphorescence, enable accurate visualization of large deep tissues. For studies dealing with bioimaging of tiny biological architectures or dynamic physiopathological activities, the prerequisite is rigorous planning of long-wavelength phosphorescence, being aware of the cooperative contribution of long wavelengths and long lifetimes for improving the spatiotemporal resolution, penetration depth, and sensitivity of bioimaging. In this Review, emerging molecular engineering methods of room-temperature phosphorescence are discussed through the lens of photophysical mechanisms. We highlight the roles of phosphorescence with emission from visible to NIR-II windows toward bioapplications. To appreciate such advances, challenges and prospects in rapidly growing studies of room-temperature phosphorescence are described.
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Affiliation(s)
- Baisong Chang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, Hubei 430070, China
| | - Jie Chen
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, Hubei 430070, China
| | - Jiasheng Bao
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, Hubei 430070, China
| | - Taolei Sun
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, Hubei 430070, China
| | - Zhen Cheng
- State Key Laboratory of Drug Research, Molecular Imaging Center, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
- Shandong Laboratory of Yantai Drug Discovery, Bohai Rim Advanced Research Institute for Drug Discovery, Yantai, Shandong 264000, China
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19
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Yoshida K, Arima D, Mitsui M. Dissecting the Triplet-State Properties and Intersystem Crossing Mechanism of the Ligand-Protected Au 13 Superatom. J Phys Chem Lett 2023:10967-10973. [PMID: 38038710 DOI: 10.1021/acs.jpclett.3c02977] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2023]
Abstract
Icosahedral Au13 nanoclusters are among the most typical superatoms and are of great interest as promising building blocks for nanocluster-assembled materials. Herein, the key parameters involved in the intersystem crossing (ISC) process of [Au13(dppe)5Cl2]3+ (Au13; dppe = 1,2-bis(diphenylphosphino)ethane) were characterized. Quenching experiments using aromatic compounds revealed that the T1 energy of Au13 is 1.63 eV. An integrative interpretation of our experimental results and the relevant literature uncovered important facts concerning the Au13 superatom: the ISC quantum yield is unity due to the ultrafast ISC (∼1012 s-1), the lowest absorption band includes contributions of direct singlet-triplet transitions, and there exists a large S1-T1 gap of 0.73 eV. To explain the efficient ISC, the El-Sayed rule was applied to the superatomic orbitals corresponding to the excited-state hole/electron distributions obtained from theoretical calculations. The strong spin-orbit coupling between the S1 and T2-T4 states offers a reasonable explanation for the ultrafast ISC.
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Affiliation(s)
- Kouta Yoshida
- Department of Chemistry, College of Science, Rikkyo University, 3-34-1, Nishiikebukuro, Toshima-ku, Tokyo 171-8501, Japan
| | - Daichi Arima
- Department of Chemistry, College of Science, Rikkyo University, 3-34-1, Nishiikebukuro, Toshima-ku, Tokyo 171-8501, Japan
| | - Masaaki Mitsui
- Department of Chemistry, College of Science, Rikkyo University, 3-34-1, Nishiikebukuro, Toshima-ku, Tokyo 171-8501, Japan
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20
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Xu C, Jin Y, Fang H, Zheng H, Carozza JC, Pan Y, Wei PJ, Zhang Z, Wei Z, Zhou Z, Han H. A High-Nuclearity Copper Sulfide Nanocluster [S-Cu 50] Featuring a Double-Shell Structure Configuration with Cu(II)/Cu(I) Valences. J Am Chem Soc 2023; 145:25673-25685. [PMID: 37889075 DOI: 10.1021/jacs.3c08549] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2023]
Abstract
This work represents an important step in the quest for creating atomically precise binary semiconductor nanoclusters (BS-NCs). Compared with coinage metal NCs, the preparation of BS-NCs requires strict control of the reaction kinetics to guarantee the formation of an atomically precise single phase under mild conditions, which otherwise could lead to the generation of multiple phases. Herein, we developed an acid-assisted thiolate dissociation approach that employs suitable acid to induce cleavage of the S-C bonds in the Cu-S-R (R = alkyl) precursor, spontaneously fostering the formation of the [Cu-S-Cu] skeleton upon the addition of extra Cu sources. Through this method, a high-nuclearity copper sulfide nanocluster, Cu50S12(SC(CH3)3)20(CF3COO)12 (abbreviated as [S-Cu50] hereafter), has been successfully prepared in high yield, and its atomic structure was accurately modeled through single-crystal X-ray diffraction. It was revealed that [S-Cu50] exhibits a unique double-shell structural configuration of [Cu14S12]@[Cu36S20], and the innermost [Cu14] moiety displays a rhombic dodecahedron geometry, which has never been observed in previously synthesized Cu metal, hydride, or chalcogenide NCs. Importantly, [S-Cu50] represents the first example incorporating mixed Cu(II)/Cu(I) valences in reported atomically precise copper sulfide NCs, which was unambiguously confirmed by XPS, EPR, and XANES. In addition, the electronic structure of [S-Cu50] was established by a variety of optical investigations, including absorption, photoluminescence, and ultrafast transient absorption spectroscopies, as well as theoretical calculations. Moreover, [S-Cu50] is air-stable and demonstrates electrocatalytic activity in ORR with a four-electron pathway.
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Affiliation(s)
- Cheng Xu
- Interdisciplinary Materials Research Center, School of Materials Science and Engineering, Tongji University, Shanghai 201804, China
| | - Yuhao Jin
- Interdisciplinary Materials Research Center, School of Materials Science and Engineering, Tongji University, Shanghai 201804, China
| | - Hao Fang
- Interdisciplinary Materials Research Center, School of Materials Science and Engineering, Tongji University, Shanghai 201804, China
| | - Huijuan Zheng
- Interdisciplinary Materials Research Center, School of Materials Science and Engineering, Tongji University, Shanghai 201804, China
| | - Jesse C Carozza
- Department of Chemistry, University at Albany, Albany, New York 12222, United States
| | - Yanxiong Pan
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Ping-Jie Wei
- Key Laboratory for Advanced Materials of MOE & Department of Chemistry, East China University of Science and Technology Shanghai, Shanghai 200237, China
| | - Zhenyi Zhang
- Bruker (Beijing) Scientific Technology Co. Ltd., Shanghai 200233, China
| | - Zheng Wei
- Department of Chemistry, University at Albany, Albany, New York 12222, United States
| | - Zheng Zhou
- Interdisciplinary Materials Research Center, School of Materials Science and Engineering, Tongji University, Shanghai 201804, China
| | - Haixiang Han
- Interdisciplinary Materials Research Center, School of Materials Science and Engineering, Tongji University, Shanghai 201804, China
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21
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Chandrashekar P, Jena MK, Krishnan G, Pathak B, Mandal S. Photoluminescence Properties of a Chiral One-Dimensional Silver Chalcogenolate Chain. Inorg Chem 2023. [PMID: 37988555 DOI: 10.1021/acs.inorgchem.3c03292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2023]
Abstract
Atom-precise metal nanoclusters, which contain a few tens to hundreds of atoms, have drawn significant interest due to their interesting physicochemical properties. Structural analysis reveals a fundamental architecture characterized by a central core or kernel linked to a staple motif with metal-ligand bonding playing a pivotal role. Ligands not only protect the surface but also exert a significant influence in determining the overall assembly of the larger superstructures. The assemblies of nanoclusters are driven by weak interaction between the ligand molecules; it also depends on the ligand type and functional group present. Here, we report an achiral ligand and Ag(I)···Ag(I) interaction-driven spontaneous resolution of silver-thiolate structure, [Ag18(C6H11S)12(CF3COO)6(DMA)2], where silver atoms and cyclohexanethiolate are connected to form a one-dimensional chain with helicity. Notably, silver atoms adopt different types of coordination modes and geometries. The photoluminescence properties of the one-dimensional (1D) chain structure were investigated, and it was found to exhibit excitation-dependent emission properties attributed to hydrogen-bonding interactions. Experimental and theoretical investigations corroborate the presence of triplet-emitting ligand-to-metal charge-transfer transitions.
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Affiliation(s)
- Priyanka Chandrashekar
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram, Thiruvananthapuram, Kerala 69551, India
| | - Milan Kumar Jena
- Department of Chemistry, Indian Institute of Technology (IIT) Indore, Indore, Madhya Pradesh 453552, India
| | - Gokul Krishnan
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram, Thiruvananthapuram, Kerala 69551, India
| | - Biswarup Pathak
- Department of Chemistry, Indian Institute of Technology (IIT) Indore, Indore, Madhya Pradesh 453552, India
| | - Sukhendu Mandal
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram, Thiruvananthapuram, Kerala 69551, India
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22
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Rashi, Kaur V, Devi A, Bain D, Sen T, Patra A. Probing the Fluorescence Intermittency of Bimetallic Nanoclusters using Single-Molecule Fluorescence Spectroscopy. J Phys Chem Lett 2023; 14:10166-10172. [PMID: 37925663 DOI: 10.1021/acs.jpclett.3c02823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2023]
Abstract
Single-molecule spectroscopy (SMS) is a unique and competent technique to study molecule dynamics and sense biomolecules precisely. The design of an ultrahigh-stability single fluorophore probe with excellent photostability and long-lived dark transient states for single-molecule fluorescence microscopy is challenging. Here, we found that the photostability of bimetallic AuAg28 nanoclusters is better than monometallic Ag29 nanoclusters. The photon antibunching experiments unveiled exceptional brightness and remarkable photostability with high survival times of up to 218 s with minimal blinking. AuAg28 NCs exhibited longer "on" times and shorter "off" times as compared to Ag29 NCs. The statistical analysis was performed on at least 100 molecules that showed single-step photobleaching and almost a 5-fold enhancement in intensity on Au doping in Ag29 NCs. The distinctive and tunable photophysics of metal NCs can offer huge potential in pushing single-molecule dynamic measurements to be carried out biologically.
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Affiliation(s)
- Rashi
- Institute of Nano Science and Technology, Sector-81, Knowledge City, SAS Nagar, Mohali 140306, India
| | - Vishaldeep Kaur
- Institute of Nano Science and Technology, Sector-81, Knowledge City, SAS Nagar, Mohali 140306, India
| | - Aarti Devi
- Institute of Nano Science and Technology, Sector-81, Knowledge City, SAS Nagar, Mohali 140306, India
| | - Dipankar Bain
- Institute of Nano Science and Technology, Sector-81, Knowledge City, SAS Nagar, Mohali 140306, India
| | - Tapasi Sen
- Institute of Nano Science and Technology, Sector-81, Knowledge City, SAS Nagar, Mohali 140306, India
| | - Amitava Patra
- Institute of Nano Science and Technology, Sector-81, Knowledge City, SAS Nagar, Mohali 140306, India
- School of Materials Sciences, Indian Association for the Cultivation of Science, Kolkata 700 032, India
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23
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Sevilla RC, Soebroto RJ, Kurniawan IS, Chen PW, Chang SH, Shen JL, Chou WC, Yeh JM, Huang HY, Yuan CT. Self-Trapped, Thermally Equilibrated Delayed Fluorescence Enables Low-Reabsorption Luminescent Solar Concentrators Based on Gold-Doped Silver Nanoclusters. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 37922121 DOI: 10.1021/acsami.3c13710] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2023]
Abstract
Reabsorption-free luminescent solar concentrators (LSCs) are crucial ingredients for photovoltaic windows. Atomically precise metal nanoclusters (NCs) with large Stokes-shifted photoluminescence (PL) hold great promise for applications in LSCs. However, a fundamental understanding of the PL mechanism, particularly on the excited-state interaction and exciton kinetics, is still lacking. Herein, we studied the exciton-phonon coupling and singlet/triplet exciton dynamics for gold-doped silver NCs in a solid matrix. Following photoexcitation, the excitons can be self-trapped via strong exciton-phonon coupling. Subsequently, rapid thermal equilibration between the singlet and triplet states occurs due to the coexistence of small energy splitting and spin-orbit coupling. Finally, broadband delayed fluorescence with a large Stokes shift can be generated, namely, self-trapped, thermally equilibrated delayed fluorescence (ST-TEDF). Benefiting from superior ST-TEDF, we demonstrated efficient LSCs with minimized reabsorption.
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Affiliation(s)
- Russel Cruz Sevilla
- Department of Physics, Chung Yuan Christian University, Taoyuan 320314, Taiwan
- Research Center for Semiconductor Materials and Advanced Optics, Chung Yuan Christian University, Taoyuan 320314, Taiwan
| | - Ruth Jeane Soebroto
- Department of Physics, Chung Yuan Christian University, Taoyuan 320314, Taiwan
- Research Center for Semiconductor Materials and Advanced Optics, Chung Yuan Christian University, Taoyuan 320314, Taiwan
| | - Irwan Saleh Kurniawan
- Department of Physics, Chung Yuan Christian University, Taoyuan 320314, Taiwan
- Research Center for Semiconductor Materials and Advanced Optics, Chung Yuan Christian University, Taoyuan 320314, Taiwan
| | - Po-Wen Chen
- Physics Division, National Atomic Research Institute, Taoyuan 325207, Taiwan
| | - Sheng Hsiung Chang
- Department of Physics, Chung Yuan Christian University, Taoyuan 320314, Taiwan
- Research Center for Semiconductor Materials and Advanced Optics, Chung Yuan Christian University, Taoyuan 320314, Taiwan
| | - Ji-Lin Shen
- Department of Physics, Chung Yuan Christian University, Taoyuan 320314, Taiwan
- Research Center for Semiconductor Materials and Advanced Optics, Chung Yuan Christian University, Taoyuan 320314, Taiwan
| | - Wu-Ching Chou
- Department of Electrophysics, National Yang Ming Chiao Tung University, Hsinchu 300093, Taiwan
| | - Jui-Ming Yeh
- Department of Chemistry, Chung Yuan Christian University, Taoyuan 320314, Taiwan
| | - Hsiu-Ying Huang
- Department of Physics, Chung Yuan Christian University, Taoyuan 320314, Taiwan
- Research Center for Semiconductor Materials and Advanced Optics, Chung Yuan Christian University, Taoyuan 320314, Taiwan
| | - Chi-Tsu Yuan
- Department of Physics, Chung Yuan Christian University, Taoyuan 320314, Taiwan
- Research Center for Semiconductor Materials and Advanced Optics, Chung Yuan Christian University, Taoyuan 320314, Taiwan
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24
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Liu Z, Zhou M, Luo L, Wang Y, Kahng E, Jin R. Elucidating the Near-Infrared Photoluminescence Mechanism of Homometal and Doped M 25(SR) 18 Nanoclusters. J Am Chem Soc 2023; 145:19969-19981. [PMID: 37642696 PMCID: PMC10510323 DOI: 10.1021/jacs.3c06543] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Indexed: 08/31/2023]
Abstract
More than a decade of research on the photoluminescence (PL) of classic Au25(SR)18 and its doped nanoclusters (NCs) still leaves many fundamental questions unanswered due to the complex electron dynamics. Here, we revisit the homogold Au25 (ligands omitted hereafter) and doped NCs, as well as the Ag25 and doped ones, for a comparative study to disentangle the influencing factors and elucidate the PL mechanism. We find that the strong electron-vibration coupling in Au25 leads to weak PL in the near-infrared region (∼1000 nm, quantum yield QY = 1% in solution at room temperature). Heteroatom doping of Au25 with a single Cd or Hg atom strengthens the coupling of the exciton with staple vibrations but reduces the coupling with the core breathing and quadrupolar modes. The QYs of the three MAu24 NCs (M = Hg, Au, and Cd) follow a linear relation with their PL lifetimes, suggesting a mechanism of suppressed nonradiative decay in PL enhancement. In contrast, the weaker electron-vibration coupling in Ag25 leads to higher PL (QY = 3.5%), and single Au atom doping further leads to a 5× enhancement of the radiative rate and a suppression of nonradiative decay rate (i.e., twice the PL lifetime of Ag25) in AuAg24 (hence, QY 35%), but doping more Au atoms results in gold distribution to staple motifs and thus triggering of strong electron-vibration coupling as in the MAu24 NCs, hence, counteracting the radiative enhancement effect and giving rise to only 5% QY for AuxAg25-x (x = 3-10). The obtained insights will provide guidance for the design of metal NCs with high PL for lighting, sensing, and optoelectronic applications.
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Affiliation(s)
- Zhongyu Liu
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - Meng Zhou
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - Lianshun Luo
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - Yitong Wang
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - Ellen Kahng
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - Rongchao Jin
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
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25
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Ruan C, Xiang H, Yan H, Deng Y, Zhao Y, Xu CQ, Li J, Yao C. Au 16 Cd 16 (SC 6 H 11 ) 20 : A Glance at Structure-Property Relationship. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023:e2305056. [PMID: 37632298 DOI: 10.1002/smll.202305056] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 07/23/2023] [Indexed: 08/27/2023]
Abstract
Doping Cd atom(s) into gold clusters is very promising in both theoretical study and practical applications. However, it has long been a challenge to synthesize heavily Cd-doped AuCd bimetallic clusters and thereby reveal their structure-property correlations. Herein a novel AuCd bimetallic cluster: Au16 Cd16 (SC6 H11 )20 (SC6 H11 denotes deprotonated cyclohexanethiol) with a Cd to Au atomic ratio of 1:1 is reported. The precise structure of the cluster determined by single crystal X-ray diffraction demonstrates that it has a unique hexatetrahedron Au14 core and a distinctive shell. Intriguingly, due to the special protecting motifs, the cluster exhibits high stability in various conditions studied, indicating that the geometric structure is crucial in determining the stability of the cluster. Most importantly, the photothermal property of the cluster has been investigated in comparison with those of M13 -kernel (M denotes metal atoms) clusters, and the results imply that the compactness and the Cd atom doping of the core play important roles in dictating the photothermal effect of the cluster. The authors believe that this work will provide some ideas for the rational design of clusters with high stability and excellent photothermal property.
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Affiliation(s)
- Chenhao Ruan
- Frontiers Science Center for Flexible Electronics, Institute of Flexible Electronics (IFE) and Ningbo Institute of NPU, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an, 710072, China
| | - Huixin Xiang
- Frontiers Science Center for Flexible Electronics, Institute of Flexible Electronics (IFE) and Ningbo Institute of NPU, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an, 710072, China
| | - Hao Yan
- Frontiers Science Center for Flexible Electronics, Institute of Flexible Electronics (IFE) and Ningbo Institute of NPU, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an, 710072, China
| | - Yuanxin Deng
- Strait Institute of Flexible Electronics, Fujian Normal University, Fuzhou, 350117, China
| | - Yue Zhao
- Coordination Chemistry Institute, State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Cong-Qiao Xu
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Jun Li
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China
- Department of Chemistry, Tsinghua University, Beijing, 10084, China
| | - Chuanhao Yao
- Frontiers Science Center for Flexible Electronics, Institute of Flexible Electronics (IFE) and Ningbo Institute of NPU, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an, 710072, China
- Strait Institute of Flexible Electronics, Fujian Normal University, Fuzhou, 350117, China
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26
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Mahato P, Thomas AS, Yadav R, Rai S, Shekhar S, Mukherjee S. Solvent-Induced Modulation in the Optical Properties of Copper Nanoclusters and Revealing the Isomeric Effect of Templates. Chem Asian J 2023; 18:e202300442. [PMID: 37368476 DOI: 10.1002/asia.202300442] [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: 05/18/2023] [Revised: 06/19/2023] [Accepted: 06/26/2023] [Indexed: 06/28/2023]
Abstract
The solvent plays an influential role in controlling the nucleation process of metal nanoclusters (MNCs) and thereby significantly modulates their optical signatures. Herein, we have demonstrated the solvent-induced modulation in the optical properties of copper nanoclusters (CuNCs), primarily governed by the solvent polarity. During the preparation of para-mercaptobenzoic acid (p-MBA)-templated CuNCs, the simultaneous formation of blue-emitting CuNCs (B-CuNCs) and red-emitting CuNCs (R-CuNCs) were observed up to 7 h of reaction time, reflected from the systematic increment in the photoluminescence (PL) intensity at 420 nm and 615 nm, respectively. However, after 7 h of reaction time, the exclusive formation of B-CuNCs was observed. Such simultaneous growth and depletion dynamics of CuNCs result in a significant modulation in their optical properties. The variation of the solvent from water to less polar solvents such as DMSO and DMF restricts this inter-cluster dynamics by stabilizing both the CuNCs (B-CuNCs and R-CuNCs). Thereby, a single-component White Light Emission (WLE) was realized in DMSO with CIE coordinates (0.37, 0.36). The isomeric effect of the templates has also been investigated which extensively controls the optical and catalytic properties of the CuNCs.
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Affiliation(s)
- Paritosh Mahato
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal, 462 066, Madhya Pradesh, India
| | - Amar S Thomas
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal, 462 066, Madhya Pradesh, India
| | - Rahul Yadav
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal, 462 066, Madhya Pradesh, India
| | - Saurabh Rai
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal, 462 066, Madhya Pradesh, India
| | - Shashi Shekhar
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal, 462 066, Madhya Pradesh, India
| | - Saptarshi Mukherjee
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal, 462 066, Madhya Pradesh, India
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27
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Arima D, Mitsui M. Structurally Flexible Au-Cu Alloy Nanoclusters Enabling Efficient Triplet Sensitization and Photon Upconversion. J Am Chem Soc 2023; 145:6994-7004. [PMID: 36939572 DOI: 10.1021/jacs.3c00870] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/21/2023]
Abstract
Ligand-protected noble-metal nanoclusters exhibit an innately triplet nature and have been recently recognized as emerging platforms for triplet sensitizers of photon upconversion (UC) via triplet-triplet annihilation. Herein, we report that a structurally flexible Au-Cu alloy nanocluster, [Au4Cu4(S-Adm)5(DPPM)2]+ (Au4Cu4; S-Adm = 1-adamantanethiolate, DPPM = bis(diphenylphosphino)methane), exhibited favorable sensitizer properties and superior UC performance. Contrary to the structurally rigid Au2Cu6(S-Adm)6(TPP)2 (Au2Cu6, TPP = triphenylphosphine), Au4Cu4 exhibited significantly better sensitizer characteristics, such as a near-unity quantum yield for intersystem crossing (ISC), long triplet lifetime (ca. 8 μs), and efficient triplet energy transfer (TET). The efficient ISC of Au4Cu4 was attributed to the practically negligible activation barriers during the ISC process, which was caused by the spin-orbit interaction between the two isoenergetic isomers predicted by theoretical calculations. A series of aromatic molecules with different triplet energies were used as acceptors to reveal the driving force dependence of the TET rate constant (kTET). This dependency was analyzed to evaluate the triplet energy and sensitization ability of the alloy nanoclusters. The results showed that the maximum value of kTET for Au4Cu4 was seven times larger than that for Au2Cu6, which presumably reflects the structural/electronic fluctuations of Au4Cu4 during the triplet state residence. The combination of the Au4Cu4 sensitizer and the 9,10-diphenylanthracene (DPA) annihilator/emitter achieved UC with internal quantum yields of 14% (out of 50% maximum) and extremely low threshold intensities (2-26 mWcm-2). This performance far exceeds that of Au2Cu6 and is also outstanding among the organic-inorganic hybrid nanomaterials reported so far.
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Affiliation(s)
- Daichi Arima
- Department of Chemistry, College of Science, Rikkyo University, 3-34-1, Nishiikebukuro, Toshima-ku, Tokyo 171-8501, Japan
| | - Masaaki Mitsui
- Department of Chemistry, College of Science, Rikkyo University, 3-34-1, Nishiikebukuro, Toshima-ku, Tokyo 171-8501, Japan
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28
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Mordini D, Mavridi-Printezi A, Menichetti A, Cantelli A, Li X, Montalti M. Luminescent Gold Nanoclusters for Bioimaging: Increasing the Ligand Complexity. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:nano13040648. [PMID: 36839016 PMCID: PMC9960743 DOI: 10.3390/nano13040648] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 02/03/2023] [Accepted: 02/04/2023] [Indexed: 05/31/2023]
Abstract
Fluorescence, and more in general, photoluminescence (PL), presents important advantages for imaging with respect to other diagnostic techniques. In particular, detection methodologies exploiting fluorescence imaging are fast and versatile; make use of low-cost and simple instrumentations; and are taking advantage of newly developed powerful, low-cost, light-based electronic devices, such as light sources and cameras, used in huge market applications, such as civil illumination, computers, and cellular phones. Besides the aforementioned simplicity, fluorescence imaging offers a spatial and temporal resolution that can hardly be achieved with alternative methods. However, the two main limitations of fluorescence imaging for bio-application are still (i) the biological tissue transparency and autofluorescence and (ii) the biocompatibility of the contrast agents. Luminescent gold nanoclusters (AuNCs), if properly designed, combine high biocompatibility with PL in the near-infrared region (NIR), where the biological tissues exhibit higher transparency and negligible autofluorescence. However, the stabilization of these AuNCs requires the use of specific ligands that also affect their PL properties. The nature of the ligand plays a fundamental role in the development and sequential application of PL AuNCs as probes for bioimaging. Considering the importance of this, in this review, the most relevant and recent papers on AuNCs-based bioimaging are presented and discussed highlighting the different functionalities achieved by increasing the complexity of the ligand structure.
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29
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Chen L, Liang T, Wang L. Growth Pattern of Large Morse Clusters with Medium-Range Potentials. J Phys Chem Lett 2022; 13:9801-9808. [PMID: 36227940 DOI: 10.1021/acs.jpclett.2c02875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Due to the extremely complex potential energy surfaces of large Morse clusters with medium-range potentials (i.e., ρ = 6 and 10), global optimization studies in the literature are limited to a cluster size (N) of ≤240. Starting from completely random structures, we successfully systematically studied Morse clusters with up to 700 atoms using our unbiased fuzzy global optimization (FGO) method. While all of the putative global minima reported previously have been efficiently obtained, new global minima with lower energies are identified for N values of 176, 258, 485, 561, 817, and 923 with ρ = 6 and for N values of 151, 202, 226, and 229 with ρ = 10. A detailed growth pattern and magic clusters are obtained. For the first time, we find that a central vacancy is present in Morse clusters containing 542, 543, 548, and 922 atoms with ρ = 6. FGO has achieved high performance in large clusters with different interatomic interaction ranges, thus showing great application potential in the global structure optimization of general clusters.
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Affiliation(s)
- Liping Chen
- Hangzhou Institute of Advanced Studies, Zhejiang Normal University, Hangzhou311231, China
- Key Laboratory of Excited-State Materials of Zhejiang Province, Zhejiang University, Hangzhou310027, China
| | - Tao Liang
- Hangzhou Institute of Advanced Studies, Zhejiang Normal University, Hangzhou311231, China
| | - Linjun Wang
- Key Laboratory of Excited-State Materials of Zhejiang Province, Department of Chemistry, Zhejiang University, Hangzhou310027, China
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30
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Tailoring of a bionic bifunctional cellulose nanocrystal-based gold nanocluster probe for the detection of intracellular pathological biomarkers. Int J Biol Macromol 2022; 224:1079-1090. [DOI: 10.1016/j.ijbiomac.2022.10.192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 10/03/2022] [Accepted: 10/20/2022] [Indexed: 11/05/2022]
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