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Zhai L, Gebre ST, Chen B, Xu D, Chen J, Li Z, Liu Y, Yang H, Ling C, Ge Y, Zhai W, Chen C, Ma L, Zhang Q, Li X, Yan Y, Huang X, Li L, Guan Z, Tao CL, Huang Z, Wang H, Liang J, Zhu Y, Lee CS, Wang P, Zhang C, Gu L, Du Y, Lian T, Zhang H, Wu XJ. Epitaxial growth of highly symmetrical branched noble metal-semiconductor heterostructures with efficient plasmon-induced hot-electron transfer. Nat Commun 2023; 14:2538. [PMID: 37137913 PMCID: PMC10156852 DOI: 10.1038/s41467-023-38237-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Accepted: 04/21/2023] [Indexed: 05/05/2023] Open
Abstract
Epitaxial growth is one of the most commonly used strategies to precisely tailor heterostructures with well-defined compositions, morphologies, crystal phases, and interfaces for various applications. However, as epitaxial growth requires a small interfacial lattice mismatch between the components, it remains a challenge for the epitaxial synthesis of heterostructures constructed by materials with large lattice mismatch and/or different chemical bonding, especially the noble metal-semiconductor heterostructures. Here, we develop a noble metal-seeded epitaxial growth strategy to prepare highly symmetrical noble metal-semiconductor branched heterostructures with desired spatial configurations, i.e., twenty CdS (or CdSe) nanorods epitaxially grown on twenty exposed (111) facets of Ag icosahedral nanocrystal, albeit a large lattice mismatch (more than 40%). Importantly, a high quantum yield (QY) of plasmon-induced hot-electron transferred from Ag to CdS was observed in epitaxial Ag-CdS icosapods (18.1%). This work demonstrates that epitaxial growth can be achieved in heterostructures composed of materials with large lattice mismatches. The constructed epitaxial noble metal-semiconductor interfaces could be an ideal platform for investigating the role of interfaces in various physicochemical processes.
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Affiliation(s)
- Li Zhai
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
- Department of Chemistry, City University of Hong Kong, Hong Kong, China
- Hong Kong Branch of National Precious Metals Material Engineering Research Center (NPMM), City University of Hong Kong, Hong Kong, China
| | - Sara T Gebre
- Department of Chemistry, Emory University, Atlanta, GA, 30322, USA
| | - Bo Chen
- Department of Chemistry, City University of Hong Kong, Hong Kong, China
| | - Dan Xu
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Junze Chen
- College of Materials Science and Engineering, Sichuan University, Chengdu, Sichuan, 610065, China
| | - Zijian Li
- Department of Chemistry, City University of Hong Kong, Hong Kong, China
| | - Yawei Liu
- Department of Chemistry, Emory University, Atlanta, GA, 30322, USA
| | - Hua Yang
- Department of Chemistry, City University of Hong Kong, Hong Kong, China
| | - Chongyi Ling
- Department of Chemistry, City University of Hong Kong, Hong Kong, China
| | - Yiyao Ge
- Department of Chemistry, City University of Hong Kong, Hong Kong, China
| | - Wei Zhai
- Department of Chemistry, City University of Hong Kong, Hong Kong, China
| | - Changsheng Chen
- Department of Applied Physics, The Hong Kong Polytechnic University, Hung Hom, Hong Kong
| | - Lu Ma
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, NY, 11973, USA
| | - Qinghua Zhang
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China
| | - Xuefei Li
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Yujie Yan
- National Laboratory of Solid State Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China
| | - Xinyu Huang
- National Laboratory of Solid State Microstructures, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China
| | - Lujiang Li
- Department of Chemistry, City University of Hong Kong, Hong Kong, China
| | - Zhiqiang Guan
- Department of Chemistry, City University of Hong Kong, Hong Kong, China
| | - Chen-Lei Tao
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Zhiqi Huang
- Department of Chemistry, City University of Hong Kong, Hong Kong, China
| | - Hongyi Wang
- Department of Chemistry, City University of Hong Kong, Hong Kong, China
| | - Jinze Liang
- Department of Chemistry, City University of Hong Kong, Hong Kong, China
| | - Ye Zhu
- Department of Applied Physics, The Hong Kong Polytechnic University, Hung Hom, Hong Kong
| | - Chun-Sing Lee
- Department of Chemistry, City University of Hong Kong, Hong Kong, China
| | - Peng Wang
- National Laboratory of Solid State Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China
- Department of Physics, University of Warwick, Coventry, CV4 7AL, UK
| | - Chunfeng Zhang
- National Laboratory of Solid State Microstructures, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China
| | - Lin Gu
- Beijing National Center for Electron Microscopy and Laboratory of Advanced Materials, Department of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China
| | - Yonghua Du
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, NY, 11973, USA
| | - Tianquan Lian
- Department of Chemistry, Emory University, Atlanta, GA, 30322, USA.
| | - Hua Zhang
- Department of Chemistry, City University of Hong Kong, Hong Kong, China.
- Hong Kong Branch of National Precious Metals Material Engineering Research Center (NPMM), City University of Hong Kong, Hong Kong, China.
- Shenzhen Research Institute, City University of Hong Kong, Shenzhen, 518057, China.
| | - Xue-Jun Wu
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China.
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Gebre ST, Kiefer LM, Guo F, Yang KR, Miller C, Liu Y, Kubiak CP, Batista VS, Lian T. Amine Hole Scavengers Facilitate Both Electron and Hole Transfer in a Nanocrystal/Molecular Hybrid Photocatalyst. J Am Chem Soc 2023; 145:3238-3247. [PMID: 36706437 PMCID: PMC9912264 DOI: 10.1021/jacs.2c13464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
A well-known catalyst, fac-Re(4,4'-R2-bpy)(CO)3Cl (bpy = bipyridine; R = COOH) (ReC0A), has been widely studied for CO2 reduction; however, its photocatalytic performance is limited due to its narrow absorption range. Quantum dots (QDs) are efficient light harvesters that offer several advantages, including size tunability and broad absorption in the solar spectrum. Therefore, photoinduced CO2 reduction over a broad range of the solar spectrum could be enabled by ReC0A catalysts heterogenized on QDs. Here, we investigate interfacial electron transfer from Cd3P2 QDs to ReC0A complexes covalently bound on the QD surface, induced by photoexcitation of the QD. We explore the effect of triethylamine, a sacrificial hole scavenger incorporated to replenish the QD with electrons. Through combined transient absorption spectroscopic and computational studies, we demonstrate that electron transfer from Cd3P2 to ReC0A can be enhanced by a factor of ∼4 upon addition of triethylamine. We hypothesize that the rate enhancement is a result of triethylamine possibly altering the energetics of the Cd3P2-ReC0A system by interacting with the quantum dot surface, deprotonation of the quantum dot, and preferential solvation, resulting in a shift of the conduction band edge to more negative potentials. We also observe the rate enhancement in other QD-electron acceptor systems. Our findings provide mechanistic insights into hole scavenger-quantum dot interactions and how they may influence photoinduced interfacial electron transfer processes.
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Affiliation(s)
- Sara T Gebre
- Department of Chemistry, Emory University, Atlanta, Georgia 30322, United States
| | - Laura M Kiefer
- Department of Chemistry, Emory University, Atlanta, Georgia 30322, United States
| | - Facheng Guo
- Department of Chemistry, Yale University, New Haven, Connecticut 06511, United States
| | - Ke R Yang
- Department of Chemistry, Yale University, New Haven, Connecticut 06511, United States
| | - Christopher Miller
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, MC 0358, La Jolla, California 92093, United States
| | - Yawei Liu
- Department of Chemistry, Emory University, Atlanta, Georgia 30322, United States
| | - Clifford P Kubiak
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, MC 0358, La Jolla, California 92093, United States
| | - Victor S Batista
- Department of Chemistry, Yale University, New Haven, Connecticut 06511, United States
| | - Tianquan Lian
- Department of Chemistry, Emory University, Atlanta, Georgia 30322, United States
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Gebre ST, Cameron SA, Li L, Babu YS, Schramm VL. Intracellular rebinding of transition-state analogues provides extended in vivo inhibition lifetimes on human purine nucleoside phosphorylase. J Biol Chem 2017; 292:15907-15915. [PMID: 28794158 DOI: 10.1074/jbc.m117.801779] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Revised: 08/07/2017] [Indexed: 01/16/2023] Open
Abstract
Purine nucleoside phosphorylase (PNP) is part of the human purine salvage pathway. Its deficiency triggers apoptosis of activated T-cells, making it a target for T-cell proliferative disorders. Transition-state analogues of PNP bind with picomolar (pm) dissociation constants. Tight-binding PNP inhibitors show exceptionally long lifetimes on the target enzyme. We solve the mechanism of the target residence time by comparing functional off-rates in vitro and in vivo We report in vitro PNP-inhibitor dissociation rates (t½) from 3 to 31 min for seven Immucillins with dissociation constants of 115 to 6 pm Treatment of human erythrocytes with DADMe-Immucillin-H (DADMe-ImmH, 22 pm) causes complete inhibition of PNP. Loss of [14C]DADMe-ImmH from erythrocytes during multiple washes is slow and biphasic, resulting from inhibitor release and rebinding to PNP catalytic sites. The slow phase gave a t½ of 84 h. Loss of [14C]DADMe-ImmH from erythrocytes in the presence of excess unlabeled DADMe-ImmH increased to a t½ of 1.6 h by preventing rebinding. Thus, in human erythrocytes, rebinding of DADMe-ImmH is 50-fold more likely than diffusional loss of the inhibitor from the erythrocyte. Humans treated with a single oral dose of DADMe-ImmH in phase 1 clinical trials exhibit regain of PNP activity with a t½ of 59 days, corresponding to the erythropoiesis rate in humans. Thus, the PNP catalytic site recapture of DADMe-ImmH is highly favored in vivo We conclude that transition-state analogues with picomolar dissociation constants exhibit long lifetimes on their targets in vivo because the probability of the target enzyme recapturing inhibitor molecules is greater than diffusional loss to the extracellular space.
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Affiliation(s)
- Sara T Gebre
- From the Department of Biochemistry, Albert Einstein College of Medicine, Bronx, New York 10461 and
| | - Scott A Cameron
- From the Department of Biochemistry, Albert Einstein College of Medicine, Bronx, New York 10461 and
| | - Lei Li
- From the Department of Biochemistry, Albert Einstein College of Medicine, Bronx, New York 10461 and
| | - Y S Babu
- BioCryst Pharmaceuticals, Inc., Birmingham, Alabama 35244
| | - Vern L Schramm
- From the Department of Biochemistry, Albert Einstein College of Medicine, Bronx, New York 10461 and
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