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Yuan Q, Zhang Z, Kong X, Ling Z, Zhang H, Cheng L, Wang XB. Photodetachment photoelectron spectroscopy shows isomer-specific proton-coupled electron transfer reactions in phenolic nitrate complexes. Commun Chem 2024; 7:176. [PMID: 39122780 PMCID: PMC11315994 DOI: 10.1038/s42004-024-01257-5] [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: 05/14/2024] [Accepted: 07/25/2024] [Indexed: 08/12/2024] Open
Abstract
The oxidation of phenolic compounds is one of the most important reactions prevalent in various biological processes, often explicitly coupled with proton transfers (PTs). Quantitative descriptions and molecular-level understanding of these proton-coupled electron transfer (PCET) reactions have been challenging. This work reports a direct observation of PCET in photodetachment (PD) photoelectron spectroscopy (PES) of hydrogen-bonded phenolic (ArOH) nitrate (NO3-) complexes, in which a much slower rising edge provides a spectroscopic signature to evidence PCET. Electronic structure calculations unveil the PCET processes to be isomer-specific, occurred only in those with their HOMOs localized on ArOH, leading to charge-separated transient states ArOH•+·NO3- triggered by ionizing phenols while simultaneously promoting PT from ArOH•+ to NO3-. Importantly, this study showcases that gas-phase PD-PES is a generic means enabling to identify PCET reactions with explicit structural and binding information.
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Affiliation(s)
- Qinqin Yuan
- Department of Chemistry, Anhui University, 230601, Hefei, China
- Physical Sciences Division, Pacific Northwest National Laboratory, Richland, WA, 99352, USA
| | - Ziheng Zhang
- Department of Chemistry, Anhui University, 230601, Hefei, China
| | - Xiangtao Kong
- College of Chemistry and Chemical Engineering, Anyang Normal University, 455000, Anyang, China
| | - Zicheng Ling
- Department of Chemistry, Anhui University, 230601, Hefei, China
| | - Hanhui Zhang
- Institute of Advanced Science Facilities, 518107, Shenzhen, China.
| | - Longjiu Cheng
- Department of Chemistry, Anhui University, 230601, Hefei, China.
| | - Xue-Bin Wang
- Physical Sciences Division, Pacific Northwest National Laboratory, Richland, WA, 99352, USA.
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Shi Q, Pei Z, Song J, Li SJ, Wei D, Coote ML, Lan Y. Diradical Generation via Relayed Proton-Coupled Electron Transfer. J Am Chem Soc 2022; 144:3137-3145. [PMID: 35133141 DOI: 10.1021/jacs.1c12360] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Diradical generation followed by radical-radical cross-coupling is a powerful synthetic tool, but its detailed mechanism has yet to be established. Herein, we proposed and confirmed a new model named relayed proton-coupled electron transfer (relayed-PCET) for diradical generation, which could open a door for new radical-radical cross-coupling reactions. Quantum mechanics calculations were performed on a selected carbene-mediated diradical cross-coupling reaction model and a designed model, and the exact electronic structural changes during the radical processes have been observed for the first time.
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Affiliation(s)
- Qianqian Shi
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Zhipeng Pei
- Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia
| | - Jinshuai Song
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Shi-Jun Li
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Donghui Wei
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Michelle L Coote
- Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia
| | - Yu Lan
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, Henan 450001, China
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3
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Joy S, Periyasamy G. Influence of explicit water molecules on the charge migration dynamics of peptidomimetics: a DFT study. Theor Chem Acc 2020. [DOI: 10.1007/s00214-020-02609-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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4
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Sakla R, Singh A, Kaushik R, Kumar P, Jose DA. Allosteric Regulation in Carbon Monoxide (CO) Release: Anion Responsive CO-Releasing Molecule (CORM) Derived from (Terpyridine)phenol Manganese Tricarbonyl Complex with Colorimetric and Fluorescence Monitoring. Inorg Chem 2019; 58:10761-10768. [DOI: 10.1021/acs.inorgchem.9b00984] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Rahul Sakla
- Department of Chemistry, NIT-Kurukshetra, Kurukshetra-136119, Haryana, India
| | - Ajeet Singh
- Department of Chemistry, Prof. Rajendra Singh (Raju Bhaiya) Institute of Physical Sciences for Study and Research, V. B. S. Purrrvanchal University Jaunpur, U.P., India
| | - Rahul Kaushik
- Department of Chemistry, NIT-Kurukshetra, Kurukshetra-136119, Haryana, India
| | - Pawan Kumar
- Department of Chemistry, NIT-Kurukshetra, Kurukshetra-136119, Haryana, India
| | - D. Amilan Jose
- Department of Chemistry, NIT-Kurukshetra, Kurukshetra-136119, Haryana, India
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Ren G, Meng Q, Zhao J, Chu T. Molecular Design for Electron-Driven Double-Proton Transfer: A New Scenario for Excited-State Proton-Coupled Electron Transfer. J Phys Chem A 2018; 122:9191-9198. [DOI: 10.1021/acs.jpca.8b09264] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Guanghua Ren
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, PR China
- University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Qingchi Meng
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, PR China
- University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Jinfeng Zhao
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, PR China
| | - Tianshu Chu
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, PR China
- Institute for Computational Sciences and Engineering, Laboratory of New Fiber Material and Modern Textile, the Growing Base for State Key Laboratory, Qingdao University, Qingdao 266071, PR China
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6
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Ren G, Meng Q, Zhao J, Chu T. Zwitterions of the excited 4-([2,2′-bipyridine]-4-yl) phenol photoacid molecules: Formation and fluorescence. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.05.052] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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7
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Garand E. Spectroscopy of Reactive Complexes and Solvated Clusters: A Bottom-Up Approach Using Cryogenic Ion Traps. J Phys Chem A 2018; 122:6479-6490. [DOI: 10.1021/acs.jpca.8b05712] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Etienne Garand
- Department of Chemistry, University of Wisconsin—Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
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Verma S, Ghosh HN. Carrier relaxation dynamics in type-II ZnO/CdSe quantum dot heterostructures. Phys Chem Chem Phys 2017; 19:24896-24902. [PMID: 28869643 DOI: 10.1039/c7cp04069e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Semiconductor heterostructures with type-II band alignment are well known for their engineering property of efficient charge separation in photogenerated carriers. Herein, type-II CdSe/ZnO core/shell quantum dot heterostructures with CdSe shells of different thicknesses have been synthesized and a study of carrier dynamics is carried out using femtosecond transient absorption and picosecond emission spectroscopy. Carrier lifetime measurements by transient emission spectroscopy have revealed reduced electron-hole overlap in the type-II localization regime of ZnO/CdSe heterostructures. Femtosecond transient absorption studies have revealed hot electron transfer from CdSe shell to ZnO core prior to electron cooling in the CdSe shell. In addition, a surface channel for the hole cooling process has been identified in the transient absorption measurements. Effects of carrier trapping at interfacial defect states and type-II localization on carrier recombination have been recognized in our transient absorption and emission studies of ZnO/CdSe QDs heterostructure.
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Affiliation(s)
- Sandeep Verma
- Radiation and Photochemistry Division, Bhabha Atomic Research Centre, Mumbai, 400085, India.
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Duffy EM, Voss JM, Garand E. Vibrational Characterization of Microsolvated Electrocatalytic Water Oxidation Intermediate: [Ru(tpy)(bpy)(OH)]2+(H2O)0–4. J Phys Chem A 2017; 121:5468-5474. [DOI: 10.1021/acs.jpca.7b05255] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Erin M. Duffy
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Jonathan M. Voss
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Etienne Garand
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
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