1
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Chong D, Wang F. Dehydrogenation of Ammonia Borane Impacts Valence and Core Electrons: A Photoemission Spectroscopic Study. ACS OMEGA 2022; 7:35924-35932. [PMID: 36249405 PMCID: PMC9558250 DOI: 10.1021/acsomega.2c04632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Accepted: 08/24/2022] [Indexed: 06/16/2023]
Abstract
Ammonia borane (H3BNH3) is a promising material for hydrogen storage and release. Dehydrogenation of ammonia borane produces small boron-nitrogen hydrides such as aminoborane (H2BNH2) and iminoborane (HBNH). The present study investigates ammonia borane and its two dehydrogenated products for the first time using calculated photoemission spectra of the valence and core electrons. It is found that a significant decrease in the dipole moment was observed associated with the dehydration from 5.397 D in H3BNH3, to 1.942 D in H2BNH2, and to 0.083 D in HBNH. Such reduction in the dipole moment impacts properties such as hydrogen bonding, dihydrogen bonding, and their spectra. Dehydrogenation of H3BNH3 impacts both the valence and core electronic structure of the boron-nitrogen hydrides. The calculated valence vertical ionization energy (VIE) spectra of the boron-nitrogen hydrides show that valence orbitals dominated by 2p-electrons of B and N atoms exhibit large changes, whereas orbitals dominated by s-electrons, such as (3a14a15a1/3σ4σ5σ) remain less affected. The first ionization energy slightly increases from 10.57 eV for H3BNH3 to 11.29 eV for both unsaturated H2BNH2 and HBNH. In core space, the oxidative dehydrogenation of H3BNH3 affects the core electron binding energy (CEBE) of borane and nitrogen oppositely. The B1s binding energies increase from 194.01 eV in H3BNH3 to 196.93 eV in HBNH, up by 2.92 eV, whereas the N1s binding energies decrease from 408.20 eV in H3BNH3 to 404.88 eV in HBNH, dropped by 3.32 eV.
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Affiliation(s)
- Delano
P. Chong
- Department
of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - Feng Wang
- Department
of Chemistry and Biotechnology, School of Science, Computing and Engineering
Technologies, Swinburne University of Technology, Melbourne, Victoria 3122, Australia
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2
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Bolognesi P, Avaldi L. Photoelectron-photoion(s) coincidence studies of molecules of biological interest. Phys Chem Chem Phys 2022; 24:22356-22370. [PMID: 36124990 DOI: 10.1039/d2cp03079a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Photoelectron-photoion(s) coincidence, PEPICO, experiments with synchrotron radiation have become one of the most powerful tools to investigate dissociative photoionization thanks to their selectivity. In this paper their application to the study of molecular species of biological interest in the gas phase is reviewed. Some applications of PEPICO to the study of potential radiosensitizers, amino acids and small peptides and opportunities offered by the advent of novel methods for the production of beams of these molecules are discussed.
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Affiliation(s)
- P Bolognesi
- CNR-Istituto di Struttura della Materia, Area della Ricerca di Roma 1, CP 10 00015 Monterotondo Scalo, Italy.
| | - L Avaldi
- CNR-Istituto di Struttura della Materia, Area della Ricerca di Roma 1, CP 10 00015 Monterotondo Scalo, Italy.
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3
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Basalaev AA, Kuz’michev VV, Panov MN, Petrov AV, Smirnov OV. Interaction of evaporated glycine and dipeptide derivatives of glycine with He2+ ions. Radiat Phys Chem Oxf Engl 1993 2022. [DOI: 10.1016/j.radphyschem.2022.109984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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4
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Chiarinelli J, Barreiro-Lage D, Bolognesi P, RICHTER R, Zettergren H, Stockett MH, Díaz-Tendero S, Avaldi L. Electron and ion spectroscopy of the cyclo-alanine-alanine dipeptide. Phys Chem Chem Phys 2022; 24:5855-5867. [DOI: 10.1039/d1cp05811h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The VUV photoionisation and photofragmentation of cyclo-alanine-alanine (cAA) has been studiedin a joint experimental and theoretical work. The photoelectron spectrum and the photoelectron-photoion coincidence (PEPICO) measurements, which enable a control...
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5
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Molteni E, Mattioli G, Alippi P, Avaldi L, Bolognesi P, Carlini L, Vismarra F, Wu Y, Varillas RB, Nisoli M, Singh M, Valadan M, Altucci C, Richter R, Sangalli D. A systematic study of the valence electronic structure of cyclo(Gly-Phe), cyclo(Trp-Tyr) and cyclo(Trp-Trp) dipeptides in the gas phase. Phys Chem Chem Phys 2021; 23:26793-26805. [PMID: 34816853 DOI: 10.1039/d1cp04050b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The electronic energy levels of cyclo(glycine-phenylalanine), cyclo(tryptophan-tyrosine) and cyclo(tryptophan-tryptophan) dipeptides are investigated with a joint experimental and theoretical approach. Experimentally, valence photoelectron spectra in the gas phase are measured using VUV radiation. Theoretically, we first obtain low-energy conformers through an automated conformer-rotamer ensemble sampling scheme based on tight-binding simulations. Then, different first principles computational schemes are considered to simulate the spectra: Hartree-Fock (HF), density functional theory (DFT) within the B3LYP approximation, the quasi-particle GW correction, and the quantum-chemistry CCSD method. Theory allows assignment of the main features of the spectra. A discussion on the role of electronic correlation is provided, by comparing computationally cheaper DFT scheme (and GW) results with the accurate CCSD method.
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Affiliation(s)
- Elena Molteni
- Istituto di Struttura della Materia-CNR (ISM-CNR), Area della Ricerca di Roma 1, Via Salaria km 29.300, CP 10, Monterotondo Scalo, Roma, Italy. .,Dipartimento di Fisica, Universita' degli Studi di Milano, via Celoria 16, I-20133 Milano, Italy
| | - Giuseppe Mattioli
- Istituto di Struttura della Materia-CNR (ISM-CNR), Area della Ricerca di Roma 1, Via Salaria km 29.300, CP 10, Monterotondo Scalo, Roma, Italy.
| | - Paola Alippi
- Istituto di Struttura della Materia-CNR (ISM-CNR), Area della Ricerca di Roma 1, Via Salaria km 29.300, CP 10, Monterotondo Scalo, Roma, Italy.
| | - Lorenzo Avaldi
- Istituto di Struttura della Materia-CNR (ISM-CNR), Area della Ricerca di Roma 1, Via Salaria km 29.300, CP 10, Monterotondo Scalo, Roma, Italy.
| | - Paola Bolognesi
- Istituto di Struttura della Materia-CNR (ISM-CNR), Area della Ricerca di Roma 1, Via Salaria km 29.300, CP 10, Monterotondo Scalo, Roma, Italy.
| | - Laura Carlini
- Istituto di Struttura della Materia-CNR (ISM-CNR), Area della Ricerca di Roma 1, Via Salaria km 29.300, CP 10, Monterotondo Scalo, Roma, Italy.
| | - Federico Vismarra
- Dipartimento di Fisica, Politecnico di Milano, Piazza Leonardo da Vinci, 32, Milano, Italy.,CNR-Istituto di Fotonica e Nanotecnologie, Piazza Leonardo da Vinci, 32, Milano, Italy
| | - Yingxuan Wu
- Dipartimento di Fisica, Politecnico di Milano, Piazza Leonardo da Vinci, 32, Milano, Italy.,CNR-Istituto di Fotonica e Nanotecnologie, Piazza Leonardo da Vinci, 32, Milano, Italy
| | | | - Mauro Nisoli
- Dipartimento di Fisica, Politecnico di Milano, Piazza Leonardo da Vinci, 32, Milano, Italy.,CNR-Istituto di Fotonica e Nanotecnologie, Piazza Leonardo da Vinci, 32, Milano, Italy
| | - Manjot Singh
- Dipartimento di Scienze Biomediche Avanzate, Universita' degli Studi di Napoli Federico II, via Pansini 5, I-80131, Napoli, Italy
| | - Mohammadhassan Valadan
- Dipartimento di Scienze Biomediche Avanzate, Universita' degli Studi di Napoli Federico II, via Pansini 5, I-80131, Napoli, Italy.,Istituto Nazionale Fisica Nucleare (INFN), Sezione di Napoli, Napoli, Italy
| | - Carlo Altucci
- Dipartimento di Scienze Biomediche Avanzate, Universita' degli Studi di Napoli Federico II, via Pansini 5, I-80131, Napoli, Italy.,Istituto Nazionale Fisica Nucleare (INFN), Sezione di Napoli, Napoli, Italy
| | - Robert Richter
- Sincrotrone Trieste, Area Science Park, Basovizza, Trieste, Italy
| | - Davide Sangalli
- Istituto di Struttura della Materia-CNR (ISM-CNR), Area della Ricerca di Roma 1, Via Salaria km 29.300, CP 10, Monterotondo Scalo, Roma, Italy. .,Dipartimento di Fisica, Universita' degli Studi di Milano, via Celoria 16, I-20133 Milano, Italy
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6
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Guo Y, Nuermaimaiti A, Kjeldsen ND, Gothelf KV, Linderoth TR. Two-Dimensional Coordination Networks from Cyclic Dipeptides. J Am Chem Soc 2020; 142:19814-19818. [PMID: 33179492 DOI: 10.1021/jacs.0c08700] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Peptide-based biomimetic nanostructures and metal-organic coordination networks on surfaces are two promising classes of hybrid materials which have been explored recently. However, despite the great versatility and structural variability of natural and synthetic peptides, the two directions have so far not been merged in fabrication of metal-organic coordination networks using peptides as building blocks. Here we demonstrate that cyclic peptides can be used as ligands to form highly ordered, two-dimensional, peptide-based metal-organic coordination networks. The networks are formed on a Au(111) surface through coadsorption of cyclic dialanine with Cu-adatoms under Ultra-High Vacuum (UHV) conditions. Scanning Tunneling Microscopy (STM) in combination with X-ray Photoelectron spectroscopy (XPS) has been utilized to characterize the network structures at submolecular resolution and expound the chemical changes involved in network coordination. The networks involve a motif of three cyclic dialanine molecules coordinating to a central Cu-adatom. Interestingly the networks expose pores functionalized by the side chain of the cyclic peptide, suggesting a general method to form functionalized porous metal-organic networks on surfaces.
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Affiliation(s)
- Yuanyuan Guo
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, 8000 Aarhus C, Denmark
| | - Ajiguli Nuermaimaiti
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, 8000 Aarhus C, Denmark
| | - Niels Due Kjeldsen
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, 8000 Aarhus C, Denmark
| | - Kurt V Gothelf
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, 8000 Aarhus C, Denmark.,Department of Chemistry, Aarhus University, Langelandsgade 140, 8000 Aarhus C, Denmark
| | - Trolle R Linderoth
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, 8000 Aarhus C, Denmark.,Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, 8000 Aarhus C, Denmark
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7
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8
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Karachi S, Farrokhpour H, Abyar F. Ionization of the Conformers of cis
Nanotubular Cyclic Peptides in the Gas Phase: Effect of Size and Conformation on Ionization. J CHIN CHEM SOC-TAIP 2018. [DOI: 10.1002/jccs.201700179] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Sara Karachi
- Department of Chemistry; Isfahan University of Technology; Isfahan 84156-83111 Iran
| | - Hossein Farrokhpour
- Department of Chemistry; Isfahan University of Technology; Isfahan 84156-83111 Iran
| | - Fatemeh Abyar
- Chemical Engineering Department, Faculty of Engineering; Ardakan University; Ardakan Yazd 89518-95491 Iran
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9
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Schwob L, Lalande M, Rangama J, Egorov D, Hoekstra R, Pandey R, Eden S, Schlathölter T, Vizcaino V, Poully JC. Single-photon absorption of isolated collagen mimetic peptides and triple-helix models in the VUV-X energy range. Phys Chem Chem Phys 2017; 19:18321-18329. [DOI: 10.1039/c7cp02527k] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
By monitoring ionization and fragmentation after single-photon absorption, we show that an isolated collagen triple helix model is stabilized by proline hydroxylation.
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Affiliation(s)
- Lucas Schwob
- CIMAP
- UMR 6252 (CEA/CNRS/ENSICAEN/Université de Caen Normandie)
- Caen
- France
| | - Mathieu Lalande
- CIMAP
- UMR 6252 (CEA/CNRS/ENSICAEN/Université de Caen Normandie)
- Caen
- France
| | - Jimmy Rangama
- CIMAP
- UMR 6252 (CEA/CNRS/ENSICAEN/Université de Caen Normandie)
- Caen
- France
| | - Dmitrii Egorov
- Zernike Institute for Advanced Materials
- University of Groningen
- Nijenborgh 4
- 9747AG Groningen
- The Netherlands
| | - Ronnie Hoekstra
- Zernike Institute for Advanced Materials
- University of Groningen
- Nijenborgh 4
- 9747AG Groningen
- The Netherlands
| | - Rahul Pandey
- Dept. of Physical Sciences
- The Open University
- Walton Hall
- Milton Keynes
- UK
| | - Samuel Eden
- Dept. of Physical Sciences
- The Open University
- Walton Hall
- Milton Keynes
- UK
| | - Thomas Schlathölter
- Zernike Institute for Advanced Materials
- University of Groningen
- Nijenborgh 4
- 9747AG Groningen
- The Netherlands
| | - Violaine Vizcaino
- CIMAP
- UMR 6252 (CEA/CNRS/ENSICAEN/Université de Caen Normandie)
- Caen
- France
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10
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Wickrama Arachchilage AP, Wang F, Feyer V, Plekan O, Acres RG, Prince KC. X-ray Photoemission Spectra and Electronic Structure of Coumarin and its Derivatives. J Phys Chem A 2016; 120:7080-7. [DOI: 10.1021/acs.jpca.6b04914] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Anoja P. Wickrama Arachchilage
- Molecular
Model Discovery Laboratory, Department of Chemistry and Biotechnology,
Faculty of Sciences, Engineering and Technology, Swinburne University of Technology, Hawthorn, Melbourne, Victoria 3122, Australia
| | - Feng Wang
- Molecular
Model Discovery Laboratory, Department of Chemistry and Biotechnology,
Faculty of Sciences, Engineering and Technology, Swinburne University of Technology, Hawthorn, Melbourne, Victoria 3122, Australia
| | - Vitaliy Feyer
- Elettra-Sincrotrone Trieste, Area Science
Park, I-34149 Basovizza,
Trieste, Italy
| | - Oksana Plekan
- Elettra-Sincrotrone Trieste, Area Science
Park, I-34149 Basovizza,
Trieste, Italy
| | - Robert G. Acres
- Elettra-Sincrotrone Trieste, Area Science
Park, I-34149 Basovizza,
Trieste, Italy
| | - Kevin C. Prince
- Molecular
Model Discovery Laboratory, Department of Chemistry and Biotechnology,
Faculty of Sciences, Engineering and Technology, Swinburne University of Technology, Hawthorn, Melbourne, Victoria 3122, Australia
- Elettra-Sincrotrone Trieste, Area Science
Park, I-34149 Basovizza,
Trieste, Italy
- Istituto
Officina dei Materiali, Consiglio Nazionale delle Ricerche, Area
Science Park, I-34149 Trieste, Italy
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11
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Feketeová L, Plekan O, Goonewardane M, Ahmed M, Albright AL, White J, O’Hair RAJ, Horsman MR, Wang F, Prince KC. Photoelectron Spectra and Electronic Structures of the Radiosensitizer Nimorazole and Related Compounds. J Phys Chem A 2015; 119:9986-95. [DOI: 10.1021/acs.jpca.5b05950] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Linda Feketeová
- School
of Chemistry and Bio21 Institute of Molecular Science and Biotechnology, The University of Melbourne, 30 Flemington Road, 3010 Parkville, Victoria, Australia
- ARC Centre of Excellence for Free Radical Chemistry and Biotechnology, Parkville, Victoria 3010, Australia
- Institut
de Physique Nucléaire de Lyon, Université Claude Bernard
Lyon1, Université de Lyon, CNRS/IN2P3 UMR 5822, 43 Bd du 11
novembre 1918, 69622 Villeurbanne Cedex, France
| | - Oksana Plekan
- Elettra-Sincrotrone Trieste, in Area Science
Park, 34149 Basovizza,
Trieste, Italy
| | - Mayanthi Goonewardane
- Molecular
Model Discovery Laboratory, Department of Chemistry and Biotechnology,
Faculty of Science, Engineering and Technology, Swinburne University of Technology, 3122 Hawthorn, Victoria, Australia
| | - Marawan Ahmed
- Molecular
Model Discovery Laboratory, Department of Chemistry and Biotechnology,
Faculty of Science, Engineering and Technology, Swinburne University of Technology, 3122 Hawthorn, Victoria, Australia
| | - Abigail L. Albright
- School
of Chemistry and Bio21 Institute of Molecular Science and Biotechnology, The University of Melbourne, 30 Flemington Road, 3010 Parkville, Victoria, Australia
| | - Jonathan White
- School
of Chemistry and Bio21 Institute of Molecular Science and Biotechnology, The University of Melbourne, 30 Flemington Road, 3010 Parkville, Victoria, Australia
| | - Richard A. J. O’Hair
- School
of Chemistry and Bio21 Institute of Molecular Science and Biotechnology, The University of Melbourne, 30 Flemington Road, 3010 Parkville, Victoria, Australia
- ARC Centre of Excellence for Free Radical Chemistry and Biotechnology, Parkville, Victoria 3010, Australia
| | - Michael R. Horsman
- Department
of Experimental Clinical Oncology, Aarhus University Hospital, Nørrebrogade 44, 8000 Aarhus C, Denmark
| | - Feng Wang
- Molecular
Model Discovery Laboratory, Department of Chemistry and Biotechnology,
Faculty of Science, Engineering and Technology, Swinburne University of Technology, 3122 Hawthorn, Victoria, Australia
| | - Kevin C. Prince
- Elettra-Sincrotrone Trieste, in Area Science
Park, 34149 Basovizza,
Trieste, Italy
- Molecular
Model Discovery Laboratory, Department of Chemistry and Biotechnology,
Faculty of Science, Engineering and Technology, Swinburne University of Technology, 3122 Hawthorn, Victoria, Australia
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12
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Wang F, Ahmed M. Sitting above the maze: recent model discoveries in molecular science. MOLECULAR SIMULATION 2014. [DOI: 10.1080/08927022.2014.923570] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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13
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Ahmed M, Wang F, Acres RG, Prince KC. Structures of cycloserine and 2-oxazolidinone probed by X-ray photoelectron spectroscopy: theory and experiment. J Phys Chem A 2014; 118:3645-54. [PMID: 24821292 DOI: 10.1021/jp500308j] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The electronic structures and properties of 2-oxazolidinone and the related compound cycloserine (CS) have been investigated using theoretical calculations and core and valence photoelectron spectroscopy. Isomerization of the central oxazolidine heterocycle and the addition of an amino group yield cycloserine. Theory correctly predicts the C, N, and O 1s core spectra, and additionally, we report theoretical natural bond orbital (NBO) charges. The valence ionization energies are also in agreement with theory and previous measurements. Although the lowest binding energy part of the spectra of the two compounds shows superficial similarities, further analysis of the charge densities of the frontier orbitals indicates substantial reorganization of the wave functions as a result of isomerization. The highest occupied molecular orbital (HOMO) of CS shows leading carbonyl π character with contributions from other heavy (non-H) atoms in the molecule, while the HOMO of 2-oxazolidinone (OX2) has leading nitrogen, carbon, and oxygen pπ characters. The present study further theoretically predicts bond resonance effects of the compounds, evidence for which is provided by our experimental measurements and published crystallographic data.
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Affiliation(s)
- Marawan Ahmed
- eChemistry Laboratory, Department of Chemistry and Biotechnology, School of Science, Faculty of Science, Engineering and Technology, Swinburne University of Technology , Melbourne, Victoria 3122, Australia
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14
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Plekan O, Feyer V, Ptasińska S, Tsud N, Prince KC. Cyclic dipeptide immobilization on Au(111) and Cu(110) surfaces. Phys Chem Chem Phys 2014; 16:6657-65. [PMID: 24584969 DOI: 10.1039/c3cp55371j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Soft X-ray Photoelectron Spectroscopy (XPS) and Near Edge X-ray Absorption Fine Structure (NEXAFS) spectroscopy have been used to probe the electronic and adsorption properties of two cyclic dipeptides, i.e. cyclo(glycyl-histidyl) and cyclo(phenylalanyl-prolyl), on Au(111) and Cu(110) surfaces. The core level spectra show chemical shifts which indicate weak chemisorption on Au(111), and stronger chemisorption on the Cu(110) surface, mainly via one of the nitrogen atoms in the central rings of both molecules, and nitrogen in the imidazole ring of cyclo(glycyl-histidyl). From the angular dependence of the NEXAFS spectra at the O and N K-edges, we conclude that both dipeptides have a preferred orientation on the two surfaces.
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Affiliation(s)
- Oksana Plekan
- Sincrotrone Trieste S.C.p.A., in Area Science Park, Strada Statale 14, km 163.5, I-34149 Basovizza, Trieste, Italy.
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15
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Wang F, Ganesan A. Fragment based electronic structural analysis of l-phenylalanine using calculated ionization spectroscopy and dual space analysis. RSC Adv 2014. [DOI: 10.1039/c4ra09146a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Fragmentation schemes in phenylalanine revealed using ionization spectroscopy and dual space analysis.
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Affiliation(s)
- Feng Wang
- Molecular Model Discovery Laboratory
- Department of Chemistry and Biotechnology
- Faculty of Sciences
- Engineering and Technology
- Swinburne University of Technology
| | - Aravindhan Ganesan
- Molecular Model Discovery Laboratory
- Department of Chemistry and Biotechnology
- Faculty of Sciences
- Engineering and Technology
- Swinburne University of Technology
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16
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Yang Z, Wang F. Differentiation of alkane isomers through binding energy spectra and total momentum cross sections. NEW J CHEM 2014. [DOI: 10.1039/c3nj01438j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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González-Magaña O, Reitsma G, Tiemens M, Boschman L, Hoekstra R, Schlathölter T. Near-Edge X-ray Absorption Mass Spectrometry of a Gas-Phase Peptide. J Phys Chem A 2012; 116:10745-51. [DOI: 10.1021/jp307527b] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- O. González-Magaña
- KVI Atomic and Molecular Physics, University of Groningen, Zernikelaan 25, 9747AA Groningen,
The Netherlands
| | - G. Reitsma
- KVI Atomic and Molecular Physics, University of Groningen, Zernikelaan 25, 9747AA Groningen,
The Netherlands
| | - M. Tiemens
- KVI Atomic and Molecular Physics, University of Groningen, Zernikelaan 25, 9747AA Groningen,
The Netherlands
| | - L. Boschman
- KVI Atomic and Molecular Physics, University of Groningen, Zernikelaan 25, 9747AA Groningen,
The Netherlands
- Kapteyn
Astronomical Institute, University of Groningen, Landleven 12, 9747AD Groningen,
The Netherlands
| | - R. Hoekstra
- KVI Atomic and Molecular Physics, University of Groningen, Zernikelaan 25, 9747AA Groningen,
The Netherlands
| | - T. Schlathölter
- KVI Atomic and Molecular Physics, University of Groningen, Zernikelaan 25, 9747AA Groningen,
The Netherlands
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18
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Wickrama Arachchilage AP, Wang F, Feyer V, Plekan O, Prince KC. Photoelectron spectra and structures of three cyclic dipeptides: PhePhe, TyrPro, and HisGly. J Chem Phys 2012; 136:124301. [PMID: 22462851 DOI: 10.1063/1.3693763] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
We have investigated the electronic structure of three cyclic dipeptides: cyclo(Histidyl-Glycyl) (cHisGly), cyclo(Tyrosyl-Prolyl) (cTyrPro), and cyclo(Phenylalanyl-Phenylalanyl) (cPhePhe) in the vapor phase, by means of photoemission spectroscopy and theoretical modeling. The last compound was evaporated from the solid linear dipeptide, but cyclised, losing water to form cPhePhe in the gas phase. The results are compared with our previous studies of three other cyclopeptides. Experimental valence and core level spectra have been interpreted in the light of calculations to identify the basic chemical properties associated with the central diketopiperazine ring, and with the additional functional groups. The valence spectra are generally characterized by a restricted set of outer valence orbitals separated by a gap from most other valence orbitals. The theoretically simulated core and valence spectra of all three cyclic dipeptides agree reasonably well with the experimental spectra. The central ring and the side chains act as independent chromophores whose spectra do not influence one another, except for prolyl dipeptides, where the pyrrole ring is fused with the central ring. In this case, significant changes in the valence and core level spectra were observed, and explained by stronger hybridization of the valence orbitals.
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Affiliation(s)
- Anoja P Wickrama Arachchilage
- eChemistry Laboratory, Faculty of Life and Social Sciences, Swinburne University of Technology, Hawthorn, Melbourne, Victoria 3122, Australia
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Ahmed M, Ganesan A, Wang F, Feyer V, Plekan O, Prince KC. Photoelectron Spectra of Some Antibiotic Building Blocks: 2-Azetidinone and Thiazolidine-Carboxylic Acid. J Phys Chem A 2012; 116:8653-60. [DOI: 10.1021/jp302950y] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Marawan Ahmed
- eChemistry Laboratory, Faculty
of Life and Social Sciences, Swinburne University of Technology, Melbourne, Victoria 3122, Australia
| | - Aravindhan Ganesan
- eChemistry Laboratory, Faculty
of Life and Social Sciences, Swinburne University of Technology, Melbourne, Victoria 3122, Australia
| | - Feng Wang
- eChemistry Laboratory, Faculty
of Life and Social Sciences, Swinburne University of Technology, Melbourne, Victoria 3122, Australia
| | - Vitaliy Feyer
- Sincrotrone Trieste, Area Science Park, I-34149 Basovizza, Trieste, Italy
| | - Oksana Plekan
- Sincrotrone Trieste, Area Science Park, I-34149 Basovizza, Trieste, Italy
| | - Kevin C. Prince
- Sincrotrone Trieste, Area Science Park, I-34149 Basovizza, Trieste, Italy
- Istituto Officina dei Materiali, Consiglio Nazionale delle Ricerche, Area Science Park,
I-34149 Trieste, Italy
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A quantum mechanical study of bioactive 3-chloro-2,5-dihydroxybenzyl alcohol through substitutions. Theor Chem Acc 2011. [DOI: 10.1007/s00214-011-1040-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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