1
|
Kitajima K, Nakai Y, Tsuge M, Watanabe N. Signature of Proton-Hole Transfer in Hydrogen-Bonded Solids at 10 K. J Phys Chem Lett 2024; 15:11701-11708. [PMID: 39546345 DOI: 10.1021/acs.jpclett.4c02812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2024]
Abstract
Although proton transport in water ice is well understood, proton-hole transfer (PHT) involving proton abstraction by anions remains less explored. This study investigates PHT in H2S and NH3 solids at low temperatures, aiming to determine whether these solids exhibit negative charge transport similar to that in ice. In H2S and NH3 solids at 10 K, surface HS- and NH2- anions in hydrogen-bonded systems trigger negative current flow, providing a clear signature of PHT. This negative current is controlled by electron flow and 193 nm ultraviolet irradiation, which generates HS- and NH2- anions on the solid surfaces. In bilayer H2S/H2O and NH3/H2O solids, a significant negative current is observed only in the NH3/H2O solid, which is attributed to the exothermic proton abstraction by NH2- from H2O at the bilayer interface, a process not available for H2S on ice. This study is the first to demonstrate PHT-induced electrochemical behavior in hydrogen-bonded solids other than ice.
Collapse
Affiliation(s)
- Kensei Kitajima
- Institute of Low Temperature Science, Hokkaido University, Sapporo 060-0819, Japan
| | - Yoichi Nakai
- Institute of Low Temperature Science, Hokkaido University, Sapporo 060-0819, Japan
- RIKEN Nishina Center for Accelerator-based Science, Wako 351-0198, Japan
| | - Masashi Tsuge
- Institute of Low Temperature Science, Hokkaido University, Sapporo 060-0819, Japan
| | - Naoki Watanabe
- Institute of Low Temperature Science, Hokkaido University, Sapporo 060-0819, Japan
| |
Collapse
|
2
|
Munaò G, Saija F, Cassone G. The structure of water-ammonia mixtures from classical and ab initio molecular dynamics. J Chem Phys 2024; 161:094503. [PMID: 39230374 DOI: 10.1063/5.0220328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2024] [Accepted: 08/21/2024] [Indexed: 09/05/2024] Open
Abstract
The structure of aqueous ammonia solutions is investigated through classical molecular dynamics (MD) and ab initio molecular dynamics (AIMD) simulations. We have preliminarily compared three well-known classical force fields for liquid water (SPC, SPC/E, and TIP4P) in order to identify the most accurate one in reproducing AIMD results obtained at the Generalized Gradient Approximation (GGA) and meta-GGA levels of theory. Liquid ammonia has been simulated by implementing an optimized force field recently developed by Chettiyankandy et al. [Fluid Phase Equilib. 511, 112507 (2020)]. Analysis of the radial distribution functions for different ammonia concentrations reveals that the three water force fields provide comparable estimates of the mixture structure, with the SPC/E performing slightly better. Although a fairly good agreement between MD and AIMD is observed for conditions close to the equimolarity, at lower ammonia concentrations, important discrepancies arise, with classical force fields underestimating the number and strength of H-bonds between water molecules and between water and ammonia moieties. Here, we prove that these drawbacks are rooted in a poor sampling of the configurational space spanned by the hydrogen atoms lying in the H-bonds of H2O⋯H2O and, more critically, H2O⋯NH3 neighbors due to the lack of polarization and charge transfer terms. This way, non-polarizable classical force fields underestimate the proton affinity of the nitrogen atom of ammonia in aqueous solutions, which plays a key role under realistic dilute ammonia conditions. Our results witness the need for developing more suited polarizable models that are able to take into account these effects properly.
Collapse
Affiliation(s)
- Gianmarco Munaò
- Department of Mathematical and Computer Sciences, Physical Sciences and Earth Sciences, University of Messina, 98166 Messina, Italy
| | - Franz Saija
- Institute for Chemical-Physical Processes, National Research Council of Italy (IPCF-CNR), 98158 Messina, Italy
| | - Giuseppe Cassone
- Institute for Chemical-Physical Processes, National Research Council of Italy (IPCF-CNR), 98158 Messina, Italy
| |
Collapse
|
3
|
Marks J, Wang J, Sun BJ, McAnally M, Turner AM, Chang AHH, Kaiser RI. Thermal Synthesis of Carbamic Acid and Its Dimer in Interstellar Ices: A Reservoir of Interstellar Amino Acids. ACS CENTRAL SCIENCE 2023; 9:2241-2250. [PMID: 38161363 PMCID: PMC10755733 DOI: 10.1021/acscentsci.3c01108] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 10/13/2023] [Accepted: 10/19/2023] [Indexed: 01/03/2024]
Abstract
Reactions in interstellar ices are shown to be capable of producing key prebiotic molecules without energetic radiation that are necessary for the origins of life. When present in interstellar ices, carbamic acid (H2NCOOH) can serve as a condensed-phase source of the molecular building blocks for more complex proteinogenic amino acids. Here, Fourier transform infrared spectroscopy during heating of analogue interstellar ices composed of carbon dioxide and ammonia identifies the lower limit for thermal synthesis to be 62 ± 3 K for carbamic acid and 39 ± 4 K for its salt ammonium carbamate ([H2NCOO-][NH4+]). While solvation increases the rates of formation and decomposition of carbamic acid in ice, the absence of solvent effects after sublimation results in a significant barrier to dissociation and a stable gas-phase molecule. Photoionization reflectron time-of-flight mass spectrometry permits an unprecedented degree of sensitivity toward gaseous carbamic acid and demonstrates sublimation of carbamic acid from decomposition of ammonium carbamate and again at higher temperatures from carbamic acid dimers. Since the dimer is observed at temperatures up to 290 K, similar to the environment of a protoplanetary disk, this dimer is a promising reservoir of amino acids during the formation of stars and planets.
Collapse
Affiliation(s)
- Joshua
H. Marks
- W.
M. Keck Research Laboratory in Astrochemistry, University of Hawai’i at Manoa, Honolulu, Hawaii 96822, United States
- Department
of Chemistry, University of Hawai’i
at Manoa, Honolulu, Hawaii 96822, United States
| | - Jia Wang
- W.
M. Keck Research Laboratory in Astrochemistry, University of Hawai’i at Manoa, Honolulu, Hawaii 96822, United States
- Department
of Chemistry, University of Hawai’i
at Manoa, Honolulu, Hawaii 96822, United States
| | - Bing-Jian Sun
- Department
of Chemistry, National Dong Hwa University, Hualien 974, Taiwan
| | - Mason McAnally
- W.
M. Keck Research Laboratory in Astrochemistry, University of Hawai’i at Manoa, Honolulu, Hawaii 96822, United States
- Department
of Chemistry, University of Hawai’i
at Manoa, Honolulu, Hawaii 96822, United States
| | - Andrew M. Turner
- W.
M. Keck Research Laboratory in Astrochemistry, University of Hawai’i at Manoa, Honolulu, Hawaii 96822, United States
- Department
of Chemistry, University of Hawai’i
at Manoa, Honolulu, Hawaii 96822, United States
| | - Agnes H.-H. Chang
- Department
of Chemistry, National Dong Hwa University, Hualien 974, Taiwan
| | - Ralf I. Kaiser
- W.
M. Keck Research Laboratory in Astrochemistry, University of Hawai’i at Manoa, Honolulu, Hawaii 96822, United States
- Department
of Chemistry, University of Hawai’i
at Manoa, Honolulu, Hawaii 96822, United States
| |
Collapse
|
4
|
Cassone G, Sponer J, Sponer JE, Saija F. Electrofreezing of Liquid Ammonia. J Phys Chem Lett 2022; 13:9889-9894. [PMID: 36255376 PMCID: PMC9619927 DOI: 10.1021/acs.jpclett.2c02576] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Accepted: 10/13/2022] [Indexed: 05/25/2023]
Abstract
Here we prove that, in addition to temperature and pressure, another important thermodynamic variable permits the exploration of the phase diagram of ammonia: the electric field. By means of (path integral) ab initio molecular dynamics simulations, we predict that, upon applying intense electric fields on ammonia, the electrofreezing phenomenon occurs, leading the liquid toward a novel ferroelectric solid phase. This study proves that electric fields can generally be exploited as the access key to otherwise-unreachable regions in phase diagrams, unveiling the existence of new condensed-phase structures. Furthermore, the reported findings have manifold practical implications, from the safe storage and transportation of ammonia to the understanding of the solid structures this compound forms in planetary contexts.
Collapse
Affiliation(s)
- Giuseppe Cassone
- Institute
for Chemical-Physical Processes, National
Research Council of Italy, Viale F. Stagno d’Alcontres 37, 98158 Messina, Italy
| | - Jiri Sponer
- Institute
of Biophysics of the Czech Academy of Sciences, Královopolská 135, 61265 Brno, Czechia
- Regional
Center of Advanced Technologies and Materials, The Czech Advanced
Technology and Research Institute (CATRIN), Palacky University Olomouc, Slechtitelu 27, 77900 Olomouc, Czechia
| | - Judit E. Sponer
- Institute
of Biophysics of the Czech Academy of Sciences, Královopolská 135, 61265 Brno, Czechia
| | - Franz Saija
- Institute
for Chemical-Physical Processes, National
Research Council of Italy, Viale F. Stagno d’Alcontres 37, 98158 Messina, Italy
| |
Collapse
|
5
|
Cassidy A, James RL, Dawes A, Field D. The rise of an exciton in solid ammonia. Chem Commun (Camb) 2021; 58:815-818. [PMID: 34928278 DOI: 10.1039/d1cc05520h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We trace a polymorphic phase change in solid ammonia films through the emergence of a Frenkel exciton at 194.4 nm, for deposition temperatures of 48 K, 50 K and 52 K. Observations on a timescale of hours give unparalleled access to the individual processes of nucleation and the phase change itself. The excitonic transition is forbidden in the low temperature phase, but greater flexing of the solid state structure in the higher temperature phase makes the transition allowed, as the nano-crystals approach ∼30 unit cells through nucleation. We find activation energies of 21.7 ± 0.6 kJ mol-1 for nucleation and 22.8 ± 0.6 kJ mol-1 for the phase change, corresponding to the breaking of two to three hydrogen bonds.
Collapse
Affiliation(s)
- Andrew Cassidy
- Center for Interstellar Catalysis and Department of Physics and Astronomy, Aarhus University, Denmark.
| | - Rachel L James
- Department of Earth and Environmental Sciences, University of Manchester, UK
| | - Anita Dawes
- School of Physical Sciences, The Open University, UK.
| | - David Field
- Department of Physics and Astronomy, Aarhus University, Denmark
| |
Collapse
|
6
|
Singh SK, Bergantini A, Zhu C, Ferrari M, De Sanctis MC, De Angelis S, Kaiser RI. Origin of ammoniated phyllosilicates on dwarf planet Ceres and asteroids. Nat Commun 2021; 12:2690. [PMID: 33976207 PMCID: PMC8113531 DOI: 10.1038/s41467-021-23011-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Accepted: 03/23/2021] [Indexed: 11/17/2022] Open
Abstract
The surface mineralogy of dwarf planet Ceres is rich in ammonium (NH4+) bearing phyllosilicates. However, the origin and formation mechanisms of ammoniated phyllosilicates on Ceres’s surface are still elusive. Here we report on laboratory simulation experiments under astrophysical conditions mimicking Ceres’ physical and chemical environments with the goal to better understand the source of ammoniated minerals on Ceres’ surface. We observe that thermally driven proton exchange reactions between phyllosilicates and ammonia (NH3) could trigger at low temperature leading to the genesis of ammoniated-minerals. Our study revealed the thermal (300 K) and radiation stability of ammoniated-phyllosilicates over a timescale of at least some 500 million years. The present experimental investigations corroborate the possibility that Ceres formed at a location where ammonia ices on the surface would have been stable. However, the possibility of Ceres’ origin near to its current location by accreting ammonia-rich material cannot be excluded. The authors here propose a chemical reaction that forms ammoniated phyllosilicates on Ceres. This process could trigger at a very low temperature, suggesting Ceres evolution in a region different from its current location.
Collapse
Affiliation(s)
- Santosh K Singh
- Department of Chemistry, University of Hawaii, Honolulu, HI, USA.,W. M. Keck Research Laboratory in Astrochemistry, University of Hawaii, Honolulu, HI, USA
| | - Alexandre Bergantini
- Department of Chemistry, University of Hawaii, Honolulu, HI, USA.,W. M. Keck Research Laboratory in Astrochemistry, University of Hawaii, Honolulu, HI, USA.,Federal Center for Technological Education Celso Suckow da Fonseca, Rio de Janeiro, Brazil
| | - Cheng Zhu
- Department of Chemistry, University of Hawaii, Honolulu, HI, USA.,W. M. Keck Research Laboratory in Astrochemistry, University of Hawaii, Honolulu, HI, USA
| | - Marco Ferrari
- Istituto di Astrofisica e Planetologia Spaziali, INAF, Roma, Italy
| | | | | | - Ralf I Kaiser
- Department of Chemistry, University of Hawaii, Honolulu, HI, USA. .,W. M. Keck Research Laboratory in Astrochemistry, University of Hawaii, Honolulu, HI, USA.
| |
Collapse
|
7
|
James RL, Ioppolo S, Hoffmann SV, Jones NC, Mason NJ, Dawes A. Systematic investigation of CO 2 : NH 3 ice mixtures using mid-IR and VUV spectroscopy - part 1: thermal processing. RSC Adv 2020; 10:37515-37528. [PMID: 35521284 PMCID: PMC9057146 DOI: 10.1039/d0ra05826b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Accepted: 09/25/2020] [Indexed: 12/24/2022] Open
Abstract
The adjustment of experimental parameters in interstellar ice analogues can have profound effects on molecular synthesis within an ice system. We demonstrated this by systematically investigating the stoichiometric mixing ratios of CO2 : NH3 ices as a function of thermal processing using mid-IR and VUV spectroscopy. We observed that the type of CO2 bonding environment was dependent on the different stoichiometric mixing ratios and that this pre-determined the NH3 crystallite structure after phase change. The thermal reactivity of the ices was linked to the different chemical and physical properties of the stoichiometric ratios. Our results provide new details into the chemical and physical properties of the different stoichiometric CO2 : NH3 ices enhancing our understanding of the thermally induced molecular synthesis within this ice system.
Collapse
Affiliation(s)
- Rachel L James
- School of Physical Sciences, The Open University Walton Hall Milton Keynes UK +44 (0)1908 654192 +44 (0)1908 332012
| | - Sergio Ioppolo
- School of Electronic Engineering and Computer Science, Queen Mary University of London Mile End Road London UK
| | - Søren V Hoffmann
- ISA, Department of Physics and Astronomy, Aarhus University Ny Munkegade 120 DK-8000 Aarhus C Denmark
| | - Nykola C Jones
- ISA, Department of Physics and Astronomy, Aarhus University Ny Munkegade 120 DK-8000 Aarhus C Denmark
| | - Nigel J Mason
- School of Physical Sciences, University of Kent Canterbury Kent UK
| | - Anita Dawes
- School of Physical Sciences, The Open University Walton Hall Milton Keynes UK +44 (0)1908 654192 +44 (0)1908 332012
| |
Collapse
|
8
|
Cassidy A, James RL, Dawes A, Field D. Crystallites and Electric Fields in Solid Ammonia. ChemistryOpen 2020; 9:983-990. [PMID: 33024652 PMCID: PMC7528761 DOI: 10.1002/open.202000118] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 06/03/2020] [Indexed: 11/12/2022] Open
Abstract
Absorption spectra of vacuum-deposited films of ammonia have been obtained in the range 115 nm to 310 nm for a set of 15 deposition temperatures, Td, between 20 K and 80 K. Results focus upon the region 115 nm to 130 nm in overlapping D, E, F and G←X Rydberg transitions involving Wannier-Mott excitons. We identify two phases of ammonia, showing the solid to be polymorphic. Peak absorption wavelengths in the region of interest are found to shift to the red by 299 cm-1, for Td between 20 K to 50 K, and 1380 cm-1 for Td between 55 K to 80 K. Shifts provide evidence for the presence of spontaneously generated electric fields in these films, of values in excess of 108 V m-1 for Td of 20 K to 50 K to a few times 107 V m-1 for 55 K to 80 K. Results enable us to place a lower limit of 1.58 nm on the size of crystallites in the low temperature regime. This dimension represents 16 unit cells or 64 species, giving a more quantitative description than the nebulous term amorphous, as applied to solid ammonia. We also determine that crystallites formed in the high temperature regime contain, within ±20 %, 1688, 756 and 236 molecules of ammonia, respectively at Td of 65 K, 60 K and 55 K.
Collapse
Affiliation(s)
- Andrew Cassidy
- Department of Physics and AstronomyAarhus UniversityNy Munkegade 1208000AarhusDenmark
| | - Rachel L. James
- School of Physical SciencesThe Open UniversityWalton HallMilton KeynesMK7 6AAUK
| | - Anita Dawes
- School of Physical SciencesThe Open UniversityWalton HallMilton KeynesMK7 6AAUK
| | - David Field
- Department of Physics and AstronomyAarhus UniversityNy Munkegade 1208000AarhusDenmark
| |
Collapse
|
9
|
Sagi R, Akerman M, Ramakrishnan S, Asscher M. Spontaneous polarization of thick solid ammonia films. J Chem Phys 2020; 153:124707. [DOI: 10.1063/5.0017853] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- Roey Sagi
- Institute of Chemistry, Edmond J. Safra Campus, Givat-Ram, The Hebrew University of Jerusalem, Jerusalem 9190401, Israel
| | - Michelle Akerman
- Institute of Chemistry, Edmond J. Safra Campus, Givat-Ram, The Hebrew University of Jerusalem, Jerusalem 9190401, Israel
| | - Sujith Ramakrishnan
- Institute of Chemistry, Edmond J. Safra Campus, Givat-Ram, The Hebrew University of Jerusalem, Jerusalem 9190401, Israel
| | - Micha Asscher
- Institute of Chemistry, Edmond J. Safra Campus, Givat-Ram, The Hebrew University of Jerusalem, Jerusalem 9190401, Israel
| |
Collapse
|
10
|
Ninomiya M, Doi H, Matsumoto Y, Mochizuki Y, Komeiji Y. Ab Initio Fragment Molecular Orbital-Based Molecular Dynamics (FMO-MD) Simulations of (NH 3) 32 Cluster: Effects of Electron Correlation. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2020. [DOI: 10.1246/bcsj.20190320] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Moeko Ninomiya
- Department of Chemistry and Research Center for Smart Molecules, Faculty of Science, Rikkyo University, 3-34-1 Nishi-ikebukuro, Toshima-ku, Tokyo 171-8501, Japan
| | - Hideo Doi
- Department of Chemistry and Research Center for Smart Molecules, Faculty of Science, Rikkyo University, 3-34-1 Nishi-ikebukuro, Toshima-ku, Tokyo 171-8501, Japan
- Research Center for Computational Design of Advanced Functional Materials (CD-FMat), National Institute of Advanced Industrial Science and Technology, AIST, Tsukuba Central 2, Tsukuba, Ibaraki 305-8568, Japan
| | - Yoshiteru Matsumoto
- Department of Chemistry, Faculty of Science, Shizuoka University, 836 Ohya, Suruga, Shizuoka 422-8529, Japan
| | - Yuji Mochizuki
- Department of Chemistry and Research Center for Smart Molecules, Faculty of Science, Rikkyo University, 3-34-1 Nishi-ikebukuro, Toshima-ku, Tokyo 171-8501, Japan
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan
| | - Yuto Komeiji
- Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology, AIST, Tsukuba Central 6, Tsukuba, Ibaraki 305-8566, Japan
| |
Collapse
|
11
|
Davis D, Kundu S, Prabhudesai VS, Sajeev Y, Krishnakumar E. Formation of CO2 from formic acid through catalytic electron channel. J Chem Phys 2018; 149:064308. [DOI: 10.1063/1.5032172] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Affiliation(s)
- Daly Davis
- Department of Nuclear and Atomic Physics, Tata Institute of Fundamental Research, Mumbai 400005, India
| | - Sramana Kundu
- Department of Nuclear and Atomic Physics, Tata Institute of Fundamental Research, Mumbai 400005, India
| | - Vaibhav S. Prabhudesai
- Department of Nuclear and Atomic Physics, Tata Institute of Fundamental Research, Mumbai 400005, India
| | - Y. Sajeev
- Theoretical Chemistry, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - E. Krishnakumar
- Department of Nuclear and Atomic Physics, Tata Institute of Fundamental Research, Mumbai 400005, India
| |
Collapse
|
12
|
Ghosh J, Hariharan AK, Bhuin RG, Methikkalam RRJ, Pradeep T. Propane and propane-water interactions: a study at cryogenic temperatures. Phys Chem Chem Phys 2018; 20:1838-1847. [PMID: 29292468 DOI: 10.1039/c7cp06467e] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The phase transition of solid propane and a propane-water mixture under ultrahigh vacuum has been investigated using reflection absorption infrared spectroscopy (RAIRS) and temperature-programmed desorption mass spectrometry (TPD-MS). Here, the investigation is divided into two sections: the phase transition of pure propane and the interaction of propane with water. RAIR spectra of pure propane reveal an unknown crystalline phase at 50 K (phase I), which gradually converts to a known crystalline phase (phase II) at higher temperature. This conversion is associated with certain kinetics. Co-deposition of water and propane restricts the amorphous to crystalline phase transition, while sequential deposition (H2O@C3H8; propane over predeposited water) does not hinder it. For an alternative sequential deposition (C3H8@H2O; water over predeposited propane), the phase transition is hindered due to diffusional mixing within the given experimental time, which is attributed to the reason behind the restricted phase transition.
Collapse
Affiliation(s)
- Jyotirmoy Ghosh
- DST Unit of Nanoscience (DST UNS) and Thematic Unit of Excellence (TUE), Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India.
| | | | | | | | | |
Collapse
|
13
|
Tsegaw YA, Góbi S, Förstel M, Maksyutenko P, Sander W, Kaiser RI. Formation of Hydroxylamine in Low-Temperature Interstellar Model Ices. J Phys Chem A 2017; 121:7477-7493. [PMID: 28892389 DOI: 10.1021/acs.jpca.7b07500] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yetsedaw A. Tsegaw
- Lehrstuhl
für Organische Chemie II, Ruhr-Universität Bochum, 44780 Bochum, Germany
| | | | | | | | - Wolfram Sander
- Lehrstuhl
für Organische Chemie II, Ruhr-Universität Bochum, 44780 Bochum, Germany
| | | |
Collapse
|
14
|
Hoffmann RC, Sanctis S, Schneider JJ. Molecular Precursors for ZnO Nanoparticles: Field-Assisted Synthesis, Electrophoretic Deposition, and Field-Effect Transistor Device Performance. Inorg Chem 2017; 56:7550-7557. [DOI: 10.1021/acs.inorgchem.7b01088] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Rudolf C. Hoffmann
- Fachbereich Chemie, Eduard-Zintl-Institut,
Fachgebiet Anorganische Chemie, Technische Universität Darmstadt, Alarich-Weiss-Straße 12, 64287 Darmstadt, Germany
| | - Shawn Sanctis
- Fachbereich Chemie, Eduard-Zintl-Institut,
Fachgebiet Anorganische Chemie, Technische Universität Darmstadt, Alarich-Weiss-Straße 12, 64287 Darmstadt, Germany
| | - Jörg J. Schneider
- Fachbereich Chemie, Eduard-Zintl-Institut,
Fachgebiet Anorganische Chemie, Technische Universität Darmstadt, Alarich-Weiss-Straße 12, 64287 Darmstadt, Germany
| |
Collapse
|
15
|
Góbi S, Bergantini A, Turner AM, Kaiser RI. Electron Radiolysis of Ammonium Perchlorate: A Reflectron Time-of-Flight Mass Spectrometric Study. J Phys Chem A 2017; 121:3879-3890. [PMID: 28445648 DOI: 10.1021/acs.jpca.7b01862] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sándor Góbi
- Department
of Chemistry and ‡W. M. Keck Laboratory in Astrochemistry, University of Hawaii at Ma̅noa, Honolulu, Hawaii 96822, United States
| | - Alexandre Bergantini
- Department
of Chemistry and ‡W. M. Keck Laboratory in Astrochemistry, University of Hawaii at Ma̅noa, Honolulu, Hawaii 96822, United States
| | - Andrew M. Turner
- Department
of Chemistry and ‡W. M. Keck Laboratory in Astrochemistry, University of Hawaii at Ma̅noa, Honolulu, Hawaii 96822, United States
| | - Ralf I. Kaiser
- Department
of Chemistry and ‡W. M. Keck Laboratory in Astrochemistry, University of Hawaii at Ma̅noa, Honolulu, Hawaii 96822, United States
| |
Collapse
|
16
|
Davis D, Kundu S, Prabhudesai VS, Krishnakumar E. O(-) from amorphous and crystalline CO2 ices. Phys Chem Chem Phys 2014; 16:8582-8. [PMID: 24671070 DOI: 10.1039/c3cp55421j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
O(-) desorbed from amorphous and crystalline films of CO2 at 18 K under low energy electron impact is studied using time of flight mass spectrometry. The nature of the CO2 film is characterized by Fourier transform infrared spectrometry as a function of film thickness. It is found that the desorption rate from amorphous films is considerably larger than that from crystalline films. The desorption signal from the 4 eV resonance is found to be the dominant one as compared to that from the higher energy resonances, notably the one at 8 eV observed in the gas phase. This is explained in terms of the large enhancement in the dissociative electron attachment cross section for the 4 eV resonance in the condensed phase reported earlier using the charge trapping method.
Collapse
Affiliation(s)
- Daly Davis
- Tata Institute of Fundamental Research, Mumbai-400005, India.
| | | | | | | |
Collapse
|
17
|
Collings MP, Dever JW, McCoustra MRS. The interaction of carbon monoxide with model astrophysical surfaces. Phys Chem Chem Phys 2014; 16:3479-92. [DOI: 10.1039/c3cp54024c] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
18
|
Sivaraman B, Raja Sekhar B, Jones N, Hoffmann S, Mason N. VUV spectroscopy of formamide ices. Chem Phys Lett 2012. [DOI: 10.1016/j.cplett.2012.10.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
19
|
Jheeta S, Ptasinska S, Sivaraman B, Mason N. The irradiation of 1:1 mixture of ammonia:carbon dioxide ice at 30K using 1kev electrons. Chem Phys Lett 2012. [DOI: 10.1016/j.cplett.2012.06.051] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
20
|
Preston TC, Signorell R. The formation and stability of co-crystalline NH3 · C2H2 aerosol particles. Mol Phys 2012. [DOI: 10.1080/00268976.2012.701343] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Thomas C. Preston
- a Department of Chemistry , University of British Columbia , 2036 Main Mall, Vancouver , BC, V6T 1Z1 , Canada
| | - Ruth Signorell
- a Department of Chemistry , University of British Columbia , 2036 Main Mall, Vancouver , BC, V6T 1Z1 , Canada
| |
Collapse
|
21
|
|
22
|
Hidaka H, Watanabe M, Kouchi A, Watanabe N. FTIR study of ammonia formation via the successive hydrogenation of N atoms trapped in a solid N2 matrix at low temperatures. Phys Chem Chem Phys 2011; 13:15798-802. [DOI: 10.1039/c1cp20645a] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
23
|
Parent P, Bournel F, Lasne J, Lacombe S, Strazzulla G, Gardonio S, Lizzit S, Kappler JP, Joly L, Laffon C, Carniato S. The irradiation of ammonia ice studied by near edge x-ray absorption spectroscopy. J Chem Phys 2009; 131:154308. [DOI: 10.1063/1.3243849] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
|
24
|
Gálvez Ó, Maté B, Martín-Llorente B, Herrero VJ, Escribano R. Phases of Solid Methanol. J Phys Chem A 2009; 113:3321-9. [DOI: 10.1021/jp810239r] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Óscar Gálvez
- Instituto de Estructura de la Materia, CSIC, Serrano 123, 28006 Madrid, Spain
| | - Belén Maté
- Instituto de Estructura de la Materia, CSIC, Serrano 123, 28006 Madrid, Spain
| | | | - Víctor J. Herrero
- Instituto de Estructura de la Materia, CSIC, Serrano 123, 28006 Madrid, Spain
| | - Rafael Escribano
- Instituto de Estructura de la Materia, CSIC, Serrano 123, 28006 Madrid, Spain
| |
Collapse
|
25
|
Bertin M, Martin I, Duvernay F, Theule P, Bossa JB, Borget F, Illenberger E, Lafosse A, Chiavassa T, Azria R. Chemistry induced by low-energy electrons in condensed multilayers of ammonia and carbon dioxide. Phys Chem Chem Phys 2009; 11:1838-45. [DOI: 10.1039/b812796d] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|