1
|
Zhang J, Kong W. Electron diffraction as a structure tool for charged and neutral nanoclusters formed in superfluid helium droplets. Phys Chem Chem Phys 2022; 24:6349-6362. [PMID: 35257134 PMCID: PMC10508180 DOI: 10.1039/d2cp00048b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This perspective presents the current status and future directions in using electron diffraction to determine the structures of clusters formed in superfluid helium droplets. The details of the experimental setup and data treatment procedures are explained, and several examples are illustrated. The ease of forming atomic and molecular clusters has been recognized since the invention of superfluid helium droplet beams. To resolve atomic structures from clusters formed in droplets, substantial efforts have been devoted to minimizing the contribution of helium to diffraction signals. With active background subtraction, we have obtained structures from clusters containing a few to more than 10 monomers, with and without heavy atoms to assist with the diffraction intensity, for both neutral and ionic species. From fittings of the diffraction profiles using model structures, we have observed that some small clusters adopt the structures of the corresponding solid sample, even for dimers such as iodine and pyrene, while others require trimers or tetramers to reach the structural motif of bulk solids, and smaller clusters such as CS2 dimers adopt gas phase structures. Cationic clusters of argon clusters contain an Ar3+ core, while pyrene dimers demonstrate a change in the intermolecular distance, from 3.5 Å for neutral dimers to 3.0 Å for cations. Future improvements in reducing the background of helium, and in expanding the information content of electron diffraction such as detection of charge distributions, are also discussed.
Collapse
Affiliation(s)
- Jie Zhang
- Department of Chemistry, Oregon State University, Corvallis, OR 97331, USA.
| | - Wei Kong
- Department of Chemistry, Oregon State University, Corvallis, OR 97331, USA.
| |
Collapse
|
2
|
Malloum A, Conradie J. Hydrogen bond networks of ammonia clusters: What we know and what we don’t know. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116199] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
|
3
|
Wang B, Hou P, Cai Y, Guo Z, Han D, Gao Y, Zhao L. Understanding the Hydrogen-Bonded Clusters of Ammonia (NH 3) n ( n = 3-6): Insights from the Electronic Structure Theory. ACS OMEGA 2020; 5:31724-31729. [PMID: 33344825 PMCID: PMC7745437 DOI: 10.1021/acsomega.0c04274] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Accepted: 11/20/2020] [Indexed: 05/08/2023]
Abstract
Although it is well known that hydrogen bonds commonly exist in ammonia clusters and play an important role, there are still many challenges in understanding the electronic structure properties of hydrogen bonds. In this paper, the geometric and electronic structure properties of cyclic ammonia clusters are investigated by using first-principles density functional theory (DFT) and the Møller-Plesset perturbation theory (MP2). The calculation results show that the pentamer and hexamer have deviated from the perfect plane, while the trimer and tetramer present planarization that has been confirmed by infrared (IR) spectra. The electronic structure analysis further shows that the covalent properties play a non-negligible role in hydrogen bonding. The results also indicate that the electronic structure facilitates structure planarization. Our work not only provides insight into the role and nature of hydrogen bonds in ammonia clusters but also provides a theoretical basis for frontier science in fields such as atmospheric haze and biomolecular functions.
Collapse
Affiliation(s)
- Bo Wang
- College
of Science, Northeast Electric Power University, No. 169 Changchun Road, Jilin City 132012, P. R. China
| | - Pugeng Hou
- College
of Science, Northeast Electric Power University, No. 169 Changchun Road, Jilin City 132012, P. R. China
| | - Yongmao Cai
- College
of Science, Northeast Electric Power University, No. 169 Changchun Road, Jilin City 132012, P. R. China
| | - Zhendong Guo
- College
of Science, Northeast Electric Power University, No. 169 Changchun Road, Jilin City 132012, P. R. China
| | - Dandan Han
- College
of Science, Northeast Electric Power University, No. 169 Changchun Road, Jilin City 132012, P. R. China
| | - Yang Gao
- Institute
of Fundamental and Frontier Sciences, University
of Electronic Science and Technology of China, Chengdu, Sichuan 610054, P. R. China
| | - Lei Zhao
- College
of Science, Northeast Electric Power University, No. 169 Changchun Road, Jilin City 132012, P. R. China
| |
Collapse
|
4
|
|
5
|
Mishra S, Nguyen HQ, Huang QR, Lin CK, Kuo JL, Patwari GN. Vibrational spectroscopic signatures of hydrogen bond induced NH stretch–bend Fermi-resonance in amines: The methylamine clusters and other N–H⋯N hydrogen-bonded complexes. J Chem Phys 2020; 153:194301. [DOI: 10.1063/5.0025778] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Affiliation(s)
- Saurabh Mishra
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Ha-Quyen Nguyen
- Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 10617, Taiwan
| | - Qian-Rui Huang
- Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 10617, Taiwan
| | - Chih-Kai Lin
- Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 10617, Taiwan
| | - Jer-Lai Kuo
- Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 10617, Taiwan
| | - G. Naresh Patwari
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| |
Collapse
|
6
|
Feng JY, Lee YP, Zhu CY, Hsu PJ, Kuo JL, Ebata T. IR-VUV spectroscopy of pyridine dimers, trimers and pyridine-ammonia complexes in a supersonic jet. Phys Chem Chem Phys 2020; 22:21520-21534. [PMID: 32955537 DOI: 10.1039/d0cp03197f] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The infrared spectra of the C-H stretching vibrations of (pyridine)m, m = 1-3, and the N-H stretching vibrations of (pyridine)m-(NH3)n, m = 1, 2; n = 1-4, complexes were investigated by infrared (IR)-vacuum ultraviolet (VUV) spectroscopy under jet-cooled conditions. The ionization potential (IP0) of the pyridine monomer was determined to be 74 546 cm-1 (9.242 eV), while its complexes showed only smooth curves of the ionization thresholds at ∼9 eV, indicating large structural changes in the ionic form. The pyridine monomer exhibits five main features with several satellite bands in the C-H stretching region at 3000-3200 cm-1. Anharmonic calculations including Fermi-resonance were carried out to analyze the candidates of the overtone and combination bands which can couple to the C-H stretching fundamentals. For (pyridine)2 and (pyridine)3, most C-H bands are blue-shifted by 3-5 cm-1 from those of the monomer. The structures revealed by random searching algorithms with density functional methods indicate that the π-stacked structure is most stable for (pyridine)2, while (pyridine)3 prefers the structures stabilized by dipole-dipole and C-Hπ interactions. For the (pyridine)m-(NH3)n complexes, the mass spectrum exhibited a wide range distribution of the complexes. The observed IR spectra in the N-H stretching vibrations of the complexes showed four main bands in the 3200-3450 cm-1 region. These features are very similar to those of (NH3)n complexes, and the bands are assigned to the anti-symmetric N-H stretching band (ν3), the symmetric N-H stretching (ν1) band, and the first overtone bands of the N-H bending vibrations (2ν4). The anharmonic calculations including the Fermi-resonance between ν1 and 2ν4 well reproduced the observed spectra.
Collapse
Affiliation(s)
- Jun-Ying Feng
- Department of Applied Chemistry and Institute for Molecular Science, National Chiao Tung University, Hsinchu 30010, Taiwan.
| | | | | | | | | | | |
Collapse
|
7
|
Zhang J, Bradford SD, Kong W, Zhang C, Xue L. Electron diffraction of CS 2 nanoclusters embedded in superfluid helium droplets. J Chem Phys 2020; 152:224306. [PMID: 32534524 PMCID: PMC7292678 DOI: 10.1063/5.0011340] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 05/25/2020] [Indexed: 11/14/2022] Open
Abstract
We report experimental results from electron diffraction of CS2 nanoclusters embedded in superfluid helium droplets. From detailed measurements of the sizes of doped droplets, we can model the doping statistics under different experimental conditions, thereby obtaining the range of cluster sizes of CS2. Using a least squares fitting procedure, we can then determine the structures and contributions of dimers, trimers, and tetramers embedded in small droplets. While dimers prefer a stable gas phase structure, trimers and tetramers seem to forgo the highly symmetric gas phase structures and prefer compact cuts from the crystalline structure of CS2. In larger droplets containing more than 12 CS2 monomers, the diffraction profile is consistent with a three-dimensional nanostructure of bulk CS2. This work demonstrates the feasibility of electron diffraction for in situ monitoring of nanocluster formation in superfluid helium droplets.
Collapse
Affiliation(s)
- Jie Zhang
- Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, USA
| | - Stephen D. Bradford
- Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, USA
| | - Wei Kong
- Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, USA
| | - Chengzhu Zhang
- Department of Statistics, Oregon State University, Corvallis, Oregon 97331, USA
| | - Lan Xue
- Department of Statistics, Oregon State University, Corvallis, Oregon 97331, USA
| |
Collapse
|
8
|
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: 0.3] [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
|
9
|
Kozubal J, Heck TR, Metz RB. Vibrational Spectroscopy of Cr+(NH3)n (n = 1–6) Reveals Coordination and Hydrogen-Bonding Motifs. J Phys Chem A 2019; 123:4929-4936. [DOI: 10.1021/acs.jpca.9b03196] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Justine Kozubal
- Department of Chemistry, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
| | - Tristan R. Heck
- Department of Chemistry, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
| | - Ricardo B. Metz
- Department of Chemistry, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
| |
Collapse
|
10
|
Malloum A, Fifen JJ, Conradie J. Structures and spectroscopy of the ammonia eicosamer, (NH3)n=20. J Chem Phys 2018; 149:024304. [DOI: 10.1063/1.5031790] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Affiliation(s)
- Alhadji Malloum
- Faculty of Science, Department of Physics, University of Ngaoundere, P.O. Box 454, Ngaoundere, Cameroon
| | - Jean Jules Fifen
- Faculty of Science, Department of Physics, University of Ngaoundere, P.O. Box 454, Ngaoundere, Cameroon
| | - Jeanet Conradie
- Department of Chemistry, University of the Free State, P.O. Box 339, Bloemfontein 9300, South Africa
| |
Collapse
|
11
|
Ekimova M, Quevedo W, Szyc Ł, Iannuzzi M, Wernet P, Odelius M, Nibbering ETJ. Aqueous Solvation of Ammonia and Ammonium: Probing Hydrogen Bond Motifs with FT-IR and Soft X-ray Spectroscopy. J Am Chem Soc 2017; 139:12773-12783. [PMID: 28810120 DOI: 10.1021/jacs.7b07207] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In a multifaceted investigation combining local soft X-ray and vibrational spectroscopic probes with ab initio molecular dynamics simulations, hydrogen-bonding interactions of two key principal amine compounds in aqueous solution, ammonia (NH3) and ammonium ion (NH4+), are quantitatively assessed in terms of electronic structure, solvation structure, and dynamics. From the X-ray measurements and complementary determination of the IR-active hydrogen stretching and bending modes of NH3 and NH4+ in aqueous solution, the picture emerges of a comparatively strongly hydrogen-bonded NH4+ ion via N-H donating interactions, whereas NH3 has a strongly accepting hydrogen bond with one water molecule at the nitrogen lone pair but only weakly N-H donating hydrogen bonds. In contrast to the case of hydrogen bonding among solvent water molecules, we find that energy mismatch between occupied orbitals of both the solutes NH3 and NH4+ and the surrounding water prevents strong mixing between orbitals upon hydrogen bonding and, thus, inhibits substantial charge transfer between solute and solvent. A close inspection of the calculated unoccupied molecular orbitals, in conjunction with experimentally measured N K-edge absorption spectra, reveals the different nature of the electronic structural effects of these two key principal amine compounds imposed by hydrogen bonding to water, where a pH-dependent excitation energy appears to be an intrinsic property. These results provide a benchmark for hydrogen bonding of other nitrogen-containing acids and bases.
Collapse
Affiliation(s)
- Maria Ekimova
- Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy , Max Born Strasse 2A, 12489 Berlin, Germany
| | - Wilson Quevedo
- Institute for Methods and Instrumentation for Synchrotron Radiation Research, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH , Albert-Einstein-Strasse 15, 12489 Berlin, Germany
| | - Łukasz Szyc
- Magnosco c/o LTB Lasertechnik Berlin GmbH , Am Studio 2c, 12489 Berlin, Germany
| | - Marcella Iannuzzi
- Institute of Physical Chemistry, University of Zurich , Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Philippe Wernet
- Institute for Methods and Instrumentation for Synchrotron Radiation Research, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH , Albert-Einstein-Strasse 15, 12489 Berlin, Germany
| | - Michael Odelius
- Department of Physics, Stockholm University , AlbaNova University Center, 106 91 Stockholm, Sweden
| | - Erik T J Nibbering
- Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy , Max Born Strasse 2A, 12489 Berlin, Germany
| |
Collapse
|
12
|
He Y, Zhang J, Lei L, Kong W. Self-Assembly of Iodine in Superfluid Helium Droplets: Halogen Bonds and Nanocrystals. Angew Chem Int Ed Engl 2017; 56:3541-3545. [PMID: 28220998 DOI: 10.1002/anie.201611922] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Revised: 01/18/2017] [Indexed: 11/09/2022]
Abstract
We present evidence of halogen bond in iodine clusters formed in superfluid helium droplets based on results from electron diffraction. Iodine crystals are known to form layered structures with intralayer halogen bonds, with interatomic distances shorter than the sum of the van der Waals radii of the two neighboring atoms. The diffraction profile of dimer dominated clusters embedded in helium droplets reveals an interatomic distance of 3.65 Å, much closer to the value of 3.5 Å in iodine crystals than to the van der Waals distance of 4.3 Å. The profile from larger iodine clusters deviates from a single layer structure; instead, a bi-layer structure qualitatively fits the experimental data. This work highlights the possibility of small halogen bonded iodine clusters, albeit in a perhaps limited environment of superfluid helium droplets. The role of superfluid helium in guiding the trapped molecules into local potential minima awaits further investigation.
Collapse
Affiliation(s)
- Yunteng He
- Department of Chemistry, Oregon State University, Corvallis, OR, 97331, USA
| | - Jie Zhang
- Department of Chemistry, Oregon State University, Corvallis, OR, 97331, USA
| | - Lei Lei
- Department of Chemistry, Oregon State University, Corvallis, OR, 97331, USA
| | - Wei Kong
- Department of Chemistry, Oregon State University, Corvallis, OR, 97331, USA
| |
Collapse
|
13
|
He Y, Zhang J, Lei L, Kong W. Self‐Assembly of Iodine in Superfluid Helium Droplets: Halogen Bonds and Nanocrystals. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201611922] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yunteng He
- Department of Chemistry Oregon State University Corvallis OR 97331 USA
| | - Jie Zhang
- Department of Chemistry Oregon State University Corvallis OR 97331 USA
| | - Lei Lei
- Department of Chemistry Oregon State University Corvallis OR 97331 USA
| | - Wei Kong
- Department of Chemistry Oregon State University Corvallis OR 97331 USA
| |
Collapse
|
14
|
Gomez LF, O’Connell SMO, Jones CF, Kwok J, Vilesov AF. Laser-induced reconstruction of Ag clusters in helium droplets. J Chem Phys 2016. [DOI: 10.1063/1.4962362] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Luis F. Gomez
- Department of Chemistry, University of Southern California, Los Angeles, California 90089, USA
| | - Sean M. O. O’Connell
- Department of Chemistry, University of Southern California, Los Angeles, California 90089, USA
| | - Curtis F. Jones
- Department of Chemistry, University of Southern California, Los Angeles, California 90089, USA
| | - Justin Kwok
- Department of Chemistry, University of Southern California, Los Angeles, California 90089, USA
| | - Andrey F. Vilesov
- Department of Chemistry, University of Southern California, Los Angeles, California 90089, USA
| |
Collapse
|
15
|
Loginov E, Gomez LF, Sartakov BG, Vilesov AF. Formation of Large Ag Clusters with Shells of Methane, Ethylene, and Acetylene in He Droplets. J Phys Chem A 2016; 120:6738-44. [PMID: 27500443 DOI: 10.1021/acs.jpca.6b05762] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Helium droplets were used to assemble composite metal-molecular clusters. Produced clusters have several hundreds of silver atoms in the core, immersed in a shell consisting of methane, ethylene, or acetylene molecules. The structure of the clusters was studied via infrared spectra of the C-H stretches of the hydrocarbon molecules. The spectra of the clusters containing methane and acetylene show two distinct features due to molecules on the interface with silver core and those in the volume of the neat molecular part of the clusters. The relative intensities of the peaks are in good agreement with the estimates based on the number of the captured particles. Experiments also suggest that selection rules for infrared transitions for molecules adsorbed on metal surfaces are also valid for silver clusters as small as 300 atoms.
Collapse
Affiliation(s)
- Evgeny Loginov
- Department of Chemistry, University of Southern California , Los Angeles, California 90089, United States
| | - Luis F Gomez
- Department of Chemistry, University of Southern California , Los Angeles, California 90089, United States
| | - Boris G Sartakov
- Department of Chemistry, University of Southern California , Los Angeles, California 90089, United States
| | - Andrey F Vilesov
- Department of Chemistry, University of Southern California , Los Angeles, California 90089, United States
| |
Collapse
|
16
|
Slipchenko MN, Hoshina H, Stolyarov D, Sartakov BG, Vilesov AF. Internal Rotation of Methane Molecules in Large Clusters. J Phys Chem Lett 2016; 7:47-50. [PMID: 26653992 DOI: 10.1021/acs.jpclett.5b02548] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Methane is one of the very few substances that show rotation of individual molecules in the crystalline phase. Here we explore the evolution of the rotation spectrum of methane from single molecules to clusters containing up to about 4 × 10(3) molecules. The clusters were assembled in He droplets at T = 0.38 K and studied via infrared laser spectroscopy in the ν3 region of the methane molecules. Well-resolved rotational structure in the spectra was observed in clusters containing up to about 50 molecules. We have concluded that in distinction to the crystals molecular rotation in methane clusters is confined to the surface and is enabled by low coordination of the molecules. On the contrary the molecules in the cluster's interior are in amorphous state wherein the rotation is quenched. These results demonstrate that even at very low temperature the surface of the methane clusters remains fluxional due to quantum effects.
Collapse
Affiliation(s)
- Mikhail N Slipchenko
- Department of Chemistry, University of Southern California , Los Angeles, California 90089, United States
| | - Hiromichi Hoshina
- Department of Chemistry, University of Southern California , Los Angeles, California 90089, United States
| | - Daniil Stolyarov
- Department of Chemistry, University of Southern California , Los Angeles, California 90089, United States
| | - Boris G Sartakov
- General Physics Institute, RAS , Vavilov str. 38, 119991 Moscow, Russia
| | - Andrey F Vilesov
- Department of Chemistry, University of Southern California , Los Angeles, California 90089, United States
| |
Collapse
|
17
|
Ho KL, Lee LY, Katada M, Fujii A, Kuo JL. An ab initio anharmonic approach to study vibrational spectra of small ammonia clusters. Phys Chem Chem Phys 2016; 18:30498-30506. [DOI: 10.1039/c6cp05537k] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Fermi resonance between the N–H stretching (ν1 and ν3) and the overtone of N–H bending (2ν4) in ammonia has hindered the interpretation and assignments of experimental spectra of small ammonia clusters.
Collapse
Affiliation(s)
- Kun-Lin Ho
- Institute of Atomic and Molecular Sciences
- Academia Sinica
- Taipei 10617
- Taiwan
- Department of Physics
| | - Lo-Yun Lee
- Institute of Atomic and Molecular Sciences
- Academia Sinica
- Taipei 10617
- Taiwan
| | - Marusu Katada
- Department of Chemistry
- Graduate School of Science
- Tohoku University
- Sendai 980-8578
- Japan
| | - Asuka Fujii
- Department of Chemistry
- Graduate School of Science
- Tohoku University
- Sendai 980-8578
- Japan
| | - Jer-Lai Kuo
- Institute of Atomic and Molecular Sciences
- Academia Sinica
- Taipei 10617
- Taiwan
| |
Collapse
|
18
|
Malloum A, Fifen JJ, Dhaouadi Z, Engo SGN, Jaidane NE. Structures and relative stabilities of ammonia clusters at different temperatures: DFT vs. ab initio. Phys Chem Chem Phys 2015; 17:29226-42. [DOI: 10.1039/c5cp03374h] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The global minimum energy structures of (NH3)n=2–10are pointed out for the first time at a given temperature.
Collapse
Affiliation(s)
- Alhadji Malloum
- Department of Physics
- Faculty of Science
- University of Ngaoundere
- Ngaoundere 454
- Cameroon
| | - Jean Jules Fifen
- Department of Physics
- Faculty of Science
- University of Ngaoundere
- Ngaoundere 454
- Cameroon
| | - Zoubeida Dhaouadi
- Laboratoire de Spectroscopie Atomique Moléculaire et Applications
- Faculté des Sciences de Tunis
- Université de Tunis El Manar
- Tunis
- Tunisie
| | - Serge Guy Nana Engo
- Department of Physics
- Faculty of Science
- University of Ngaoundere
- Ngaoundere 454
- Cameroon
| | - Nejm-Eddine Jaidane
- Laboratoire de Spectroscopie Atomique Moléculaire et Applications
- Faculté des Sciences de Tunis
- Université de Tunis El Manar
- Tunis
- Tunisie
| |
Collapse
|
19
|
|
20
|
|
21
|
Signorell R, Yoder BL, West AHC, Ferreiro JJ, Saak CM. Angle-resolved valence shell photoelectron spectroscopy of neutral nanosized molecular aggregates. Chem Sci 2014. [DOI: 10.1039/c3sc53423e] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Angle-resolved photoelectron spectroscopy opens a new avenue to probe the orbital character of solutes and solvents from the nanoscale to the bulk.
Collapse
Affiliation(s)
- Ruth Signorell
- ETH Zürich
- Laboratory of Physical Chemistry
- Zürich, Switzerland
| | - Bruce L. Yoder
- ETH Zürich
- Laboratory of Physical Chemistry
- Zürich, Switzerland
| | - Adam H. C. West
- ETH Zürich
- Laboratory of Physical Chemistry
- Zürich, Switzerland
| | | | | |
Collapse
|
22
|
Katada M, Shishido R, Fujii A. Infrared spectroscopy of large-sized neutral and protonated ammonia clusters. Phys Chem Chem Phys 2014; 16:7595-601. [DOI: 10.1039/c4cp00178h] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Size selective IR spectroscopy shows the nature of hydrogen bond networks in neutral and protonated ammonia clusters.
Collapse
Affiliation(s)
- Marusu Katada
- Department of Chemistry
- Graduate School of Science
- Tohoku University
- Sendai 980-8578, Japan
| | - Ryunosuke Shishido
- Department of Chemistry
- Graduate School of Science
- Tohoku University
- Sendai 980-8578, Japan
| | - Asuka Fujii
- Department of Chemistry
- Graduate School of Science
- Tohoku University
- Sendai 980-8578, Japan
| |
Collapse
|
23
|
Gomez LF, Sliter R, Skvortsov D, Hoshina H, Douberly GE, Vilesov AF. Infrared Spectra in the 3 μm Region of Ethane and Ethane Clusters in Helium Droplets. J Phys Chem A 2013; 117:13648-53. [DOI: 10.1021/jp4076542] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Luis F. Gomez
- Department
of Chemistry, University of Southern California, Los Angeles, California 90089, United States
| | - Russell Sliter
- Department
of Chemistry, University of Southern California, Los Angeles, California 90089, United States
| | - Dmitry Skvortsov
- Department
of Chemistry, University of Southern California, Los Angeles, California 90089, United States
| | - Hiromichi Hoshina
- Department
of Chemistry, University of Southern California, Los Angeles, California 90089, United States
| | - Gary E. Douberly
- Department
of Chemistry, University of Georgia, Athens, Georgia 30602, United States
| | - Andrey F. Vilesov
- Department
of Chemistry, University of Southern California, Los Angeles, California 90089, United States
| |
Collapse
|
24
|
Boatwright A, Feng C, Spence D, Latimer E, Binns C, Ellis AM, Yang S. Helium droplets: a new route to nanoparticles. Faraday Discuss 2013; 162:113-24. [PMID: 24015579 DOI: 10.1039/c2fd20136d] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Helium droplets are large helium clusters that are capable of picking up individual atoms and molecules and show promise as nano-reactors for the synthesis of unique nanoparticles. In particular, the sequential addition of materials of different types offers opportunities for the fabrication of novel core-shell nanoparticles that cannot be synthesised by other methods. To exploit this potential, here we have carried out a mass spectrometry investigation on metal clusters in order to establish how to control the doping conditions for the fabrication of nanoparticles in superfluid helium droplets, and in particular to develop a recipe to control core and shell ratios in the case of core-shell nanoparticles. Several types of metal nanoparticles, including pure Ag, Au and Ni nanoparticles, and Ag/Au and Ni/Au core-shell systems, have been synthesised and then removed from the helium droplets by deposition on substrates for ex situ investigations using high-resolution transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). The TEM imaging has been used to estimate the sizes of nanoparticles, which show a bimodel distribution under the conditions employed. We also present the first evidence that crystalline metal nanoparticles are formed by self-assembly of metal atoms in helium droplets. The XPS investigation of Ni/Au core-shell nanoparticles shows an absence of any Au 4f core-level shift that would occur on alloying of Au and Ni, which provides the first direct evidence for the successful formation of core-shell nanoparticles using superfluid helium droplets.
Collapse
Affiliation(s)
- Adrian Boatwright
- Department of Chemistry, University of Leicester, Leicester, LE1 7RH, UK
| | | | | | | | | | | | | |
Collapse
|
25
|
West AHC, Yoder BL, Signorell R. Size-Dependent Velocity Map Photoelectron Imaging of Nanosized Ammonia Aerosol Particles. J Phys Chem A 2013; 117:13326-35. [PMID: 23919276 DOI: 10.1021/jp406313a] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Adam H. C. West
- Laboratory of Physical Chemistry, ETH Zürich, Wolfgang-Pauli-Strasse 10, CH-8093 Zürich,
Switzerland
| | - Bruce L. Yoder
- Laboratory of Physical Chemistry, ETH Zürich, Wolfgang-Pauli-Strasse 10, CH-8093 Zürich,
Switzerland
| | - Ruth Signorell
- Laboratory of Physical Chemistry, ETH Zürich, Wolfgang-Pauli-Strasse 10, CH-8093 Zürich,
Switzerland
| |
Collapse
|
26
|
Blaser S, Ottiger P, Frey HM, Leutwyler S. NH3 as a Strong H-Bond Donor in Singly- and Doubly-Bridged Ammonia Solvent Clusters: 2-Pyridone·(NH3)n, n = 1–3. J Phys Chem A 2013; 117:7523-34. [DOI: 10.1021/jp401786f] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Susan Blaser
- Departement für Chemie und Biochemie, Universität Bern, Freiestrasse
3, CH-3012 Bern, Switzerland
| | - Philipp Ottiger
- Departement für Chemie und Biochemie, Universität Bern, Freiestrasse
3, CH-3012 Bern, Switzerland
| | - Hans-Martin Frey
- Departement für Chemie und Biochemie, Universität Bern, Freiestrasse
3, CH-3012 Bern, Switzerland
| | - Samuel Leutwyler
- Departement für Chemie und Biochemie, Universität Bern, Freiestrasse
3, CH-3012 Bern, Switzerland
| |
Collapse
|
27
|
Yoder BL, West AHC, Schläppi B, Chasovskikh E, Signorell R. A velocity map imaging photoelectron spectrometer for the study of ultrafine aerosols with a table-top VUV laser and Na-doping for particle sizing applied to dimethyl ether condensation. J Chem Phys 2013; 138:044202. [PMID: 23387577 DOI: 10.1063/1.4788620] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Bruce L Yoder
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | | | | | | | | |
Collapse
|
28
|
|
29
|
Abstract
Helium droplets spanning a wide size range, N(He) = 10(3)-10(10), were formed in a continuous-nozzle beam expansion at different nozzle temperatures and a constant stagnation pressure of 20 bars. The average sizes of the droplets have been obtained by attenuation of the droplet beam through collisions with argon and helium gases at room temperature. The results obtained are in good agreement with previous measurements in the size range N(He) = 10(5)-10(7). Moreover, the measurements give the average sizes in the previously uncharacterized range of very large droplets of 10(7)-10(10) atoms. The droplet sizes and beam flux increase rapidly at nozzle temperatures below 6 K, which is ascribed to the formation of droplets within the nozzle interior. The mass spectra of the droplet beam upon electron impact ionization have also been obtained. The spectra show a large increase in the intensity of the He(4) (+) signal upon increase of the droplet size, an effect which can be used as a secondary size standard in the droplet size range N(He) = 10(4)-10(9) atoms.
Collapse
Affiliation(s)
- Luis F Gomez
- Department of Chemistry, University of Southern California, Los Angeles, California 90089, USA
| | | | | | | |
Collapse
|
30
|
Patrone M, Mella M. Sequential growth simulation of (NH3)n clusters (n=2–8) in ultracold superfluid environment. Chem Phys Lett 2011. [DOI: 10.1016/j.cplett.2011.07.086] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
31
|
Suffren Y, Rollet FG, Reber C. RAMAN SPECTROSCOPY OF TRANSITION METAL COMPLEXES: MOLECULAR VIBRATIONAL FREQUENCIES, PHASE TRANSITIONS, ISOMERS, AND ELECTRONIC STRUCTURE. COMMENT INORG CHEM 2011. [DOI: 10.1080/02603594.2012.659776] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
32
|
Loginov E, Gomez LF, Vilesov AF. Surface Deposition and Imaging of Large Ag Clusters Formed in He Droplets. J Phys Chem A 2011; 115:7199-204. [DOI: 10.1021/jp200198n] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Evgeny Loginov
- Department of Chemistry, University of Southern California, Los Angeles, California 90089, United States
| | - Luis F. Gomez
- Department of Chemistry, University of Southern California, Los Angeles, California 90089, United States
| | - Andrey F. Vilesov
- Department of Chemistry, University of Southern California, Los Angeles, California 90089, United States
| |
Collapse
|
33
|
Cargnoni F, Mella M. Solubility of Metal Atoms in Helium Droplets: Exploring the Effect of the Well Depth Using the Coinage Metals Cu and Ag. J Phys Chem A 2011; 115:7141-52. [PMID: 21425774 DOI: 10.1021/jp112408d] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - Massimo Mella
- School of Chemistry, Cardiff University, Main Building, CF10 3AT Cardiff, United Kingdom
- Dipartimento di Scienze Chimiche ed Ambientali, Università degli Studi dell’Insubria, via Lucini 3, 22100 Como (I), Italy
| |
Collapse
|
34
|
Curotto E, Mella M. Quantum Monte Carlo simulations of selected ammonia clusters (n = 2–5): Isotope effects on the ground state of typical hydrogen bonded systems. J Chem Phys 2010; 133:214301. [DOI: 10.1063/1.3506027] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
|
35
|
Crystalline structures in large ammonia clusters studied by IR cavity ringdown spectroscopy and a density functional theory calculation. Chem Phys Lett 2010. [DOI: 10.1016/j.cplett.2010.03.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
36
|
Lubombo C, Curotto E, Janeiro Barral PE, Mella M. Thermodynamic properties of ammonia clusters (NH3)n n=2–11: Comparing classical and quantum simulation results for hydrogen bonded species. J Chem Phys 2009; 131:034312. [DOI: 10.1063/1.3159398] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
37
|
Alves SG, Vilesov AF, Ferreira SC. Effects of the mean free path and relaxation in a model for the aggregation of particles in superfluid media. J Chem Phys 2009; 130:244506. [DOI: 10.1063/1.3158359] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
|
38
|
Sigurbjörnsson ÓF, Firanescu G, Signorell R. Intrinsic Particle Properties from Vibrational Spectra of Aerosols. Annu Rev Phys Chem 2009; 60:127-46. [DOI: 10.1146/annurev.physchem.040808.090356] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The spectroscopy of aerosols is developing into an active and important field. It allows us to characterize aerosols in a nonintrusive way, in real time, and on site. Understanding the spectroscopic features of these highly complex systems requires the development of novel experimental as well as theoretical methods. This review focuses on infrared extinction spectra. The main goal is to summarize how information about intrinsic particle properties (such as size, shape, and architecture) can be gathered from observed spectroscopic patterns. We discuss the limitations of standard continuum approaches, which have been used for decades to analyze infrared spectra, and we demonstrate the importance of molecular models for the analysis of spectroscopic data.
Collapse
Affiliation(s)
| | - George Firanescu
- Department of Chemistry, University of British Columbia, Vancouver V6T 1Z1, Canada
| | - Ruth Signorell
- Department of Chemistry, University of British Columbia, Vancouver V6T 1Z1, Canada
| |
Collapse
|