Journal articles: 'Ionic clusters'

1

Castleman, A. W., and R. G. Keesee. "Ionic clusters." Chemical Reviews 86, no. 3 (June 1986): 589–618. http://dx.doi.org/10.1021/cr00073a005.

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2

Evangelisti, Stefano, and Thierry Leininger. "Ionic nitrogen clusters." Journal of Molecular Structure: THEOCHEM 621, no. 1-2 (February 2003): 43–50. http://dx.doi.org/10.1016/s0166-1280(02)00532-8.

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3

Rajagopal, Gunaretnam, R. N. Barnett, and Uzi Landman. "Metallization of ionic clusters." Physical Review Letters 67, no. 6 (August 5, 1991): 727–30. http://dx.doi.org/10.1103/physrevlett.67.727.

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4

GERCHIKOV, LEONID G., ANDREY V. SOLOV'YOV, and WALTER GREINER. "DYNAMIC JELLIUM MODEL FOR METALLIC CLUSTERS." International Journal of Modern Physics E 08, no. 03 (June 1999): 289–98. http://dx.doi.org/10.1142/s0218301399000203.

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We have developed a dynamic jellium model for metallic clusters, which treats simultaneously the vibrational modes of the ionic jellium background in a cluster, the quantized electron motion and the interaction between the electronic and the ionic subsystems beyond the adiabatic approximation. Using this model, we have calculated the widths of electron excitations in metal clusters in the vicinity of the plasmon resonance caused by the multiphonon transitions and investigated their temperature dependence. We estimated the decay time and the energy relaxation time of electron excitations in metal clusters.

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5

Akdeniz, Z., Z. Çiçek, G. Pastore, and M. P. Tosi. "Ionic Clusters in Aluminium–Sodium Fluoride Melts." Modern Physics Letters B 12, no. 23 (October 10, 1998): 995–1002. http://dx.doi.org/10.1142/s0217984998001165.

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From Raman scattering experiments three types of charged AlF n cluster (with n = 4, 5 and 6) have been proposed to coexist in liquid alkali fluoroaluminates such as cryolite ( Na 3 AlF 6). We characterize these isolated clusters by a phenomenological ionic model and employ it to examine how local screening of the excess charge on a cluster may be effected by sodium ions at various compositions in the liquid. We provide the first theoretical explanation for the stability of the AlF 5 cluster at the compositions Na 3 AlF 6 and Na 2 AlF 5.

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6

Bréchignac, C., Ph Cahuzac, and J. Ph Roux. "Photoionization of potassium clusters: Neutral and ionic cluster stabilities." Journal of Chemical Physics 87, no. 1 (July 1987): 229–38. http://dx.doi.org/10.1063/1.453621.

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7

Yu, Mei Yan, Wan Xia Wang, and Shou Gang Chen. "BPW91 Method Used in Analyzing Electronic Structures and Magnetic Properties of Ni_n (2-13) Clusters." Materials Science Forum 809-810 (December 2014): 406–11. http://dx.doi.org/10.4028/www.scientific.net/msf.809-810.406.

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The bond length, average binding energy, magnetic moment per atom and the ionic potential of Nin(2-13) clusters were calculated in detail. The variations of magnetic moment per atom and the ionic potential agree well with experimental data. Theoretical results show that BPW91/Lanl2dz method is the best method and basis set for nickel clusters research, respectively. The ground state configurations and electronic structure properties of Nin(2-13) clusters were investigated using the BPW91/LanL2DZ level of DFT method. Through the molecular orbital, we could explain the paramagnetic and diamagnetic to the influence of the magnetic moment after different nickel cluster molecular hybridization.

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8

Filippone, Francesco, and Franco A. Gianturco. "Simulating ionic microsolvation: protonated argon clusters." Physical Chemistry Chemical Physics 1, no. 24 (1999): 5537–45. http://dx.doi.org/10.1039/a907734k.

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9

Gai, Huadong, Liem X. Dang, Gregory K. Schenter, and Bruce C. Garrett. "Quantum Simulation of Aqueous Ionic Clusters." Journal of Physical Chemistry 99, no. 36 (September 1995): 13303–6. http://dx.doi.org/10.1021/j100036a001.

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10

Khanna, S. N., and P. Jena. "Designing ionic solids from metallic clusters." Chemical Physics Letters 219, no. 5-6 (March 1994): 479–83. http://dx.doi.org/10.1016/0009-2614(94)00097-2.

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11

Martrenchard, S., C. Dedonder-Lardeux, I. Dimicoli, G. Grégoire, C. Jouvet, M. Mons, and D. Solgadi. "Reactivity of vinyl chloride ionic clusters." Chemical Physics 239, no. 1-3 (December 1998): 331–43. http://dx.doi.org/10.1016/s0301-0104(98)00255-9.

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12

Tadano, Kenji, Eisaku Hirasawa, Yasufumi Yamamoto, Hitoshi Yamamoto, and Shinichi Yano. "Transition of Ionic Clusters in Ionomers." Japanese Journal of Applied Physics 26, Part 2, No. 9 (September 20, 1987): L1440—L1442. http://dx.doi.org/10.1143/jjap.26.l1440.

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13

Häkkinen, H., and M. Manninen. "Metallic clusters on an ionic surface." Europhysics Letters (EPL) 34, no. 3 (April 20, 1996): 177–82. http://dx.doi.org/10.1209/epl/i1996-00435-1.

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14

Sen, P., C. N. R. Rao, and J. M. Thomas. "Structure of alkali metal ionic clusters." Journal of Molecular Structure 146 (August 1986): 171–74. http://dx.doi.org/10.1016/0022-2860(86)80290-3.

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15

Last, Isidore, and Thomas F. George. "Charge motion effects in ionic clusters." Chemical Physics Letters 183, no. 6 (September 1991): 547–51. http://dx.doi.org/10.1016/0009-2614(91)80173-u.

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16

Giardini-Guidoni, A., G. Pizzella, R. Teghil, M. Foresti, M. Snels, and S. Piccirillo. "Production and reactivity of ionic clusters." Applied Surface Science 54 (January 1992): 171–74. http://dx.doi.org/10.1016/0169-4332(92)90039-z.

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17

Sun, Zheng, Chi-Kit Siu, O. Petru Balaj, Mirko Gruber, Vladimir E. Bondybey, and Martin K. Beyer. "Proton Transfer in Ionic Water Clusters." Angewandte Chemie International Edition 45, no. 24 (June 12, 2006): 4027–30. http://dx.doi.org/10.1002/anie.200504135.

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18

Zhang, Qichun, Shou-Tian Zheng, Xianhui Bu, and Pingyun Feng. "Two-Step Synthesis of a Novel Cd17Sulfide Cluster through Ionic Clusters." Zeitschrift für anorganische und allgemeine Chemie 638, no. 15 (September 24, 2012): 2470–72. http://dx.doi.org/10.1002/zaac.201200265.

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19

Liu, Rang Su, Z. A. Tian, X. H. Yi, H. R. Liu, and P. Peng. "Evolution Mechanisms of Nano-Clusters in a Large-Scale System of 10⁶ Liquid Metal Atoms During Rapid Cooling Processes." Solid State Phenomena 121-123 (March 2007): 1049–52. http://dx.doi.org/10.4028/www.scientific.net/ssp.121-123.1049.

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A molecular dynamics simulation study has been performed for a large-sized system consisting of 106 liquid metal Al atoms to investigate the evolution characteristics of nano-clusters formed during rapid solidification processes. The cluster-type index method (CTIM) has been applied to describe the structural configurations of the basic clusters and nano-clusters. The results show that the icosahedral clusters (12 0 12 0) and their combinations play a critical role in the microstructural transitions. The nano-clusters are mainly formed by combining basic and medium sized clusters through continuous evolution. Their structural configurations are different from the multi-shell structures obtained by gaseous deposition, ionic spray, and so on. The central atoms of basic clusters composing the nano-cluster are bonded with each other, some central atoms are multi-bonded, and others single-bonded.

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20

Lee, Keum-Ju, Hye-Mi So, Byoung-Kye Kim, Do Won Kim, Jee-Hwan Jang, Ki-Jeong Kong, Hyunju Chang, and Jeong-O. Lee. "Single Nucleotide Polymorphism Detection Using Au-Decorated Single-Walled Carbon Nanotube Field Effect Transistors." Journal of Nanomaterials 2011 (2011): 1–8. http://dx.doi.org/10.1155/2011/105138.

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We demonstrate that Au-cluster-decorated single-walled carbon nanotubes (SWNTs) may be used to discriminate single nucleotide polymorphism (SNP). Nanoscale Au clusters were formed on the side walls of carbon nanotubes in a transistor geometry using electrochemical deposition. The effect of Au cluster decoration appeared as hole doping when electrical transport characteristics were examined. Thiolated single-stranded probe peptide nucleic acid (PNA) was successfully immobilized on Au clusters decorating single-walled carbon nanotube field-effect transistors (SWNT-FETs), resulting in a conductance decrease that could be explained by a decrease in Au work function upon adsorption of thiolated PNA. Although a target single-stranded DNA (ssDNA) with a single mismatch did not cause any change in electrical conductance, a clear decrease in conductance was observed with matched ssDNA, thereby showing the possibility of SNP (single nucleotide polymorphism) detection using Au-cluster-decorated SWNT-FETs. However, a power to discriminate SNP target is lost in high ionic environment. We can conclude that observed SNP discrimination in low ionic environment is due to the hampered binding of SNP target on nanoscale surfaces in low ionic conditions.

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21

Zhang, Jie, and Wei Kong. "Electron diffraction as a structure tool for charged and neutral nanoclusters formed in superfluid helium droplets." Physical Chemistry Chemical Physics 24, no. 11 (2022): 6349–62. http://dx.doi.org/10.1039/d2cp00048b.

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Electron diffraction of clusters doped in superfluid helium droplets is an in situ technique for cluster synthesis and atomic structure determination. Both neutral and ionic nanoclusters can be investigated with proper care of the helium background.

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22

Rossich Molina, Estefania, and Tamar Stein. "The Effect of Cluster Size on the Intra-Cluster Ionic Polymerization Process." Molecules 26, no. 16 (August 7, 2021): 4782. http://dx.doi.org/10.3390/molecules26164782.

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Polyaromatic hydrocarbons (PAHs) are widespread in the interstellar medium (ISM). The abundance and relevance of PAHs call for a clear understanding of their formation mechanisms, which, to date, have not been completely deciphered. Of particular interest is the formation of benzene, the basic building block of PAHs. It has been shown that the ionization of neutral clusters can lead to an intra-cluster ionic polymerization process that results in molecular growth. Ab-initio molecular dynamics (AIMD) studies in clusters consisting of 3–6 units of acetylene modeling ionization events under ISM conditions have shown maximum aggregation of three acetylene molecules forming bonded C6H6+ species; the larger the number of acetylene molecules, the higher the production of C6H6+. These results lead to the question of whether clusters larger than those studied thus far promote aggregation beyond three acetylene units and whether larger clusters can result in higher C6H6+ production. In this study, we report results from AIMD simulations modeling the ionization of 10 and 20 acetylene clusters. The simulations show aggregation of up to four acetylene units producing bonded C8H8+. Interestingly, C8H8+ bicyclic species were identified, setting a precedent for their astrochemical identification. Comparable reactivity rates were shown with 10 and 20 acetylene clusters.

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23

Barat, M., J. C. Brenot, H. Dunet, J. A. Fayeton, and Y. J. Picard. "Collision induced fragmentation of small ionic alkali clusters. III. Heteronuclear clusters." Journal of Chemical Physics 114, no. 1 (2001): 179. http://dx.doi.org/10.1063/1.1329894.

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24

WANG, BAOLIN, DALING SHI, XIAOSHUANG CHEN, GUANGHOU WANG, and JIJUN ZHAO. "FIRST-PRINCIPLES STUDY OF STRUCTURES AND ELECTRONIC PROPERTIES FOR NITRIDE-DOPED ALUMINUM CLUSTERS." International Journal of Modern Physics B 19, no. 15n17 (July 10, 2005): 2380–85. http://dx.doi.org/10.1142/s0217979205031018.

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By using Gaussian98 package at BPW91 6-31g(d,p) level combined a genetic algorithm (GA) simulation, we have studied the lowest energy structural and electronic properties of the Al n N ( n =2-13) clusters. The ground-state structures, the charge transfers from Al to N site, HOMO-LUMO gap and the covalent, ionic and metallic nature with cluster size and atomic structure are investigated. Al 7 N , Al 9 N and Al 12 N cluster is found particularly stable among the Al n N clusters.

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25

Chaban, Vitaly V., and Eudes Eterno Fileti. "Ionic Clusters vs Shear Viscosity in Aqueous Amino Acid Ionic Liquids." Journal of Physical Chemistry B 119, no. 9 (February 24, 2015): 3824–28. http://dx.doi.org/10.1021/acs.jpcb.5b00392.

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26

Roese, Stefanie, Alexander Kononov, Janis Timoshenko, Anatoly I. Frenkel, and Heinz Hövel. "Cluster Assemblies Produced by Aggregation of Preformed Ag Clusters in Ionic Liquids." Langmuir 34, no. 16 (March 22, 2018): 4811–19. http://dx.doi.org/10.1021/acs.langmuir.7b03984.

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27

Fournier, René, Shaima Zamiruddin, and Min Zhang. "Competition between mixing and segregation in bimetallic AgnRbn clusters (n = 2–10),." Canadian Journal of Chemistry 87, no. 7 (July 2009): 1013–21. http://dx.doi.org/10.1139/v09-065.

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We found the minimum-energy structures of AgnRbn (n = 2–10) clusters by a combination of density functional theory (DFT) and taboo search global optimization. The global minimum geometry is mixed for n ≤ 4 and segregated, with a core-shell arrangement, for n > 4. There is a change in the nature of the bonding, from ionic to metallic, between n = 4 and n = 5. Although metallic bonding dominates at n > 4, large atomic charges (in the order of ±0.5) persist. These atomic charges (negative on the interior Ag atoms, positive on the surface Rb atoms) make AgnRbn clusters analogous to Zintl compounds and could prevent them from coalescing. This makes them intriguing potential building blocks for cluster-assembled materials. Ag4Rb4 is relatively stable compared with other AgnRbn clusters; it has a nearly cubic shape, a large HOMO–LUMO gap (2 eV), and a highly ionic character with atomic charges equal to roughly ±1 au.

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28

Deng, Haiqiang, Pekka Peljo, Xinjian Huang, Evgeny Smirnov, Sujoy Sarkar, Sunny Maye, Hubert H. Girault, and Daniel Mandler. "Ionosomes: Observation of Ionic Bilayer Water Clusters." Journal of the American Chemical Society 143, no. 20 (May 12, 2021): 7671–80. http://dx.doi.org/10.1021/jacs.0c12250.

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29

Akdeniz, Z., Z. Çiçek, A. Karaman, G. Pastore, and M. P. Tosi. "Ionic Interactions in Alkali -Aluminium Tetrafluoride Clusters." Zeitschrift für Naturforschung A 54, no. 10-11 (November 1, 1999): 570–74. http://dx.doi.org/10.1515/zna-1999-10-1102.

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Complex anion structures ((AlF4)-, (AlF5)2- and (AIF6)3-) coexist in liquid mixtures of alu-minium trifluoride and alkali fluorides in composition-dependent relative concentrations and are known to interact with the alkali counterions. We present a comparative study of the static and vibrational structures of MA1F4 molecules (with M = any alkali), with the aim of developing and testing a refined model of the ionic interactions for applications to the M-Al fluoride mixtures. We find that, whereas an edge-bridged coordination is strongly favoured for Li in LiAlF4 , edge-bridging and face-bridging of the alkali ion become energetically equivalent as one moves from Na to the heavier alkalis. This result is sensitive to the inclusion of alkali polarizability and may be interpreted as implying (for M = K, Rb or Cs) almost free relative rotations of the M+ and (AlF4)- partners at temperatures of relevance to experiment. The consistency of such a viewpoint with electron diffraction data on vapours and with Raman spectra on melts is discussed.

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30

Ma, Z., S. R. Coon, W. F. Calaway, M. J. Pellin, D. M. Gruen, and E. I. von Nagy‐Felsobuki. "Sputtering of neutral and ionic indium clusters." Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films 12, no. 4 (July 1994): 2425–30. http://dx.doi.org/10.1116/1.579185.

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31

D'Auria, Raffaella, and Richard P. Turco. "Ionic clusters in the polar winter stratosphere." Geophysical Research Letters 28, no. 20 (October 15, 2001): 3871–74. http://dx.doi.org/10.1029/2001gl012920.

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32

Reinhard, P. G., J. Babst, B. Fischer, C. Kohl, F. Calvayrac, E. Suraud, T. Hirschmann, and M. Brack. "Ionic and electronic structure of metal clusters." Zeitschrift f�r Physik D Atoms, Molecules and Clusters 40, no. 1-4 (May 1, 1997): 314–16. http://dx.doi.org/10.1007/s004600050216.

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33

Bieske, E. J., and J. P. Maier. "Spectroscopic studies of ionic complexes and clusters." Chemical Reviews 93, no. 8 (December 1993): 2603–21. http://dx.doi.org/10.1021/cr00024a002.

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34

Gajek, Z., and J. Mulak. "Steven's orbital reduction factor in ionic clusters." Journal of Magnetism and Magnetic Materials 53, no. 1-2 (November 1985): 63–70. http://dx.doi.org/10.1016/0304-8853(85)90130-1.

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35

Sebastianelli, F., E. Yurtsever, and F. A. Gianturco. "Modelling ionic nucleation in small neon clusters." International Journal of Mass Spectrometry 220, no. 2 (October 2002): 193–209. http://dx.doi.org/10.1016/s1387-3806(02)00683-8.

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36

Aguilar, J. G., A. Ma�anes, F. Duque, M. J. L�pez, M. P. I�iguez, and J. A. Alonso. "Ionic vibrational breathing mode of metallic clusters." International Journal of Quantum Chemistry 61, no. 4 (1997): 613–26. http://dx.doi.org/10.1002/(sici)1097-461x(1997)61:4<613::aid-qua2>3.0.co;2-z.

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37

Kung, C. Y., Richard A. Kennedy, David A. Dolson, and Terry A. Miller. "Ionic clusters grown from isolated ion seeds." Chemical Physics Letters 145, no. 5 (April 1988): 455–60. http://dx.doi.org/10.1016/0009-2614(88)80208-2.

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38

Hogan, Christopher J., and Juan Fernandez de la Mora. "Ion-pair evaporation from ionic liquid clusters." Journal of the American Society for Mass Spectrometry 21, no. 8 (August 2010): 1382–86. http://dx.doi.org/10.1016/j.jasms.2010.03.044.

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39

Bokes, P., I. ?tich, and L. Mitas. "Electron correlation effects in ionic hydrogen clusters." International Journal of Quantum Chemistry 83, no. 2 (2001): 86–95. http://dx.doi.org/10.1002/qua.1061.

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40

Dutta, Abhijit, and Paritosh Mondal. "Structural evolution, electronic and magnetic manners of small rhodium Rhn+/− (n = 2–8) clusters: a detailed density functional theory study." RSC Advances 6, no. 9 (2016): 6946–59. http://dx.doi.org/10.1039/c5ra21600a.

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We have evaluated the stable electronic structure and magnetic properties of all neutral and ionic Rh_n (n = 2–8) clusters using density functional theory. This study reveals that Rh₄ is the magic cluster based on the calculated reactivity parameters.

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41

DOUDNA, C. M., J. F. HUND, and M. F. BERTINO. "SYNTHESIS OF NANOMETER-SIZED (BI)METALLIC CLUSTERS WITH A NUCLEAR REACTOR." International Journal of Modern Physics B 15, no. 24n25 (October 10, 2001): 3302–7. http://dx.doi.org/10.1142/s021797920100766x.

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Mono- and heteronuclear clusters were synthesized by irradiating with gamma rays from a nuclear reactor aqueous solutions containing ionic precursors. Ag, Au/Ag and Ag/Pd clusters were produced and characterized by optical absorption and transmission electron microscopy measurements. Electron diffraction measurements show that the clusters have a crystalline fcc structure. Ag and Au/Ag clusters have a lattice parameter which coincides with the bulk. In the case of Ag/Pd clusters, a homogeneous alloy is formed whose lattice parameter closely follows Vegard's law. The cluster size distribution is in the nanometer range, although coalescence processes lead often to large aggregates. Optical absorption spectra are in agreement with previously reported results, when the presence of large aggregates is taken into account.

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42

ITO, MAKOTO. "ASYMMETRIC CLUSTERS IN EVEN Be ISOTOPES." Modern Physics Letters A 25, no. 21n23 (July 30, 2010): 1862–65. http://dx.doi.org/10.1142/s0217732310000502.

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The generalized two-center cluster model (GTCM), which can treat various single particle configurations in general two center systems, is applied to light neutron-rich systems, Be isotopes (α+α+ X N). We discuss the change of the neutrons' configuration around two α-cores as a variation of an excitation energy. We show that the asymmetric clusters, which correspond to the atomic or ionic configurations, appear in the unbound region above the α particle-decay threshold systematically.

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43

Zhang, Su-Yun, Zdravko Kochovski, Hui-Chun Lee, Yan Lu, Hemin Zhang, Jie Zhang, Jian-Ke Sun, and Jiayin Yuan. "Ionic organic cage-encapsulating phase-transferable metal clusters." Chemical Science 10, no. 5 (2019): 1450–56. http://dx.doi.org/10.1039/c8sc04375b.

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44

PACHECO, J. M., W. EKARDT, and W. D. SCHÖNE. "REINTRODUCING THE IONIC STRUCTURE IN THE JELLIUM MODEL FOR METAL CLUSTERS: PSEUDOPOTENTIAL PERTURBATION THEORY." Surface Review and Letters 03, no. 01 (February 1996): 313–16. http://dx.doi.org/10.1142/s0218625x96000577.

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Ionic structure effects in small sodium clusters are studied via second-order pseudopotential perturbation theory. It is found that this formulation not only leads to the same ionic structures found via ab-initio Car–Parrinello structure optimization, but also to a substantial improvement in the overall description of the optical response of the clusters.

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45

Chen, Guojian, Wei Hou, Jing Li, Xiaochen Wang, Yu Zhou, and Jun Wang. "Ionic self-assembly affords mesoporous ionic networks by crosslinking linear polyviologens with polyoxometalate clusters." Dalton Transactions 45, no. 11 (2016): 4504–8. http://dx.doi.org/10.1039/c6dt00070c.

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Polyoxometalate-crosslinked mesoporous ionic networks were constructed by ionic self-assembly of linear cationic polyviologens with PMoV clusters, acting as highly efficient heterogeneous catalysts for the conversion of HMF to DFF with ambient O₂.

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46

VIALLON, J., C. BORDAS, J. CHEVALEYRE, M. A. LEBAULT, CH ELLERT, S. DOBOSZ, M. LEZIUS, et al. "Highly charged ions from rare gas and metal clusters in intense laser fields." Laser and Particle Beams 18, no. 3 (July 2000): 513–18. http://dx.doi.org/10.1017/s0263034600183235.

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Rare gas or lead clusters of several hundreds to many thousands of atoms per cluster were irradiated by intense laser pulses producing peak intensities up to 1017W/cm2. Fast, highly charged fragment ions were observed by means of standard TOF mass spectrometry as well as a magnetic deflection TOF device (MDTOF). Charge states of up to Xe30+ or Pb18+ were detected with maximum kinetic energies reaching far beyond 100 keV for Xe. A strong dependence of the charging and heating process on the laser pulse duration was found. While the resulting ionic fragment spectra are qualitatively similar for rare gas and lead clusters, the kinetic energies for the metal clusters seem to be significantly lower.

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47

Barbatti, M., and M. A. C. Nascimento. "On the formation mechanisms of hydrogen ionic clusters." Brazilian Journal of Physics 33, no. 4 (December 2003): 792–97. http://dx.doi.org/10.1590/s0103-97332003000400032.

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48

Weber, Kevin H., and Fu-Ming Tao. "Ionic Dissociation of Perchloric Acid in Microsolvated Clusters." Journal of Physical Chemistry A 105, no. 7 (February 2001): 1208–13. http://dx.doi.org/10.1021/jp002932v.

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49

Barat, M., J. C. Brenot, J. A. Fayeton, and Y. J. Picard. "Collision induced fragmentation of small ionic argon clusters." Journal of Chemical Physics 117, no. 4 (July 22, 2002): 1497–506. http://dx.doi.org/10.1063/1.1485067.

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50

Jeung, Gwang-Hi. "Multiple Ionic-Covalent Couplings in Molecules and Clusters." Chinese Journal of Chemical Physics 22, no. 2 (April 2009): 187–90. http://dx.doi.org/10.1088/1674-0068/22/02/187-190.

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Journal articles on the topic 'Ionic clusters'

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