Ionization of Water Clusters Mediated by Exciton Energy Transfer from Argon Clusters

Golan, Amir; Ahmed, Musahid

doi:10.1021/jz2016654

Cited by 45 publications

(45 citation statements)

References 46 publications

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“…This observation is independent of the ionization method, whether electron-or photoionization is implemented [26]. The 20 non-protonated (H 2 O) + n ions were observed upon ionization of water clusters solvated with rare gas atoms [20,21,27,28,29]. Nevertheless, an infrared spectroscopy of the water clusters showed that the non-protonated clusters have the structure H 3 O + · · ·OH·, i.e., the proton transfer still takes place [30,31].…”

Section: Introductionmentioning

confidence: 90%

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Extensive water cluster fragmentation after low energy electron ionization

Lengyel

Pysanenko

Poterya

et al. 2014

Chemical Physics Letters

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Section: Introductionmentioning

confidence: 90%

“…In many laboratory studies water clusters are detected by mass spectrometric methods. Therefore the 10 cluster ionization is of prime importance and was investigated by various means [15,16,17,18,19,20,21].…”

Section: Introductionmentioning

confidence: 99%

Extensive water cluster fragmentation after low energy electron ionization

Lengyel

Pysanenko

Poterya

et al. 2014

Chemical Physics Letters

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“…13 Several groups have studied ground state cationic water clusters (H 2 O) + n in experiment. [14][15][16][17] Studying these clusters in experiment is challenging since the unprotonated cluster ions are formed in a highly excited vibrational state. 18,19 This leads to fragmentation of the water clusters on an ultrafast time scale to give rise to protonated species.…”

Section: Introductionmentioning

confidence: 99%

“…18,19 This leads to fragmentation of the water clusters on an ultrafast time scale to give rise to protonated species. 20 However, several studies have measured unprotonated cationic water clusters, [14][15][16][17] and recently the infrared spectroscopy of size selected unprotonated cationic water clusters was reported. 16 In these clusters, there is the possibility of several distinct structural motifs, which are illustrated in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

Structure and Bonding in Ionized Water Clusters

Besley

2013

J. Phys. Chem. A

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The structure and bonding in ionized water clusters, (H 2 O) + n (n = 3 9), has been studied using the basin hopping search algorithm in combination with quantum chemical calculations.Initially candidate low energy isomers are generated using basin hopping in conjunction with density functional theory. Subsequently, the structures and energies are refined using second order Møller-Plesset perturbation theory and coupled cluster theory, respectively. The lowest energy isomers are found to involve proton transfer to give H 3 O + and a OH radical, which are more stable than isomers containing the hemibonded hydrazine-like fragment (H 2 O-OH 2 ), with the calculated infrared spectra consistent with experimental data. For (H 2 O) + 9 the observation of a new structural motif comprising proton transfer to form H 3 O + and OH, but with the OH radical involved in hemibonding to another water molecule is discussed.

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“…Many papers have been published on water clusters, mainly aiming for the possibility of using them as a vehicle for systematically studying molecular properties of water [4][5][6][7][8][9]. Nevertheless, not all is known about the different-size water clusters formation and ionization.…”

Section: Introductionmentioning

confidence: 99%

Insights on Clusters Formation Mechanism by Time of Flight Mass Spectrometry. 1. The Case of Ethanol–Water Clusters

Apicella

Passaro

2015

J. Am. Soc. Mass Spectrom.

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Abstract. In the present work, water clusters with the addition of an electrophilic molecule such as ethanol have been studied by time of flight mass spectrometry (TOFMS). Mass distributions of molecular clusters of ethanol, water, and ethanolwater mixed clusters were obtained by two different ionization methods: electron ionization (EI) and picosecond laser photo-ionization (PI) at a wavelength of 355 nm. It was shown that short pulse laser ionization increases the signal intensity and promotes the extension of the detected mass range of the clusters in comparison with EI. Much larger clusters were detected in our experiments with respect to the current literature. The autocorrelation function (AF) was introduced in the analysis of the composition of the water clusters in terms of fundamental periodicities for obtaining information on clusters formation mechanisms. Besides, it was found that ethanol molecules are capable of substitutional interaction with hydrogen-bonded water clusters in ethanol-water binary mixtures but the self-association of ethanol was the dominant process. Moreover, the increase of ethanol concentration promotes both the formation of hydrated ethanol clusters and the self-association of ethanol clusters in ethanol-water binary mixtures. The formation of water-rich clusters and subsequent metastable fragmentation were found to be the dominant processes determining the water-rich cluster distribution, irrespective of the ionization process, while the ionization process significantly affects the ethanol-rich cluster distribution.

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Ionization of Water Clusters Mediated by Exciton Energy Transfer from Argon Clusters

Cited by 45 publications

References 46 publications

Extensive water cluster fragmentation after low energy electron ionization

Extensive water cluster fragmentation after low energy electron ionization

Structure and Bonding in Ionized Water Clusters

Insights on Clusters Formation Mechanism by Time of Flight Mass Spectrometry. 1. The Case of Ethanol–Water Clusters

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