Energy transfer in rare gas collisions with hydroxyl- and methyl-terminated self-assembled monolayers

Shuler, Shelby F.; Davis, Gwen M.; Morris, John R.

doi:10.1063/1.1480859

Cited by 60 publications

(60 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is not attributed to an increase in the surface stiffness due to hydrogen bonding between the -OH groups, since the -OH and -CH 3 terminal groups are thought to randomly distribute when forming the surface and to not aggregate. An increase in surface stiffness and diminished energy transfer to the surface, has been observed for collisions of Ar atoms with surfaces terminated with hydrogen bonding functional groups [23][24][25].…”

Section: Discussionmentioning

confidence: 94%

Effects of projectile orientation and surface impact site on the efficiency of projectile excitation in surface-induced dissociation

Rahaman

Zhou

Hase

2006

International Journal of Mass Spectrometry

View full text Add to dashboard Cite

Section: Discussionmentioning

confidence: 94%

Effects of projectile orientation and surface impact site on the efficiency of projectile excitation in surface-induced dissociation

Rahaman

Zhou

Hase

2006

International Journal of Mass Spectrometry

View full text Add to dashboard Cite

“…Analysis of scattering angular and TOF distributions and their dependence on initial conditions, for example initial translational energy, can be used to distinguish between trapping/desorption and direct scattering events [180][181][182] an approach that has recently been extended to atomic and molecular scattering from liquid [183][184][185][186][187] as well as selfassembled monolayer surfaces [188][189][190][191][192][193][194][195]. In similar way, Eley-Rideal reactive events can be immediately distinguished from those that follow a Langmuir-Hinshelwood mechanism [196][197][198][199][200][201][202].…”

Section: Molecular-beam Surface Scatteringmentioning

confidence: 99%

Energy transfer and chemical dynamics at solid surfaces: The special role of charge transfer

Wodtke

Matsiev

Auerbach

2008

Progress in Surface Science

171

161

View full text Add to dashboard Cite

Molecular energy transfer processes at solid surfaces are profoundly important, influencing trapping, desorption, diffusion, and reactivity; in short, all of the elementary steps needed for surface chemistry to take place. In this paper we review recent progress in our understanding of energy transfer at surfaces with a particular emphasis on those phenomena, which are peculiar to solids with delocalized electronic structure, e.g. electronically nonadiabatic energy transfer. This area of study represents an area requiring significant extensions of our theoretical understanding, which is largely based on density functional theory. This review provides an overview of some of the experimental and theoretical tools presently being used in this field and a description of several illustrative examples of work that have helped to shape our understanding.

show abstract

“…Self-assembled monolayers (SAMs) on metal surfaces are widely used in nanoscience and nanotechnology. 1 Experimental 2-27 and computational simulation studies [28][29][30][31][32][33][34][35][36][37][38][39][40][41] have probed the dynamics of energy transfer, 2,3,16,[18][19][20][21][22][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41] surface adsorption, 18,22,[28][29][30][34][35][36]41 and thermal accommodation [4][5]…”

Section: Introductionmentioning

confidence: 99%

Mechanistic details of energy transfer and soft landing in ala₂-H⁺ collisions with a F-SAM surface

Pratihar

Kim

Kohale

et al. 2015

Phys. Chem. Chem. Phys.

View full text Add to dashboard Cite

Previous chemical dynamics simulations (Phys. Chem. Chem. Phys., 2014, 16, 23769-23778) were analyzed to delineate atomistic details for collision of N-protonated dialanine (ala2-H(+)) with a C8 perfluorinated self-assembled monolayer (F-SAM) surface. Initial collision energies Ei of 5-70 eV and incident angles θi of 0° and 45°, with the surface normal, were considered. Four trajectory types were identified: (1) direct scattering; (2) temporary sticking/physisorption on top of the surface; (3) temporary penetration of the surface with additional physisorption on the surface; and (4) trapping on/in the surface, by physisorption or surface penetration, when the trajectory is terminated. Direct scattering increases from 12 to 100% as Ei is increased from 5 to 70 eV. For the direct scattering at 70 eV, at least one ala2-H(+) heavy atom penetrated the surface for all of the trajectories. For ∼33% of the trajectories all eleven of the ala2-H(+) heavy atoms penetrated the F-SAM at the time of deepest penetration. The importance of trapping decreased with increase in Ei, decreasing from 84 to 0% with Ei increase from 5 to 70 eV at θi = 0°. Somewhat surprisingly, the collisional energy transfers to the F-SAM surface and ala2-H(+) are overall insensitive to the trajectory type. The energy transfer to ala2-H(+) is primarily to vibration, with the transfer to rotation ∼10% or less. Adsorption and then trapping of ala2-H(+) is primarily a multi-step process, and the following five trapping mechanisms were identified: (i) physisorption-penetration-physisorption (phys-pen-phys); (ii) penetration-physisorption-penetration (pen-phys-pen); (iii) penetration-physisorption (pen-phys); (iv) physisorption-penetration (phys-pen); and (v) only physisorption (phys). For Ei = 5 eV, the pen-phys-pen, pen-phys, phys-pen, and phys trapping mechanisms have similar probabilities. For 13.5 eV, the phys-pen mechanism, important at 5 eV, is unimportant. The radius of gyration of ala2-H(+) was calculated once it is trapped on/in the F-SAM surface and trapping decreases the ion's compactness, in part by breaking hydrogen bonds. The ala2-H(+) + F-SAM simulations are compared with the penetration and trapping dynamics found in previous simulations of projectile + organic surface collisions.

show abstract

Energy transfer in rare gas collisions with hydroxyl- and methyl-terminated self-assembled monolayers

Abstract: Articles you may be interested inCollision-induced annealing of octanethiol self-assembled monolayers by high-kinetic-energy xenon atoms Structural changes of an octanethiol monolayer via hyperthermal rare-gas collisions Energy transfer in rare gas collisions with self-assembled monolayers

Cited by 60 publications

References 26 publications

Effects of projectile orientation and surface impact site on the efficiency of projectile excitation in surface-induced dissociation

Effects of projectile orientation and surface impact site on the efficiency of projectile excitation in surface-induced dissociation

Energy transfer and chemical dynamics at solid surfaces: The special role of charge transfer

Mechanistic details of energy transfer and soft landing in ala₂-H⁺ collisions with a F-SAM surface

Contact Info

Product

Resources

About

Energy transfer in rare gas collisions with hydroxyl- and methyl-terminated self-assembled monolayers

Cited by 60 publications

References 26 publications

Effects of projectile orientation and surface impact site on the efficiency of projectile excitation in surface-induced dissociation

Effects of projectile orientation and surface impact site on the efficiency of projectile excitation in surface-induced dissociation

Energy transfer and chemical dynamics at solid surfaces: The special role of charge transfer

Mechanistic details of energy transfer and soft landing in ala2-H+ collisions with a F-SAM surface

Contact Info

Product

Resources

About

Mechanistic details of energy transfer and soft landing in ala₂-H⁺ collisions with a F-SAM surface