Role of adsorbate structure in the dynamics of surface photodissociation

D. Howard Fairbrother; Victor P. Holbert; Kimberly A. Briggman; Peter C. Stair; Eric Weitz

Role of adsorbate structure in the dynamics of surface photodissociation

D. Howard Fairbrother^*, Victor P. Holbert, Kimberly A. Briggman, Peter C. Stair, Eric Weitz

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Scopus citations

Abstract

Photofragments produced following 257 nm irradiation of physiosorbed methyl iodide on MgO(100) and TiO ₂(110) have been studied using resonantly enhanced multiphoton ionization coupled with time-of-flight mass spectrometry. The observed signal is associated with photofragment production from methyl iodide chromophores present in the near surface region. The dependence of the velocity distribution of methyl photofragments on ejection angle and polarization of the photolysis beam indicates that the multilayer film is composed primarily of an anti-parallel arrangement of methyl iodide molecules whose C-I bonds are aligned close to the surface normal. At submonolayer coverage on TiO ₂ methyl iodide is predominantly in a parallel orientation with the iodine close to the surface and the methyl group pointing away from the surface.

Original language	English (US)
Title of host publication	Proceedings of SPIE - The International Society for Optical Engineering
Pages	248-259
Number of pages	12
State	Published - 1995
Event	Laser Techniques for Surface Science II - San Diego, CA, USA Duration: Jul 12 1995 → Jul 14 1995

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	2547
ISSN (Print)	0277-786X

Other

Other	Laser Techniques for Surface Science II
City	San Diego, CA, USA
Period	7/12/95 → 7/14/95

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

Cite this

@inproceedings{2e4ea4d75fbb4325a4149c5738afdeed,

title = "Role of adsorbate structure in the dynamics of surface photodissociation",

abstract = "Photofragments produced following 257 nm irradiation of physiosorbed methyl iodide on MgO(100) and TiO 2(110) have been studied using resonantly enhanced multiphoton ionization coupled with time-of-flight mass spectrometry. The observed signal is associated with photofragment production from methyl iodide chromophores present in the near surface region. The dependence of the velocity distribution of methyl photofragments on ejection angle and polarization of the photolysis beam indicates that the multilayer film is composed primarily of an anti-parallel arrangement of methyl iodide molecules whose C-I bonds are aligned close to the surface normal. At submonolayer coverage on TiO 2 methyl iodide is predominantly in a parallel orientation with the iodine close to the surface and the methyl group pointing away from the surface.",

author = "Fairbrother, {D. Howard} and Holbert, {Victor P.} and Briggman, {Kimberly A.} and Stair, {Peter C.} and Eric Weitz",

year = "1995",

language = "English (US)",

isbn = "0819419060",

series = "Proceedings of SPIE - The International Society for Optical Engineering",

pages = "248--259",

booktitle = "Proceedings of SPIE - The International Society for Optical Engineering",

note = "Laser Techniques for Surface Science II ; Conference date: 12-07-1995 Through 14-07-1995",

}

Fairbrother, DH, Holbert, VP, Briggman, KA, Stair, PC & Weitz, E 1995, Role of adsorbate structure in the dynamics of surface photodissociation. in Proceedings of SPIE - The International Society for Optical Engineering. Proceedings of SPIE - The International Society for Optical Engineering, vol. 2547, pp. 248-259, Laser Techniques for Surface Science II, San Diego, CA, USA, 7/12/95.

Role of adsorbate structure in the dynamics of surface photodissociation. / Fairbrother, D. Howard; Holbert, Victor P.; Briggman, Kimberly A. et al.
Proceedings of SPIE - The International Society for Optical Engineering. 1995. p. 248-259 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 2547).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Role of adsorbate structure in the dynamics of surface photodissociation

AU - Fairbrother, D. Howard

AU - Holbert, Victor P.

AU - Briggman, Kimberly A.

AU - Stair, Peter C.

AU - Weitz, Eric

PY - 1995

Y1 - 1995

N2 - Photofragments produced following 257 nm irradiation of physiosorbed methyl iodide on MgO(100) and TiO 2(110) have been studied using resonantly enhanced multiphoton ionization coupled with time-of-flight mass spectrometry. The observed signal is associated with photofragment production from methyl iodide chromophores present in the near surface region. The dependence of the velocity distribution of methyl photofragments on ejection angle and polarization of the photolysis beam indicates that the multilayer film is composed primarily of an anti-parallel arrangement of methyl iodide molecules whose C-I bonds are aligned close to the surface normal. At submonolayer coverage on TiO 2 methyl iodide is predominantly in a parallel orientation with the iodine close to the surface and the methyl group pointing away from the surface.

AB - Photofragments produced following 257 nm irradiation of physiosorbed methyl iodide on MgO(100) and TiO 2(110) have been studied using resonantly enhanced multiphoton ionization coupled with time-of-flight mass spectrometry. The observed signal is associated with photofragment production from methyl iodide chromophores present in the near surface region. The dependence of the velocity distribution of methyl photofragments on ejection angle and polarization of the photolysis beam indicates that the multilayer film is composed primarily of an anti-parallel arrangement of methyl iodide molecules whose C-I bonds are aligned close to the surface normal. At submonolayer coverage on TiO 2 methyl iodide is predominantly in a parallel orientation with the iodine close to the surface and the methyl group pointing away from the surface.

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M3 - Conference contribution

AN - SCOPUS:0029514661

SN - 0819419060

SN - 9780819419064

T3 - Proceedings of SPIE - The International Society for Optical Engineering

SP - 248

EP - 259

BT - Proceedings of SPIE - The International Society for Optical Engineering

T2 - Laser Techniques for Surface Science II

Y2 - 12 July 1995 through 14 July 1995

ER -

Role of adsorbate structure in the dynamics of surface photodissociation

Abstract

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ASJC Scopus subject areas

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