Photochemistry of adsorbed phenyl iodide: Desorption and photofragmentation dynamics

E. Villa; J. A. Dagata; Ming-Chang Lin

doi:10.1063/1.458152

Photochemistry of adsorbed phenyl iodide: Desorption and photofragmentation dynamics

E. Villa^*, J. A. Dagata, Ming-Chang Lin

^*Corresponding author for this work

Department of Applied Chemistry

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

The photodissociation and photodesorption dynamics of iodobenzene adsorbed at 150 K on LiF substrates has been investigated at 222 nm using the time-of-flight/resonance-enhanced multiphoton ionization/mass spectrometry technique. The Maxwell-Boltzmann (MB) translational temperatures (T_B) calculated for the phenyl radical, atomic iodine in the I (²P _3/2) and (²P_1/2) states, and biphenyl were 1200, 1500, and 1050 K, respectively. The desorbed parent molecule (detected by electron ionization) was found to be translationally colder, with T _B≈900 K. Analysis of translational energy distributions indicate that the adsorption-dissociation mechanism of iodobenzene differs significantly from that of the methyl halides.

Original language	English
Pages (from-to)	1407-1412
Number of pages	6
Journal	The Journal of chemical physics
Volume	92
Issue number	2
DOIs	https://doi.org/10.1063/1.458152
State	Published - 1990

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title = "Photochemistry of adsorbed phenyl iodide: Desorption and photofragmentation dynamics",

abstract = "The photodissociation and photodesorption dynamics of iodobenzene adsorbed at 150 K on LiF substrates has been investigated at 222 nm using the time-of-flight/resonance-enhanced multiphoton ionization/mass spectrometry technique. The Maxwell-Boltzmann (MB) translational temperatures (TB) calculated for the phenyl radical, atomic iodine in the I (2P 3/2) and (2P1/2) states, and biphenyl were 1200, 1500, and 1050 K, respectively. The desorbed parent molecule (detected by electron ionization) was found to be translationally colder, with T B≈900 K. Analysis of translational energy distributions indicate that the adsorption-dissociation mechanism of iodobenzene differs significantly from that of the methyl halides.",

author = "E. Villa and Dagata, {J. A.} and Ming-Chang Lin",

year = "1990",

doi = "10.1063/1.458152",

language = "English",

volume = "92",

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journal = "The Journal of chemical physics",

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TY - JOUR

T1 - Photochemistry of adsorbed phenyl iodide

T2 - Desorption and photofragmentation dynamics

AU - Villa, E.

AU - Dagata, J. A.

AU - Lin, Ming-Chang

PY - 1990

Y1 - 1990

N2 - The photodissociation and photodesorption dynamics of iodobenzene adsorbed at 150 K on LiF substrates has been investigated at 222 nm using the time-of-flight/resonance-enhanced multiphoton ionization/mass spectrometry technique. The Maxwell-Boltzmann (MB) translational temperatures (TB) calculated for the phenyl radical, atomic iodine in the I (2P 3/2) and (2P1/2) states, and biphenyl were 1200, 1500, and 1050 K, respectively. The desorbed parent molecule (detected by electron ionization) was found to be translationally colder, with T B≈900 K. Analysis of translational energy distributions indicate that the adsorption-dissociation mechanism of iodobenzene differs significantly from that of the methyl halides.

AB - The photodissociation and photodesorption dynamics of iodobenzene adsorbed at 150 K on LiF substrates has been investigated at 222 nm using the time-of-flight/resonance-enhanced multiphoton ionization/mass spectrometry technique. The Maxwell-Boltzmann (MB) translational temperatures (TB) calculated for the phenyl radical, atomic iodine in the I (2P 3/2) and (2P1/2) states, and biphenyl were 1200, 1500, and 1050 K, respectively. The desorbed parent molecule (detected by electron ionization) was found to be translationally colder, with T B≈900 K. Analysis of translational energy distributions indicate that the adsorption-dissociation mechanism of iodobenzene differs significantly from that of the methyl halides.

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DO - 10.1063/1.458152

M3 - Article

AN - SCOPUS:0042277299

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VL - 92

SP - 1407

EP - 1412

JO - The Journal of chemical physics

JF - The Journal of chemical physics

IS - 2

ER -

Photochemistry of adsorbed phenyl iodide: Desorption and photofragmentation dynamics

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