Threshold ionization spectroscopic investigation of supersonic jet-cooled, laser-desorbed Tryptophan

Mehran Taherkhani; Antonio Armentano; Jiri Cern; Klaus Muller-Dethlefs

doi:10.1016/j.cplett.2016.05.061

Threshold ionization spectroscopic investigation of supersonic jet-cooled, laser-desorbed Tryptophan

Mehran Taherkhani, Antonio Armentano, Jiri Cern, Klaus Muller-Dethlefs

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Abstract

Tryptophan (Trp) was studied by two-colour Photoionization Efficiency (PIE) and Mass Analysed Threshold Ionization (MATI) spectroscopy using a laser desorption apparatus. Conformer A of Trp was excited into the S1 state (34,878 cm−1) and the second laser was scanned around the D0 cation ground and the D1 excited state. No ionization signal into the D0 state could be found, but a clear threshold was observed for the D1 state with an ionization energy of 66,704 ± 3 cm−1 (8.27 eV). This observation is explained in terms of the electronic configurations of the S1 and cationic states.

Original language	Undefined
Pages (from-to)	142-147
Number of pages	6
Journal	Chemical Physics Letters
Volume	657
Early online date	27 May 2016
DOIs	https://doi.org/10.1016/j.cplett.2016.05.061
Publication status	Published - 16 Jul 2016

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10.1016/j.cplett.2016.05.061

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title = "Threshold ionization spectroscopic investigation of supersonic jet-cooled, laser-desorbed Tryptophan",

abstract = "Tryptophan (Trp) was studied by two-colour Photoionization Efficiency (PIE) and Mass Analysed Threshold Ionization (MATI) spectroscopy using a laser desorption apparatus. Conformer A of Trp was excited into the S1 state (34,878 cm−1) and the second laser was scanned around the D0 cation ground and the D1 excited state. No ionization signal into the D0 state could be found, but a clear threshold was observed for the D1 state with an ionization energy of 66,704 ± 3 cm−1 (8.27 eV). This observation is explained in terms of the electronic configurations of the S1 and cationic states.",

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T1 - Threshold ionization spectroscopic investigation of supersonic jet-cooled, laser-desorbed Tryptophan

AU - Taherkhani, Mehran

AU - Armentano, Antonio

AU - Cern, Jiri

AU - Muller-Dethlefs, Klaus

PY - 2016/7/16

Y1 - 2016/7/16

N2 - Tryptophan (Trp) was studied by two-colour Photoionization Efficiency (PIE) and Mass Analysed Threshold Ionization (MATI) spectroscopy using a laser desorption apparatus. Conformer A of Trp was excited into the S1 state (34,878 cm−1) and the second laser was scanned around the D0 cation ground and the D1 excited state. No ionization signal into the D0 state could be found, but a clear threshold was observed for the D1 state with an ionization energy of 66,704 ± 3 cm−1 (8.27 eV). This observation is explained in terms of the electronic configurations of the S1 and cationic states.

AB - Tryptophan (Trp) was studied by two-colour Photoionization Efficiency (PIE) and Mass Analysed Threshold Ionization (MATI) spectroscopy using a laser desorption apparatus. Conformer A of Trp was excited into the S1 state (34,878 cm−1) and the second laser was scanned around the D0 cation ground and the D1 excited state. No ionization signal into the D0 state could be found, but a clear threshold was observed for the D1 state with an ionization energy of 66,704 ± 3 cm−1 (8.27 eV). This observation is explained in terms of the electronic configurations of the S1 and cationic states.

U2 - 10.1016/j.cplett.2016.05.061

DO - 10.1016/j.cplett.2016.05.061

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SN - 1873-4448

VL - 657

SP - 142

EP - 147

JO - Chemical Physics Letters

JF - Chemical Physics Letters

ER -