TY - JOUR
T1 - Energy dependence of photodissociation dynamics of trimethylamine over the S2 and S1 excited states
AU - Onitsuka, Yuuki
AU - Kadowaki, Yuki
AU - Tamakubo, Atsuya
AU - Yamasaki, Katsuyoshi
AU - Kohguchi, Hiroshi
N1 - Funding Information:
The authors are indebted to Japan Society for the Promotion of Science (JSPS) for financial support for this study (KAKENHI Grant No. 15KT0065 ).
Publisher Copyright:
© 2018 Elsevier B.V.
PY - 2019/2
Y1 - 2019/2
N2 - The photodissociation dynamics of trimethylamine, N(CH3)3, was studied using ion-imaging. The photolysis wavelength was scanned over the 200–236 nm region, where the S1(3s) and S2(3p) states were excited with varying relative populations. The dissociation threshold of C–N bond fission was found at 42,500 cm−1, which is located between the S1(3s) and S2(3p) origins. The final-state distributions were qualitatively insensitive to the photoinitiated states, indicating a dissociation mechanism following ultrafast electronic dynamics. The CH3 photofragments showed dual ring-like scattering distributions, which were ascribed to branching to the CH3 + N(CH3)2 (A∼2A1) and CH3 + N(CH3)2 (X∼2B1) pathways.
AB - The photodissociation dynamics of trimethylamine, N(CH3)3, was studied using ion-imaging. The photolysis wavelength was scanned over the 200–236 nm region, where the S1(3s) and S2(3p) states were excited with varying relative populations. The dissociation threshold of C–N bond fission was found at 42,500 cm−1, which is located between the S1(3s) and S2(3p) origins. The final-state distributions were qualitatively insensitive to the photoinitiated states, indicating a dissociation mechanism following ultrafast electronic dynamics. The CH3 photofragments showed dual ring-like scattering distributions, which were ascribed to branching to the CH3 + N(CH3)2 (A∼2A1) and CH3 + N(CH3)2 (X∼2B1) pathways.
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U2 - 10.1016/j.cplett.2018.11.062
DO - 10.1016/j.cplett.2018.11.062
M3 - Article
AN - SCOPUS:85058930124
SN - 0009-2614
VL - 716
SP - 28
EP - 34
JO - Chemical Physics Letters
JF - Chemical Physics Letters
ER -