Tabletop imaging using 266nm femtosecond laser pulses, for characterization of structural evolution in, single molecule, chemical reactions
[摘要] We have demonstrated a generally applicable tabletop approach utilizing a 266nm femtosecond laser pulse pump, 800nm pulse probe, coupled with Coulomb explosion imaging (CEI). We have investigated two simple chemical reactions in C2H2+simultaneously: proton transfer and C=C bond-breaking, triggered by multiphoton ionization to excited states. Too and fro proton migration results are in excellent agreement with new ab initio trajectory simulations which predict isomerization timescales and pathways.
[发布日期] [发布机构] Institut National de la Recherche Scientifique, Centre Énergie Matériaux et Télécommunications, 1650 Boulevard Lionel-Boulet, Varennes; Qc; J3X1S2, Canada^1;Department of Physics and Astronomy, University of Waterloo, 200 University Avenue West, Waterloo; ON; N2L 3G1, Canada^2;National Research Council of Canada, 100 Sussex Dr., Ottawa; ON; K1A 0R6, Canada^3;Department of Physics, University of Ottawa, 150 Louis Pasteur, Ottawa; ON; K1N 6N5, Canada^4;Laboratoir de Chimie Théorique, Universitéde Sherbrooke, Qc, Canada^5
[效力级别] [学科分类]
[关键词] Bond-breaking;Coulomb explosion imaging;Multiphoton ionization;Proton migration;Pulse-probe;Single molecule;Structural evolution;Trajectory simulation [时效性]
