10/3 [IGER & RCMS Seminar] Charge Transfer to Solvent Dynamics in Aqueous Solution

■ 講演者名
Emad Flear Aziz教授
■ 所属
■ 紹介
2014年10月3日(金)13:30より、ベルリン自由大学物理学科のEmad Flear Aziz教授をお招きして、IGER & RCMSセミナーを開催します。


We explore the early-time electronic relaxation in aqueous solution exposed to a short UV laser pulse.1 Rather than initiating the charge transfer reaction by resonant photoexcitation of negative ions,1,2 here we extend and present time-resolved photoelectron spectroscopy study the charge-transfer-to-solvent (CTTS) states are populated via electronic excitation above the vacuum level.3 By analyzing the temporal evolution of electron yields from ionization of two transient species, assigned to CTTS and its first excited state, we determine both their ultrafast population and relaxation dynamics. Comparison with resonant-excitation studies shows that the highly excited initial states exhibit similar relaxation characteristics as found for resonant excitation. Implications for structure and dynamical response of the hydration cage are discussed. [1] Bernd Winter, Emad F. Aziz, Niklas Ottosson, Manfred Faubel, Nobuhiro Kosugi, and Ingolf V. Hertel. J. Am. Chem. Soc. 130, 7130 (2008), [2] Emad F. Aziz, Niklas Ottosson, Manfred Faubel, Ingolf V. Hertel, Bernd Winter. Interaction Between Liquid Water and Hydroxide Revealed by Core-Hole De-Excitation. Nature 455, 89 (2008), [3] Alexander Kothe, Martin Wilke, Alexandre Moguilevski, Nicholas Engel, Bernd Winter, Igor Yu. Kiyan and Emad F. Aziz. PCCP. Submitted (2014)

■ ポスター
■ 日時
■ 会場
野依記念物質科学研究館2階 ケミストリーギャラリー
■ 連絡先
菱川明栄 email: hishi@chem.nagoya-u.ac.jp

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