Coherent Vibration and Femtosecond Dynamics of the Platinum Complex Oligomers upon Intermolecular Bond Formation in the Excited State

Munetaka Iwamura*, Airi Fukui, Koichi Nozaki, Hikaru Kuramochi, Satoshi Takeuchi, Tahei Tahara*

*この論文の責任著者

研究成果: ジャーナルへの寄稿学術論文査読

17 被引用数 (Scopus)

抄録

Femtosecond time-resolved absorption and picosecond time-resolved emission measurements were carried out for highly concentrated aqueous solutions of K2[Pt(CN)4] to investigate excited-state dynamics of the [Pt(CN)42−] oligomers formed with metallophilic interactions. Time-resolved absorption spectra exhibit complicated dynamics that are represented with five time constants. Among them, the 90-ps and 400-ps dynamics were assigned to the S1 → T1 intersystem crossing of the trimer and tetramer coexisting in the solution by comparison with the fluorescence decays. Clear oscillations of transient absorption were observed in the first few picoseconds, and the frequency-detected-wavelength 2D analysis revealed that the 135-cm−1 and 65-cm−1 oscillations arise from the Pt–Pt stretch motions of the S1 trimer and S1 tetramer, respectively. The obtained time-resolved spectroscopic data provide a clear view of the excited-state dynamics of the [Pt(CN)42−] oligomers in the femto-/picosecond time region.

本文言語英語
ページ(範囲)23154-23161
ページ数8
ジャーナルAngewandte Chemie - International Edition
59
51
DOI
出版ステータス出版済み - 2020/12/14

ASJC Scopus 主題領域

  • 触媒
  • 化学一般

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