Ultrafast interfacial proton-coupled electron transfer

Bin Li, Jin Zhao, Ken Onda, Kennath D. Jordan, Jinlong Yang, Hrvoje Petek

研究成果: Contribution to journalArticle査読

185 被引用数 (Scopus)

抄録

The coupling of electron and nuclear motions in ultrafast charge transfer at molecule-semiconductor interfaces is central to many phenomena, including catalysis, photocatalysis, and molecular electronics. By using femtosecond laser excitation, we transferred electrons from a rutile titanium dioxide (110) surface into a CH3OH overlayer state that is 2.3 ± 0.2 electron volts above the Fermi level. The redistributed charge was stabilized within 30 femtoseconds by the inertial motion of substrate ions (polaron formation) and, more slowly, by adsorbate molecules (solvation). According to a pronounced deuterium isotope effect (CH3OD), this motion of heavy atoms transforms the reverse charge transfer from a purely electronic process (nonadiabatic) to a correlated response of electrons and protons.

本文言語英語
ページ(範囲)1436-1440
ページ数5
ジャーナルScience
311
5766
DOI
出版ステータス出版済み - 3 10 2006
外部発表はい

All Science Journal Classification (ASJC) codes

  • 一般

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