Bond Dissociation Triggering Molecular Disorder in Amorphous H2O

Masaki Hada, Yuho Shigeeda, Shin Ya Koshihara, Takeshi Nishikawa, Yoshifumi Yamashita, Yasuhiko Hayashi

Research output: Contribution to journalArticle

Abstract

We developed a system to deposit H2O molecules onto ultrathin silicon nitride substrates in situ using time-resolved transmission electron diffraction apparatus and performed ultrafast time-resolved electron diffraction measurements in the noncrystalline (amorphous) H2O under near-ultraviolet photoexcitation. The observed dynamics directly represent O-H bond dissociation via multiphoton absorption and charge transfer, which trigger ionization and intermolecular disorder in the amorphous H2O. Our results illustrate the intriguing nature of light-matter and matter-matter interactions in H2O molecules.

Original languageEnglish
Pages (from-to)9579-9584
Number of pages6
JournalJournal of Physical Chemistry A
Volume122
Issue number49
DOIs
Publication statusPublished - Dec 13 2018

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Electron diffraction apparatus
disorders
dissociation
Molecules
Photoexcitation
electron diffraction
Electron diffraction
Ionization
Charge transfer
multiphoton absorption
Deposits
photoexcitation
silicon nitrides
molecules
Substrates
actuators
deposits
charge transfer
ionization
interactions

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this

Bond Dissociation Triggering Molecular Disorder in Amorphous H2O. / Hada, Masaki; Shigeeda, Yuho; Koshihara, Shin Ya; Nishikawa, Takeshi; Yamashita, Yoshifumi; Hayashi, Yasuhiko.

In: Journal of Physical Chemistry A, Vol. 122, No. 49, 13.12.2018, p. 9579-9584.

Research output: Contribution to journalArticle

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AU - Yamashita, Yoshifumi

AU - Hayashi, Yasuhiko

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