Bond Dissociation Triggering Molecular Disorder in Amorphous H 2 O

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

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


We developed a system to deposit H 2 O 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) H 2 O 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 H 2 O. Our results illustrate the intriguing nature of light-matter and matter-matter interactions in H 2 O molecules.

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

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry


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