Indication of a very large proton diffusion in ice ih

Anna Uritski, Itay Presiado, Dan Huppert*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


A time-resolved emission technique was employed to study the photoprotolytic cycle of the 2-naphthol-6,8-disulfonate (2N68DS) photoacid in the presence of a low concentration of a strong HCl acid. We found that an excess of protons in ice has a very large and profound effect on the photoprotolytic cycle. The excess proton reacts with the deprotonated form of the photoacid. An analysis of the experimental data reveals that the proton diffusion constant in ice in the temperature range of 240-270 K is much larger than in the liquid state. Under certain assumptions and approximations, the calculated proton diffusion constant in ice is 10 times larger than in water at 295 K, i.e., DH+ice = 1.2 × 10-3 cm 2/s.

Original languageEnglish
Pages (from-to)11991-12002
Number of pages12
JournalJournal of Physical Chemistry C
Issue number31
StatePublished - 7 Aug 2008


Dive into the research topics of 'Indication of a very large proton diffusion in ice ih'. Together they form a unique fingerprint.

Cite this