2014-06-26
Infrared-activated proton transfer in aqueous Nafion proton-exchange-membrane nanochannels
Publication
Publication
Phys. Rev. Lett. , Volume 112 - Issue Article number: 258301 p. 1- 5
We report on the observation of a strong reorganization of the proton hydration structure in hydrated Nafion membranes following single-quantum excitation of a proton vibration with ∼4 μm light pulses. The reorganization takes place with a time constant of 170±20 fs and leads to a strong red shift of the excited proton vibration and the rise of new waterlike O–H stretch absorption bands. These observations can be explained from a vibrational-excitation-induced change of the proton-hydration structure that involves transfer of the proton charge. The results are consistent with recent quantum molecular dynamics simulations of proton transfer in Nafion membranes.
| Additional Metadata | |
|---|---|
| APS | |
| doi.org/10.1103/PhysRevLett.112.258301 | |
| Phys. Rev. Lett. | |
| Organisation | Ultrafast Spectroscopy |
|
Liu, L., & Bakker, H. (2014). Infrared-activated proton transfer in aqueous Nafion proton-exchange-membrane nanochannels. Phys.Rev.Lett., 112(Article number: 258301), 1–5. doi:10.1103/PhysRevLett.112.258301 |
|
