Molecular motions and proton dynamics of water molecules confined within single wall carbon nanotubes

We have studied about molecular motions and proton dynamic of water molecules confined within single wall carbon nanotubes by ¹H and ²H nuclear magnetic resonance in the temperature range 100k to 300k. This was done across so called ice-nanotube formation. We observed that above 220k the water is in a liquid like state with transitional and quasifree rotational motions. It was also observed that below 220k the large amplitude molecular motions starts to freeze within a time scale of 10 ⁻⁶ seconds. We have reported systematic NMR observation which explore such dynamics.