Dynamics of water confined in novel periodic mesoporous organosilica
The proposed experiment aims to investigate the slow dynamic motion of capillary condensed heavy water molecules confined in two PMO materials in the supercooled state on IN11 by neutron spin-echo spectroscopy. The two PMO used are Ph-PMO with a framework of phenol groups embedded in silica matrix (pore size ~2.7 nm) and TMS-Ph-PMO (~2.7 nm) in which some of the silanol groups in Ph-PMO are modified with tetramethylsilane (TMS) to increase the hydrophobic nature of the pore surface. The data will be analyzed to obtain the intermediate scattering function I(Q,t) that gives the correlation time of water molecules and the translational diffusion constants. The results obtained will be compared with previous ones on water confined in MCM-41 C14 (2.8 nm). These results give us important information about the dynamics of water confined in the well-defined pore space and, in particular, the effect of the hydrophilic-hydrophobic nature of the pore surfaces on the dynamic properties of water in confinement. The present outcome would provide useful information in various application fields, such as conservation of foods at low temperatures, usage of fuel cell under cold climate condition etc
Please note that you will need to login with your ILL credentials to download the data.
Download DataThe recommended format for citing this dataset in a research publication is in the following format:
BELLISSENT FUNEL; ASO Mai; FOUQUET Peter; YAMAGUCHI Toshio and YOSHIDA Koji. (2012). Dynamics of water confined in novel periodic mesoporous organosilica. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.6-02-482
ILL has partnered with DataCite as the registration agency
for data persistent identifiers.