@article {474,
	title = {Spin-Polarized Xe-129 Nmr-Study of a Polymer Surface},
	journal = {Journal of Physical Chemistry},
	volume = {97},
	year = {1993},
	note = {J Phys Chem-UsKp603Times Cited:51Cited References Count:48},
	month = {Feb 25},
	pages = {1649-1655},
	abstract = {<p>A method for NMR studies of low surface area materials using optically pumped xenon gas is described. The method has been used to investigate spin-polarized xenon adsorbed onto poly(acrylic acid). The temperature dependence of the xenon-surface interaction, as measured by the xenon chemical shifts extrapolated to zero pressure, is shown to be consistent with a simple model of chemical exchange between the gas and adsorbed phases. The magnitude of the surface contribution to the Xe-129 chemical shift indicates a relatively strong interaction between xenon and poly(acrylic acid), possibly due to the polar carboxylic acid functional groups at the polymer surface. From the pressure dependence of the Xe-129 shift, the diffusion coefficient of xenon on poly(acrylic acid) is estimated to be 3.3 x 10(-5) cm2/s.</p>
},
	keywords = {temperature},
	isbn = {0022-3654},
	doi = {Doi 10.1021/J100110a029},
	url = {<Go to ISI>://WOS:A1993KP60300029},
	author = {Raftery, D. and Reven, L. and Long, H. and Pines, A. and Tang, P. and Reimer, J. A.}
}
