Magnetic-resonance spectroscopy of porous quantum-size structures

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Abstract
The results of investigations of nuclear magnetic resonance of water protons in porous silicon are reported. It is shown that magnetic-resonance spectroscopy with a “flexible probe” consisting of water molecules is an effective method for analyzing porous quantum-size structures with a complicated spatial configuration of the pores. The “NMR isotherms” of hydrated layers of porous silicon obtained in different technological regimes are presented and discussed. Sorption processes are studied and a model is proposed for forming water monolayers on a porous surface. It is established that a por fine structure with an average diameter of 1.4 nm is present in the layers.

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