The hydrophilic oxygen atoms of polyethylenoxide chains inserted as pillars in γ-zirconium phosphate form hydrogen bonds with the acid groups of the host. As a result the pillars are almost perpendicular to the γ layers. Upon changing the pH level of the supernatant solution the hydrogen bonds are broken and the pillars become almost perpendicular to the layers (shown schematically). Thus there is a reversible enlargement–shortening of the interlayer space.

Shaping solid-state supramolecular cavities: chemically induced accordion-like movement of gamma zirconium phosphate containing polyethylenoxide pillars

ALBERTI, Giulio;VIVANI, Riccardo
1999

Abstract

The hydrophilic oxygen atoms of polyethylenoxide chains inserted as pillars in γ-zirconium phosphate form hydrogen bonds with the acid groups of the host. As a result the pillars are almost perpendicular to the γ layers. Upon changing the pH level of the supernatant solution the hydrogen bonds are broken and the pillars become almost perpendicular to the layers (shown schematically). Thus there is a reversible enlargement–shortening of the interlayer space.
1999
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11391/164708
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