NDLI: Supramolecular anion recognition in water: synthesis of hydrogen-bonded supramolecular frameworks

Content Provider	Royal Society of Chemistry (RSC)
Author	White, Nicholas G. Doonan, Christian J. Thomas, Michael Tarzia, Andrew Morshedi, Mahbod
Copyright Year	2017
Abstract	The interaction of tetratopic amidinium-containing receptors with terephthalate anions leads to porous framework materials assembled through charge-assisted hydrogen bonds. The frameworks form in good yield within minutes in water at room temperature, but no framework material is obtained if other anions (Cl−, Br−, NO3−, SO42− or isophthalate2−) are used in place of terephthalate. Two forms of the framework can be prepared: one with a connected pore network, and a more dense phase with discrete voids. We demonstrate that these are the kinetic and thermodynamic products, respectively. Either framework can be prepared independently and can be converted to the other form in response to stimuli. Furthermore, the frameworks can be controllably disassembled and reassembled in response to acid/base triggers suggesting that this new class of materials may have applications in the selective encapsulation and release of guests.
Starting Page	3019
Ending Page	3025
Page Count	7
File Format	HTM / HTML PDF
ISSN	20416520
Volume Number	8
Issue Number	4
Journal	Chemical Science
DOI	10.1039/c7sc00201g
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Subscribed
Subject Keyword	Acid Hydrogen bond
Content Type	Text
Resource Type	Article
Subject	Chemistry

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Supramolecular anion recognition in water: synthesis of hydrogen-bonded supramolecular frameworks