Charge "Mis-matched" Hydrogen Bonded Frameworks for Cation Exchange and Dye Sorption

07 February 2023, Version 1
This content is a preprint and has not undergone peer review at the time of posting.


Anionic hydrogen bonded frameworks were synthesised from di or tetra-amidinium hydrogen bond donor components and a charge mis-matched tecton possessing a 5 charge but only four hydrogen bond accepting groups. The net negative charge on the framework skeletons necessitates the presence of a cation in the framework channel. In one of the frameworks, the initially incorporated organic cation was rapidly displaced by smaller inorganic cations, or the cationic dye methylene blue. This facilitated the effective and selective removal of this dye from water.


supramolecular chemistry
hydrogen bonded frameworks
hydrogen bonds
cation exchange
dye sorption
methylene blue

Supplementary materials

Supporting Information
Supporting Information for Charge Mis-matched Hydrogen Bonded Frameworks for Cation Exchange and Dye Sorption


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