20-21 November 2014
National Centre for Synchrotron Science
Australia/Melbourne timezone
Save the date: User Meeting 2015 - 26-27 November

Enantionmeric Separation Using Entangled Coordination Polymers

20 Nov 2014, 17:30
1h 30m
NCSS Exhibition Area ()

NCSS Exhibition Area

Australian Synchrotron 800 Blackburn Road Clayton VIC 3168
Board: 111


Dr David Turner (Monash University)


Chiral coordination polymers, using ligands that contain large aromatic cores have been used to synthesize a series of polycatenanes and a polyrotaxane, by virtue of π interactions involving metallomacrocyclic motifs, including interpenetrated networks that have been used as stationary phases to obtain excellent enantiomeric resolution in liquid-chromatographic separations. A series of dicarboxylate ligands, in which amino acids are appended to naphthalene- or perylene-diimides, have been used to readily impart chirality into coordination polymers. A repeating structural motif, in which dinuclear metal clusters are bridged by two ligands to form a metallomacrocycle with a separation of ca. 7 Å between opposing aromatic faces – an ideal distance for hosting an aromatic guest. This motif has been exploited to form polycatenanes, through self-complementary association of the metallomacrocycles, and a 1D→3D polyrotaxane when using a 4,4’-bipyridyl co-ligand as a linear thread. Two 2D→3D interpenetrated materials have been shown to act as efficient stationary phases for enantioselective separations in small-scale testing with 1-phenylethanol, pantolactone and limonene. The separation activity of the material is much greater than that of the free ligand alone.
Keywords or phrases (comma separated) Coordination Polymers, Crystallography

Primary author

Dr David Turner (Monash University)


Mr Chadin Kulsing (Monash) Dr Chris Hawes (Monash) Prof. Philip Marriott (Monash) Ms Stephanie Boer (Monash University) Ms Yada Nolvachai (Monash)

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