Exploring the Symmetry, Structure, and Self-Assembly Mechanism of a Gigantic Seven-Fold Symmetric {Pd84} Wheel†
Rachel A. Scullion
WestCHEM, School of Chemistry, University of Glasgow, University Avenue, Glasgow G12 8QQ (UK) http://www.croninlab.com
Search for more papers by this authorDr. Andrew J. Surman
WestCHEM, School of Chemistry, University of Glasgow, University Avenue, Glasgow G12 8QQ (UK) http://www.croninlab.com
These authors contributed equally to this work.
Search for more papers by this authorDr. Feng Xu
State Key Lab of Chemo/Bio Sensing, College of Science and Engineering, Hunan Univeristy, Changsha, 410082 (PR China)
These authors contributed equally to this work.
Search for more papers by this authorDr. Jennifer S. Mathieson
WestCHEM, School of Chemistry, University of Glasgow, University Avenue, Glasgow G12 8QQ (UK) http://www.croninlab.com
These authors contributed equally to this work.
Search for more papers by this authorDr. De-Liang Long
WestCHEM, School of Chemistry, University of Glasgow, University Avenue, Glasgow G12 8QQ (UK) http://www.croninlab.com
Search for more papers by this authorFadi Haso
Department of Polymer Science, University of Akron, Akron, OH 44325 (USA)
Search for more papers by this authorProf. Tianbo Liu
Department of Polymer Science, University of Akron, Akron, OH 44325 (USA)
Search for more papers by this authorCorresponding Author
Prof. Leroy Cronin
WestCHEM, School of Chemistry, University of Glasgow, University Avenue, Glasgow G12 8QQ (UK) http://www.croninlab.com
WestCHEM, School of Chemistry, University of Glasgow, University Avenue, Glasgow G12 8QQ (UK) http://www.croninlab.comSearch for more papers by this authorRachel A. Scullion
WestCHEM, School of Chemistry, University of Glasgow, University Avenue, Glasgow G12 8QQ (UK) http://www.croninlab.com
Search for more papers by this authorDr. Andrew J. Surman
WestCHEM, School of Chemistry, University of Glasgow, University Avenue, Glasgow G12 8QQ (UK) http://www.croninlab.com
These authors contributed equally to this work.
Search for more papers by this authorDr. Feng Xu
State Key Lab of Chemo/Bio Sensing, College of Science and Engineering, Hunan Univeristy, Changsha, 410082 (PR China)
These authors contributed equally to this work.
Search for more papers by this authorDr. Jennifer S. Mathieson
WestCHEM, School of Chemistry, University of Glasgow, University Avenue, Glasgow G12 8QQ (UK) http://www.croninlab.com
These authors contributed equally to this work.
Search for more papers by this authorDr. De-Liang Long
WestCHEM, School of Chemistry, University of Glasgow, University Avenue, Glasgow G12 8QQ (UK) http://www.croninlab.com
Search for more papers by this authorFadi Haso
Department of Polymer Science, University of Akron, Akron, OH 44325 (USA)
Search for more papers by this authorProf. Tianbo Liu
Department of Polymer Science, University of Akron, Akron, OH 44325 (USA)
Search for more papers by this authorCorresponding Author
Prof. Leroy Cronin
WestCHEM, School of Chemistry, University of Glasgow, University Avenue, Glasgow G12 8QQ (UK) http://www.croninlab.com
WestCHEM, School of Chemistry, University of Glasgow, University Avenue, Glasgow G12 8QQ (UK) http://www.croninlab.comSearch for more papers by this authorWe thank the EPSRC, WestCHEM, and the University of Glasgow for supporting this work as well as Shodex for lending us several columns.
Abstract
The symmetry, structure and formation mechanism of the structurally self-complementary {Pd84} = [Pd84O42(PO4)42(CH3CO2)28]70− wheel is explored. Not only does the symmetry give rise to a non-closest packed structure, the mechanism of the wheel formation is proposed to depend on the delicate balance between reaction conditions. We achieve the resolution of gigantic polyoxopalladate species through electrophoresis and size-exclusion chromatography, the latter has been used in conjunction with electrospray mass spectrometry to probe the formation of the ring, which was found to proceed by the stepwise aggregation of {Pd6}− = [Pd6O4(CH3CO2)2(PO4)3Na6−nHn]− building blocks. Furthermore, the higher-order assembly of these clusters into hollow blackberry structures of around 50 nm has been observed using dynamic and static light scattering.
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