Self-Assembly of Metallo-Supramolecular Polygons and Polyhedra
Self-assembly relies on building blocks that are suitably programmed with respect to the position and directionality of their binding sites which direct the assembly of many building blocks into one larger structure. Its formation is reversible so that error correction can occur, if binding sites have not been connected the most favorable way.
Among the metallo-supramolecular structures prepared and characterized in the group are simple polygons incorporating a number of identical ligands and metal centers, but also larger cages. In cooperation with the groups of Markus Albrecht and Jonathan Nitschke, mass spectrometry served as a tool to characterize even quite complex helicates and [7]catenanes and to follow their formation and dissociation pathways.
Chiral metallo-supramolecular polygons have been made some of which bear dynamically chiral bipyridyl ligands and show heterochiral self-sorting. Other chiral rhomboids have been deposited on surfaces to provide a means to structure the surface with chiral host molecules.
Some metallo-supramolecular oligomer chains even exhibit hierarchical self-assembly in that they grow into nanospheres and metallo-supramolecular vesicles.
A metallo-supramolecular cage undergoing a cage contraction in the gas phase
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Metallo-Supramolecular Self-Assembly
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180
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156
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122
Self-assembly of heterodinuclear triple-stranded helicates: Control by coordination number and charge
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114
Self-assembling squares with amino acid-decorated bipyridines: heterochiral self-sorting of dynamically interconverting diastereomers
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113
Metallo-Supramolecular Self-Assembly: the Case of Triangle-Square Equilibria
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110
Synthesis of Axially Chiral 4,4'-Bipyridines and their Remarkably Selective Self-Assembly into Chiral Metallo-Supramolecular Squares
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86
Synthesis of Chiral Self-Assembling Rhombs and Their Characterization in Solution, in the Gas Phase, and at the Liquid-Solid Interface
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128
Metallo-Supramolecular Nano-Spheres via Hierarchical Self-Assembly
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118
Hierarchical Self-Assembly of Metallo-Supramolecular Nano-Spheres
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94
Dicatechol cis-dioxomolybdenum(VI): a building block for a lithium cation templated monomer-dimer equilibrium
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81
Hierarchical Assembly of Helicate-Type Dinuclear Titanium(IV) Complexes
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183
Generation of a Dynamic System of Three-Dimensional Tetrahedral Polycatenanes
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Angew. Chem., 2013, 125, 5861-5864; Angew. Chem. Int. Ed., 2013, 52, 5749-5752
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121
A double intramolecular cage contraction within a self-assembled metallo-supramolecular bowl
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Chem. Commun. 2009, 785-787
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92
Helicate, Macrocycle, or Catenate: Dynamic Topological Control over Subcomponent Self-Assembly
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Chem. Eur. J. 2006, 12, 4069-4076
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44
Mass Spectrometric Characterization and Gas-Phase Chemistry of Self-Assembling Supramolecular Squares and Triangles
C. A. Schalley, T. Müller, P. Linnartz, M. Witt, M. Schäfer, A. Lützen
Chem. Eur. J. 2002, 8, 3538-3551