Exploiting Coordination Isomerism for Controlled Self‐Assembly

@article{Bumer2019ExploitingCI,
  title={Exploiting Coordination Isomerism for Controlled Self‐Assembly},
  author={Nils B{\"a}umer and K. Kartha and Naveen Kumar Allampally and S. Yagai and R. Albuquerque and Gustavo Fern{\'a}ndez},
  journal={Angewandte Chemie (International Ed. in English)},
  year={2019},
  volume={58},
  pages={15626 - 15630}
}
Abstract We exploited the inherent geometrical isomerism of a PtII complex as a new tool to control supramolecular assembly processes. UV irradiation and careful selection of solvent, temperature, and concentration leads to tunable coordination isomerism, which in turn allows fully reversible switching between two distinct aggregate species (1D fibers↔2D lamellae) with different photoresponsive behavior. Our findings not only broaden the scope of coordination isomerism, but also open up… Expand
13 Citations

Figures and Topics from this paper

Morphology control in metallosupramolecular assemblies through solvent-induced steric demand.
TLDR
The findings reveal that the different solvation of peripheral solubilizing groups in solvents of opposed polarity is an efficient method for morphology control in self-assembly. Expand
Tuning Aqueous Supramolecular Polymerization by an Acid‐Responsive Conformational Switch
TLDR
This work has designed a bipyridine‐based linear bolaamphiphile that forms ordered supramolecular polymers in aqueous media through cooperative aromatic and hydrophobic interactions and demonstrates the use of 2,2’‐bipyridines as acid‐responsive conformational switches to tune supramolescular polymerization processes. Expand
Tuning energy landscapes and metal–metal interactions in supramolecular polymers regulated by coordination geometry†
TLDR
Two self-assembled Pt(ii) complexes 1 and 2 that feature an identical aromatic surface, but differ in the coordination and molecular geometry are designed, which highlights the relevance of coordination geometry for the development of functional supramolecular materials. Expand
Controlled Supramolecular Polymerization of d8 Metal Complexes through Pathway Complexity and Seeded Growth.
TLDR
This Minireview has collected recent examples of d8 metal complexes exhibiting controlled supramolecular polymerization through pathway complexity and seeded-growth approaches. Expand
Solvent-controlled E/Z isomerization vs. [2 + 2] photocycloaddition mediated by supramolecular polymerization†
TLDR
A π-extended cyanostilbene bolaamphiphile is designed that exhibits tuneable solvent-dependent photochemical behaviour and demonstrates a novel approach towards solvent-selective and environmentally friendly photochemical transformations, which is expected to broaden the scope of supramolecular polymerization. Expand
Recent progress on supramolecular assembly of organoplatinum(II) complexes into long-range ordered nanostructures
Abstract Organoplatinum(II) complexes have received enormous attention because of their intriguing photo-physical and chemotherapeutic behaviors. They are also regarded as excellent building blocksExpand
Phototriggered Supramolecular Assembly
TLDR
This mini-review highlights representative recent examples of phototriggered supramolecular assemblies (from the monomer or another type of assembly) by removal of a photolabile protecting group, photoisomerization, or other methods of photoactivation of a dormant building block. Expand
Consequences of hidden kinetic pathways on supramolecular polymerization† †Electronic supplementary information (ESI) available. See DOI: 10.1039/d0sc02115f
We show that hidden kinetic states have a dramatic impact on the thermodynamics of supramolecular polymerization, enabling new aggregation pathways with potentially new functionalities.
Supramolecular isomerism in two nickel(II) coordination polymers constructed with the flexible 2-carboxyphenoxyacetate linker: Syntheses, structure analyses and magnetic properties
Abstract Two binary nickel (II) supramolecular isomers, namely 1D-Ni and 2D-Ni with the same formula [Ni(2-cpa)2(H2O)]n (2-H2cpa ​= ​2-carboxyphenoxyacetic acid), have been prepared by differentExpand
Self-assembly of isomeric naphthalene appended glucono derivatives: nanofibers and nanotwists with circularly polarized luminescence emission.
TLDR
Two isomeric naphthalene appended glucono derivatives substituted at the 1 or 2-naphthyl positions were designed and their self-assembly behaviors and optical properties were investigated, finding that Nap-2 packed in a more orderly fashion than Nap-1, leading to a hierarchical assembly forming nanotwist structures. Expand
...
1
2
...

References

SHOWING 1-10 OF 46 REFERENCES
Control of the light-response in supramolecular metallopolymeric gels by tuning the coordination metal.
TLDR
Judicious choice of the electronic and photophysical properties of both ditopic ligand and metal ion enabled to achieve control over photomechanical response in supramolecular organogels upon UV light irradiation through molecular design. Expand
Thermally assisted photonic inversion of supramolecular handedness.
TLDR
A photoresponsive supramolecular assembly demonstrates that light, along with heating and cooling, can cause chiral communication between molecules, causing bias in the helicity of the complex, causing a reversible switching of macroscopic handedness. Expand
Solvent dependent pathway complexity and seeded supramolecular polymerization.
cNDI-1 exhibits an off-pathway aggregate in cyclic hydrocarbon (MCH) but produces a helical supramolecular polymer in linear alkane (decane) by well-defined J-aggregation. Effective solvent-assistedExpand
Pathway Complexity Versus Hierarchical Self-Assembly in N-Annulated Perylenes: Structural Effects in Seeded Supramolecular Polymerization.
Studies were carried out on the hierarchical self-assembly versus pathway complexity of N-annulated perylenes 1-3, which differ only in the nature of the linking groups connecting the perylene coreExpand
The Metal-Metal-to-Ligand Charge Transfer Excited State and Supramolecular Polymerization of Luminescent Pincer PdII -Isocyanide Complexes.
TLDR
Comprehensive spectroscopic studies reveal a pathway with a kinetic trap that can be modulated by changing the counteranion and metal atom in these pincer PdII -isocyanide aggregates. Expand
Pathway Control in Cooperative vs. Anti-cooperative Supramolecular Polymers.
TLDR
This work reports an unsymmetrically substituted amphiphilic Pt(II) complex 1 that shows unique self-assembly behaviour in nonpolar media, providing two competing anti-cooperative and cooperative pathways with distinct molecular arrangement and nanoscale morphology. Expand
Controlling and imaging biomimetic self-assembly.
TLDR
Here the complex supramolecular landscape of a platinum(II) compound is characterized fully and controlled successfully through a combination of supramolescular and photochemical approaches. Expand
Living Supramolecular Polymerization of a Perylene Bisimide Dye into Fluorescent J-Aggregates.
TLDR
Spectroscopic studies revealed a subtle interplay of π-π interactions and intra- and intermolecular hydrogen bonding for monomeric, H-, and J-aggregated PBIs. Expand
Non-equilibrium supramolecular polymerization
TLDR
Going beyond equilibrium polymerization is an exciting new direction in the field of supramolecular chemistry and the preparation protocol and mechanistic insights allow to identify each one of them. Expand
Photoreactive helical nanoaggregates exhibiting morphology transition on thermal reconstruction
TLDR
Molecular assemblies are reported, based on a photo-cross-linkable chromophoric dyad, in which a small amount of ultraviolet-generated photochemical product can guide the entire system into different assembly processes. Expand
...
1
2
3
4
5
...