Thermally bisignate supramolecular polymerization.

@article{VenkataRao2017ThermallyBS,
  title={Thermally bisignate supramolecular polymerization.},
  author={K. Venkata Rao and Daigo Miyajima and Atsuko Nihonyanagi and Takuzo Aida},
  journal={Nature chemistry},
  year={2017},
  volume={9 11},
  pages={
          1133-1139
        }
}
One of the enticing characteristics of supramolecular polymers is their thermodynamic reversibility, which is attractive, in particular, for stimuli-responsive applications. These polymers usually disassemble upon heating, but here we report a supramolecular polymerization that occurs upon heating as well as cooling. This behaviour arises from the use of a metalloporphyrin-based tailored monomer bearing eight amide-containing side chains, which assembles into a highly thermostable one… 
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References

SHOWING 1-10 OF 68 REFERENCES
Mechanism of self-assembly process and seeded supramolecular polymerization of perylene bisimide organogelator.
TLDR
It is asserted that a cooperative nucleation-growth supramolecular polymerization accompanied by thermal hysteresis can be controlled in a living manner.
Controlling supramolecular polymerization through multicomponent self‐assembly
The self-assembly into supramolecular polymers is a process driven by reversible non-covalent interactions between monomers, and gives access to materials applications incorporating mechanical,
Living supramolecular polymerization realized through a biomimetic approach
TLDR
This work presents an ‘artificial infection’ process in which porphyrin-based monomers assemble into nanoparticles, and are then converted into nanofibres in the presence of an aliquot of the nan ofibre, which acts as a ‘pathogen’.
First thermally responsive supramolecular polymer based on glycosylated amino acid.
TLDR
This paper clearly demonstrates that, regardless of the low molecular weight, a glycosylated amino acid derivative newly screened by a combinatorial method forms a macroscopic supramolecular hydrogel that reversibly swells or shrinks in response to the external temperature.
Supramolecular block copolymers by kinetically controlled co-self-assembly of planar and core-twisted perylene bisimides
TLDR
The studies reveal that the as-formed supramolecular block copolymer constitutes a kinetic self-assembly product that transforms into thermodynamically more stable self-sorted homopolymers upon heating.
Biocatalytic induction of supramolecular order
TLDR
By combining biocatalysis and molecular self-assembly, supramolecular gels have shown the ability to more quickly access higher-ordered structures by simply increasing enzyme concentration, and gels that assembled faster showed fewer defects.
Supramolecular polymerization.
TLDR
In classical covalent polymerizations structural cooperativity has been observed for the acid-initiated polymerization of isocyanides to form a helical polymer, and a mechanism was proposed in which an initial helical oligomer needs to be formed, which then acts as a template for the incorporation of subsequent monomeric units.
Polymer phase-transition behavior driven by a charge-transfer interaction.
TLDR
The first example of LCST behavior based on a CT interaction as the driving force is demonstrated, which demonstrates the precise and facile control of the lower critical solution temperature (LCST) of a polymer solution, that is, its phase-transition behavior, by the use of aCT interaction.
Thermoresponsive dynamers: thermally induced, reversible chain elongation of amphiphilic poly(acylhydrazones).
TLDR
Results of turbidometry studies, size-exclusion chromatography-multiangle laser light scattering, and transmission electron microscopy suggest that heating the polymer below the LCS temperature leads to polymer growth with preservation of the characteristic nanostructured morphology, whereas the onset of the microphase separated state causes a fundamental change in morphology, in which the polymer chains aggregate into larger bundles and fibers.
Biodegradable thermogels.
TLDR
Key materials developed in the laboratory for the construction of biodegradable thermogels are described and insights for controlling parameters, such as the sol-gel transition temperature, gel modulus, critical gel concentration, and degradability of the polymer are provided.
...
...