Transient Catalytic Activity of a Triazole‐based Gelator Regulated by Molecular Gel Assembly/Disassembly

Abstract

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Spontaneous Aminolytic Cyclization and Self‐Assembly of Dipeptide Methyl Esters in Water

“…This approach provides a level of control over both kinetics (through modulating reaction rates) and thermodynamics (modulating chemical structure of building blocks), giving access to equilibrium, [6] kinetically trapped [7] or dynamically unstable supramolecular nanostructures. [8][9][10][11][12][13][14] A number of supramolecular functionalities [15] have been reported by using in-situ formation of self-assembly building blocks that are difficult to achieve by using conventional self-assembly approaches, including localized nanostructure formation to selectively kill cancer cells, [16] transient electronic wires, [17] and negatively charged biological membranes which act as catalysts for hydrogel formation. [18] Peptides and peptide derivatives are attractive building blocks for the fabrication of artificial nanostructures with tremendous biological and nanotechnology applications, arising from their combinatorial diversity and biocompatibility.…”

Catalysis in Supramolecular Systems: the Case of Gel Phases

“…The same authors also studied the catalytic ability of Cu(I) metallogels formed by L-valine amphiphilic gelator, CrTzValC 12 , with only one triazole functionality (Scheme 20), for the same Huisgen 1,3 dipolar cycloaddition between phenylacetylene and benzylazide reported in Scheme 17. [30] Interestingly, in this case, the addition of benzylazide and phenylacetylene to the reaction medium promoted the disassembly of the gel. Nevertheless, the dynamic behaviour of this system provided a good catalytic activity to the gel obtaining conversions of 71 % in 3 hours, in the presence of 1 mol% of catalyst.…”

Supramolecular tripodal Au(i) assemblies in water. Interactions with a pyrene fluorescent probe

“…1 These examples from Nature have inspired chemists over the past several years to develop synthetic protocols to obtain complex assemblies employing supramolecular interactions such as hydrophobic forces, hydrogen-bonding, transition metal coordination, and gels formation among others. [2][3][4][5][6] These structures are worthy candidates to be involved in processes such as catalysis, [7][8][9] sensing, [10][11][12][13] artificial photocapturing systems 14 or encapsulation among others. 15 Container (encapsulating) architectures can encage guest molecules within a confined space, dynamically harnessing multiple non-covalent interactions.…”