Peptoid Design and Applications in Material Science

Peptoids are sequence-defined polymers composed of N-substituted glycine units whose side-chain diversity permits precise control over backbone conformation, intermolecular interactions and overall material function. By varying side-chain chemistry—hydrophobic, polar, chiral or aromatic—researchers have created a broad palette of nanostructures including two-dimensional membranes, helical fibres, stiff nanotubes and crystalline lattices. These materials mimic biological functions such as self-repair, selective binding and stimuli-responsive shape change while offering enhanced stability to proteolysis and a modular synthetic route. Advances in computational modelling, cryogenic electron microscopy and spectroscopic characterisation have clarified the roles of amphiphilicity, chain terminus interactions and supramolecular chirality in dictating assembly pathways. Emerging applications span membrane-mimetic platforms for biosensing, plasmonic nanoparticle templating, environmental remediation, chiral photonics and scaffolds for catalysis. The global significance of peptoid materials lies in their tunable properties, biocompatibility and potential for sustainable manufacturing of functional polymers with biomimetic performance.

Research from Nature Portfolio

Recent studies have demonstrated the assembly of short amphiphilic peptoids into nanohelices with controllable supramolecular chirality by tuning polar and hydrophobic side-chain groups. Computational simulations reveal that minimising hydrophobic exposure within twisted helices is thermodynamically favoured and that a single chiral side-chain insertion can invert the handedness of the supramolecular structure. In another advance, sequence-defined peptoid oligomers were shown to roll up from crystalline nanosheets into single-walled stiff nanotubes exhibiting pH-triggered, reversible contraction–expansion behaviour. By varying chain length and hydrophobic content, researchers tuned tube diameter, wall thickness and mechanical stiffness, and further demonstrated their use in water decontamination and cellular adhesion studies. Foundational work on lipid-like peptoids has also produced highly stable, self-repairing two-dimensional membranes whose crystallinity can be leveraged to pattern functional cargoes across large areas.

Peptoid Design and Applications in Material Science publication trend

The graph below shows the total number of articles in peptoid design and applications in material science across all publications each year (not limited to Nature Index journals).

Technical terms

Peptoid: A synthetic polymer of N-substituted glycine units with side-chains on the amide nitrogen.

Amphiphilic: Containing both hydrophobic and hydrophilic regions, enabling self-assembly in aqueous environments.

Nanohelix: A helical nanostructure formed by the supramolecular assembly of sequence-defined oligomers.

Crystalline lattice: A regular, repeating arrangement of molecules in a solid structure.

Supramolecular chirality: The overall handedness of an assembly arising from chiral arrangement of achiral or chiral building blocks.

Self-assembly: The autonomous organisation of components into ordered structures driven by noncovalent interactions.

References

1. Assembly of short amphiphilic peptoids into nanohelices with controllable supramolecular chirality. Nature Communications (2024).
2. Designable and dynamic single-walled stiff nanotubes assembled from sequence-defined peptoids. Nature Communications (2018).
3. Highly stable and self-repairing membrane-mimetic 2D nanomaterials assembled from lipid-like peptoids. Nature Communications (2016).
4. Structural Elucidation of a Polypeptoid Chain in a Crystalline Lattice Reveals Key Morphology-Directing Role of the N‑Terminus. ACS Nano (2023).
5. Chiral Display of Pyrenes on a Peptoid Backbone: Conformational Homogeneity of Peptoid Controls Excimer Chirality. Small Structures (2023).