Peptoid-Directed Assembly of CdSe Nanoparticles

December 26, 2020

Scientific Achievement

Used components that are tunable at an atomic-level to create a self-assembling hybrid material that is generalizable in composition and structure.

Significance and Impact

This work identifies design parameters to create compatible and stable hybrid assemblies between peptoids and semiconducting nanoparticles.

Research Details

  • CdSe nanoparticles were shown to assemble onto peptoid nanostructures with variability both in the peptoid structure (tube or sheet) and size of the CdSe.

  • Changing the amount of maleimide introduced during peptoid self-assembly allowed control over number of particles bound to a given peptoid sheet.

  • The binding mechanism between the peptoid and CdSe was investigated using ¹H NMR to determine importance of functional groups both on the QDs and peptoids

Maleimide-containing peptoid tubes and sheets used to assemble CdSe QDs at varying densities depending on maleimide concentration.

Monahan, M., B. Cai, T. Jian, S. Zhang, G. Zhu, C-L Chen, J.J. De Yoreo, and B. Cossairt. (2021). Peptoid-directed assembly of CdSe nanoparticles. Nanosale 13: 1273-1282. DOI: 10.1039/D0NR07509D

Work performed at the University of Washington and Pacific Northwest National Laboratory

 

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