Self-assembled peptide-pi-electron supramolecular polymers for bioinspired energy harvesting, transport and management
Organic electronics offer a route toward electronically active biocompatible soft materials capable of interfacing with biological and living systems. Discovering new organic molecules capable of high charge mobility is challenging due to the vast size of molecular design space and the multi-scale nature of charge transport that requires modeling electrons, molecules, and supramolecular assemblies.
We developed a multi-scale screening paradigm coupling (i) all-atom molecular dynamics to predict supramolecular structures, (ii) density functional theory to compute chemical stability, reorganization energy, and charge transfer integrals, and (iii) Marcus theory to predict charge mobility. This integrated virtual screening platform enabled us to identify new synthetic peptide-based molecules capable of producing self-assembled biocompatible nanoaggregates with predicted hole mobilities of 0.224 cm2V/s and electron mobilities of 0.143 cm2V/s, and uncovered design rules for high charge mobility.
This work embraced the MGI philosophy in its use of high-performance computation and multi-scale methods to accelerate advanced materials discovery. It was recognized as an editor’s choice “HOT” article in Molecular Systems Design & Engineering.