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- W3175755981 abstract "Peptide−π-conjugated materials are important for biointerfacing charge-transporting applications due to their aqueous compatibility and formation of long-range π-electron networks. Perylene diimides (PDIs), well-established charge-transporting π systems, can self-assemble in aqueous solutions when conjugated with amino acids. In this work, we leveraged computational guidance from our previous work to access two different self-assembled architectures from PDI–amino acid conjugates. Furthermore, we expanded the design rule to other sequences to learn that the closest amino acids to the π core have a significant effect on the photophysical properties of the resulting assemblies. By simply altering glycine to alanine at the closest residue position, we observed significantly different electronic properties as revealed through UV–vis, photoluminescence, and circular dichroism spectroscopies. Accompanying molecular dynamics simulations revealed two distinct types of self-assembled architectures: cofacial structures when the smaller glycine residue is at the closest residue position to the π core versus rotationally shifted structures when glycine is substituted for the larger alanine. This study illustrates the use of tandem computations and experiments to unearth and understand new design rules for supramolecular materials and exposes a modest amino acid substitution as a means to predictably modulate the supramolecular organization and engineer the photophysical properties of π-conjugated peptidic materials." @default.
- W3175755981 created "2021-07-05" @default.
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- W3175755981 date "2021-07-02" @default.
- W3175755981 modified "2023-09-27" @default.
- W3175755981 title "Computationally Guided Tuning of Peptide-Conjugated Perylene Diimide Self-Assembly" @default.
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- W3175755981 doi "https://doi.org/10.1021/acs.langmuir.1c01213" @default.
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- W3175755981 hasPublicationYear "2021" @default.
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