Opal-like Multicolor Appearance of Self-Assembled Photonic Array.

ACS Applied Materials & Interfaces
Zohar A ArnonEhud Gazit

Abstract

Molecular self-assembly of short peptide building blocks leads to the formation of various material architectures that may possess unique physical properties. Recent studies had confirmed the key role of biaromaticity in peptide self-assembly, with the diphenylalanine (FF) structural family as an archetypal model. Another significant direction in the molecular engineering of peptide building blocks is the use of fluorenylmethoxycarbonyl (Fmoc) modification, which promotes the assembly process and may result in nanostructures with distinctive features and macroscopic hydrogel with supramolecular features and nanoscale order. Here, we explored the self-assembly of the protected, noncoded fluorenylmethoxycarbonyl-β,β-diphenyl-Ala-OH (Fmoc-Dip) amino acid. This process results in the formation of elongated needle-like crystals with notable aromatic continuity. By altering the assembly conditions, arrays of spherical particles were formed that exhibit strong light scattering. These arrays display vivid coloration, strongly resembling the appearance of opal gemstones. However, unlike the Rayleigh scattering effect produced by the arrangement of opal, the described optical phenomenon is attributed to Mie scattering. Moreover, by contr...Continue Reading

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Citations

Sep 24, 2019·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Carlo DiaferiaAntonella Accardo
Mar 27, 2021·Journal of Colloid and Interface Science·Guy WiernikSandeep Verma
Aug 29, 2019·ACS Omega·Antonio C C RibeiroTatiana D Martins

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