Evidence of Porphyrin-Like Structures in Natural Melanin Pigments Using Electrochemical Fingerprinting

Evidence of Porphyrin-Like Structures in Natural Melanin Pigments Using Electrochemical Fingerprinting

© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 28(2016), 16 vom: 03. Apr., Seite 3173-80
1. Verfasser: Kim, Young Jo (VerfasserIn)
Weitere Verfasser: Khetan, Abhishek, Wu, Wei, Chun, Sang-Eun, Viswanathan, Venkatasubramanian, Whitacre, Jay F, Bettinger, Christopher J
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2016
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. biopolymers cathodes electrochemical storage melanin mesoscale Macromolecular Substances Melanins Porphyrins
Beschreibung
Zusammenfassung:© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Eumelanins are extended heterogeneous biopolymers composed of molecular subunits with ambiguous macromolecular topology. Here, an electrochemical fingerprinting technique is described, which suggests that natural eumelanin pigments contain indole-based tetramers that are arranged into porphyrin-like domains. Spectroscopy and density functional theory calculations suggest that sodium ions undergo occupancy-dependent stepwise insertion into the core of porphyrin-like tetramers in natural eumelanins at discrete potentials
Beschreibung:Date Completed 26.03.2018
Date Revised 30.09.2020
published: Print-Electronic
Citation Status MEDLINE
ISSN:1521-4095
DOI:10.1002/adma.201504650