Atypical Structural and π‐Electron Features of a Melanin Polymer That Lead to Superior Free‐Radical‐Scavenging Properties | Zendy

Panzella Lucia | Zendy; Gentile Gennaro | Zendy; D'Errico Gerardino | Zendy; Della Vecchia Nicola F. | Zendy; Errico Maria E. | Zendy; Napolitano Alessandra | Zendy; Carfagna Cosimo | Zendy; d'Ischia Marco | Zendy

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Atypical Structural and π‐Electron Features of a Melanin Polymer That Lead to Superior Free‐Radical‐Scavenging Properties

Author(s) -

Panzella Lucia,

Gentile Gennaro,

D'Errico Gerardino,

Della Vecchia Nicola F.,

Errico Maria E.,

Napolitano Alessandra,

Carfagna Cosimo,

d'Ischia Marco

Publication year - 2013

Publication title -

angewandte chemie international edition

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.831

H-Index - 550

eISSN - 1521-3773

pISSN - 1433-7851

DOI - 10.1002/anie.201305747

Subject(s) - scavenger , melanin , scavenging , chemistry , free radical scavenger , electron paramagnetic resonance , polymer , photochemistry , solid state , radical , antioxidant , organic chemistry , biochemistry , nuclear magnetic resonance , physics

The black we wear : Why nature selected 5,6‐dihydroxyindole‐2‐carboxylic acid (DHICA) to synthesize (photo)protective eumelanin pigments is an enigma. Synthetic DHICA eumelanin has now been shown to be a highly efficient free‐radical scavenger in the solid state, which is due to a conformationally interrupted π‐electron network associated with atypical optical, paramagnetic, and aggregation properties.

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