Results 11 to 20 of about 9,564 (223)
Transition dipole strength of eumelanin [PDF]
Physical Review E, 2007 We report the transition dipole strength of eumelanin (the principal human photoprotective pigment) in the ultraviolet and visible. We have used both theoretical (density functional) and experimental methods to show that eumelanin is not an unusually ...
Gilmore, J. B. +5 more
core +6 more sources
Towards Structure-Property-Function Relationships for Eumelanin [PDF]
Soft Matter, 2005 We discuss recent progress towards the establishment of important structure-property-function relationships in eumelanins - key functional bio-macromolecular systems responsible for photo-protection and immune response in humans, and implicated in the ...
Ben J. Powell +46 more
core +5 more sources
Colored Surfaces Made of Synthetic Eumelanin [PDF]
Nanomaterials, 2021 The polymerization of 3,4-dihydroxy-L-phenylalanine leads to a carboxylic acid-rich synthetic melanin-like material (poly-L-DOPA). Synthetic melanin most resembles natural eumelanin in chemical structure.
Gema Marcelo +3 more
doaj +4 more sources
Eumelanin Graphene-Like Integration: The Impact on Physical Properties and Electrical Conductivity [PDF]
Frontiers in Chemistry, 2019 The recent development of eumelanin pigment-based blends integrating “classical” organic conducting materials is expanding the scope of eumelanin in bioelectronics.
Roberto Di Capua +6 more
doaj +4 more sources
A Quantum Yield Map for Synthetic Eumelanin [PDF]
The Journal of Chemical Physics, 2005 The quantum yield of synthetic eumelanin is known to be extremely low and it has recently been reported to be dependent on excitation wavelength. In this paper, we present quantum yield as a function of excitation wavelength between 250 and 500 nm ...
Jennifer Riesz +5 more
core +7 more sources
Free energy and stacking of eumelanin nanoaggregates [PDF]
The Journal of Physical Chemistry B, 2021 AbstractEumelanin, a member of the melanin family, is a black-brown insoluble pigment. It possesses a broad range of properties such as antioxidation, free radical scavenging, photo-protection, and charge carrier transportation. Surprisingly, the exact molecular structure of eumelanin remains undefined.
Soltani, Sepideh +3 more
openaire +3 more sources
Structural Model of Eumelanin [PDF]
Physical Review Letters, 2006 Melanin is a ubiquitous pigment in living organisms with multiple important functions, yet its structure is not well understood. We propose a structural model for eumelanin protomolecules, consisting of 4 or 5 of the basic molecular units (hydroquinone, indolequinone, and its tautomers), in arrangements that contain an inner porphyrin ring. We use time-
Kaxiras, Efthimios +3 more
openaire +4 more sources
Pigment Intensity in Dogs is Associated with a Copy Number Variant Upstream of KITLG. [PDF]
, 2020 Dogs exhibit a wide variety of coat color types, and many genes have been identified that control pigment production, appearance, and distribution. Some breeds, such as the Nova Scotia Duck Tolling Retriever (NSDTR), exhibit variation in pheomelanin ...
Affolter, Verena +6 more
core +2 more sources
Nanomaterials and Nanotechnology, 2023 The role of eumelanin as a natural pigment in protecting human skin from ultraviolet (UV) light has drawn vast interest in the research and industrial community.
Oceu Dwi Putri +9 more
doaj +1 more source
Solid-State Electrochemical Energy Storage Based on Soluble Melanin
Electrochem, 2021 Biocompatible and biodegradable powering materials are appealing systems for biomedical and electronic devices. Melanin is a natural and multifunctional material with redox capability, which is of great interest in electrochemical energy storage ...
João V. Paulin +2 more
doaj +1 more source