Results 81 to 90 of about 15,215 (310)
Melanin Made by Dopamine Oxidation: Thin Films and Interactions with Polyelectrolyte Multilayers [PDF]
arXiv, 2014 The spontaneous oxidation of dopamine in slightly alkaline solutions was investigated on the basis of the work of Lee and others [Science, 318:426-430, 2007], and the reaction product was identified as dopamine-melanin. The ability of melanin to covalently bind amine functional groups was confirmed by quantification of the corresponding binding sites ...
arxiv
Quantitative scattering of melanin solutions [PDF]
, 2005 The optical scattering coefficient of a dilute, well solubilised eumelanin solution has been accurately measured as a function of incident wavelength, and found to contribute less than 6% of the total optical attenuation between 210 and 325nm. At longer wavelengths (325nm to 800nm) the scattering was less than the minimum sensitivity of our instrument.
arxiv +1 more source
Advanced Science, EarlyView.Targeted regulation of pyroptosis to modulate the immune landscape is a novel design strategy for cancer immunotherapy and anti‐inflammatory treatment. Pyroptosis, as a double‐edged sword, underscores the importance of optimizing the design strategy of functional materials and appropriately activating pyroptosis for the effective treatment of diseases.
Luyao Tian +5 more
wiley +1 more source
GENES DETERMINING THE SYNTHESIS OF LAVONOID AND MELANIN PIGMENTS IN BARLEY
Вавиловский журнал генетики и селекции, 2018 In addition to the green color caused by chlorophyll, grain and vegetative organs of barley can be colored by compounds of phenolic nature, such as melanins and lavonoids, which include anthocyanins, proanthocyanidins. Due to the wide biological activity
O. Yu. Shoeva +2 more
doaj +1 more source
Synthesis of water-soluble melanin [PDF]
arXiv, 2015 Melanins are promising materials for organic bioelectronics devices like transistors, sensors and batteries. However, in general, melanin either natural or synthetic has low solubility in most solvents. In this study, the chemical structural changes of melanin synthesized, by the auto oxidation of L-DOPA, are analyzed for a new synthetic procedure ...
arxiv
Pathloss modeling for in-body optical wireless communications [PDF]
arXiv, 2021 Optical wireless communications (OWCs) have been recognized as a candidate enabler of next generation in-body nano-scale networks and implants. The development of an accurate channel model capable of accommodating the particularities of different type of tissues is expected to boost the design of optimized communication protocols for such applications.
arxiv
Hydrogel‐Based Smart Materials for Wound Healing and Sensing
Aggregate, EarlyView.The graphical abstract illustrates the role of hydrogel‐based flexible materials in advancing biomedical applications, including wound healing, point‐of‐care diagnostics, smart patches, and wearable devices. Hydrogels are particularly promising in modern wound care due to their high‐water content, flexibility, and biocompatibility.
Thi Kim Ngan Duong +11 more
wiley +1 more source
Frontiers in Chemistry, 2019 Melanin denotes a variety of mammalian pigments, including the dark electrically conductive eumelanin and the reddish, sulfur-containing, pheomelanin.
Ludovico Migliaccio +7 more
doaj +1 more source
Electronic Properties of Random Polymers: Modelling Optical Spectra of Melanins [PDF]
arXiv, 2003 Melanins are a group of complex pigments of biological origin, widely spread in all species from fungi to man. Among diverse types of melanins, the human melanins, eumelanins,are brown or black nitrogen-containing pigments, mostly known for their photoprotective properties in human skin.
arxiv
A Quantum Yield Map for Synthetic Eumelanin [PDF]
, 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, showing it to be a factor of 4 higher at 250 nm than at 500 nm.
arxiv +1 more source