ArticleThe journal of physical chemistry. A2010
Probing near-infrared photorelaxation pathways in eumelanins and pheomelanins.
Article in The journal of physical chemistry. A, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.
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Who cites it
17 citing papers in PubMed.
- Skin optical properties in the obese and their relation to body mass index: a review.Journal of biomedical optics · 2022Review
- Label-Free Delineation of Human Uveal Melanoma Infiltration With Pump-Probe Microscopy.Frontiers in oncology · 2022Article
- The Photophysics and Photochemistry of Melanin- Like Nanomaterials Depend on Morphology and Structure.Chemistry (Weinheim an der Bergstrasse, Germany) · 2021Review
- Transient absorption microscopy: Technological innovations and applications in materials science and life science.The Journal of chemical physics · 2020Article
- Ultrafast spectral hole burning reveals the distinct chromophores in eumelanin and their common photoresponse.Chemical science · 2019Article
- Transient absorption imaging of hemes with 2-color, independently tunable visible-wavelength ultrafast source.Biomedical optics express · 2017Article
- Anomalous evolution of broadband optical absorption reveals dynamic solid state reorganization during eumelanin build-up in thin films.Scientific reports · 2017Article
- Dual-wavelength pump-probe microscopy analysis of melanin composition.Scientific reports · 2016Article
- Invited Review Article: Pump-probe microscopy.The Review of scientific instruments · 2016Review
- Ultrafast transient absorption of eumelanin suspensions: the role of inverse Raman scattering.Biomedical optics express · 2015Article
- Comparing in vivo pump-probe and multiphoton fluorescence microscopy of melanoma and pigmented lesions.Journal of biomedical optics · 2015Article
- Near-infrared excited state dynamics of melanins: the effects of iron content, photo-damage, chemical oxidation, and aggregate size.The journal of physical chemistry. A · 2014Article
- Imaging microscopic pigment chemistry in conjunctival melanocytic lesions using pump-probe laser microscopy.Investigative ophthalmology & visual science · 2013Article
- Cross-phase modulation spectral shifting: nonlinear phase contrast in a pump-probe microscope.Biomedical optics express · 2012Article
- Two-photon and second harmonic microscopy in clinical and translational cancer research.Annals of biomedical engineering · 2012Review
- In vivo and ex vivo epi-mode pump-probe imaging of melanin and microvasculature.Biomedical optics express · 2011Article
- Pump-probe imaging differentiates melanoma from melanocytic nevi.Science translational medicine · 2011Article
Corrections and comments
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Authors and funding
3 authors.
Funding
Abstract
Ultraviolet-visible spectroscopy readily discerns the two types of melanin pigments (eumelanin and pheomelanin), although fundamental details regarding the optical properties and pigment heterogeneity are more difficult to disentangle via analysis of the broad featureless absorption spectrum alone. We employed nonlinear transient absorption spectroscopy to study different melanin pigments at near-infrared wavelengths. Excited-state absorption, ground-state depletion, and stimulated emission signal contributions were distinguished for natural and synthetic eumelanins and pheomelanins. A starker contrast among the pigments is observed in the nonlinear excitation regime because they all exhibit distinct transient absorptive amplitudes, phase shifts, and nonexponential population dynamics spanning the femtosecond-nanosecond range. In this manner, different pigments within the pheomelanin subclass were distinguished in synthetic and human hair samples. These results highlight the potential of nonlinear spectroscopies to deliver an in situ analysis of natural melanins in tissue that are otherwise difficult to extract and purify.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.