Results 181 to 190 of about 57,862 (318)

Functional Optical Fibers with Tailored Side Emission from Modified Rod‐in‐Tube Preforms

open access: yesAdvanced Photonics Research, EarlyView.
A modified rod‐in‐tube method enables fabrication of functional optical fibers with tailored light‐diffusing properties. The approach incorporates optically active species at a well‐defined radial position within an otherwise homogeneous fiber core. Using lanthanide ions and noble metal nanoparticles as active species demonstrates wavelength conversion
Jan Schröder   +4 more
wiley   +1 more source

PHOTOCHEMISTRY OF PROTEINS [PDF]

open access: yesPhotochemistry and Photobiology, 1975
C. Hasselmann, G. Laustriat
openaire   +3 more sources

Biomimetic Orthogonal Removal of Arylacyl Protecting Groups from the C‐Terminus of Substituted Amino Acids and Oligopeptides via Flavin N(5)‐iminium Covalent Adducts

open access: yesAdvanced Synthesis &Catalysis, EarlyView.
Abstract Flavin co‐factors and other flavin derivatives are traditionally associated with one‐ or two‐electron redox reactions. Flavins also form covalent intermediates with a variety of substrates. While extensive attention has focused on reactions at the C(4a) position of the flavin ring, recent interest has shifted toward the dynamic potential of ...
Tetiana Pavlovska   +3 more
wiley   +1 more source

Tunable Preparation of β‐Substituted Alkenoate Esters via Radical Alkenylation of C(sp3)–H Bonds with Allenoates

open access: yesAdvanced Synthesis &Catalysis, EarlyView.
Abstract A photocatalytic strategy for the radical alkenylation of aliphatic C(sp3)–H bonds with 2,3‐allenoate esters is described. The protocol takes place upon irradiation of the reaction mixture in the presence of the decatungstate anion, which triggers C−H cleavage in the chosen aliphatic substrates.
Alexandra Jorea   +2 more
wiley   +1 more source

Gram‐Scale Photocatalysis with a Stable and Recyclable Chromium(III) Photocatalyst in Acetonitrile and in Water

open access: yesAdvanced Synthesis &Catalysis, EarlyView.
Abstract The use of stable photosensitizers made on a multigram‐scale from cheap and available starting materials offers an extraordinary opportunity to translate small‐scale proof‐of‐concept photoreactions to widespread applications in non‐specialized laboratories, thereby promoting the implementation of light‐driven syntheses.
Steven Sittel   +5 more
wiley   +1 more source

Toxicity and Antigenotoxic Effect of Hispolon Derivatives: Role of Structure in Modulating Cellular Redox State and Thioredoxin Reductase

open access: yesACS Omega, 2018
Pogakula Chethna   +9 more
doaj   +1 more source

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