Results 61 to 70 of about 23,107 (206)

FEATURES OF DIAZO DYE PHOTODECOMPOSITION IN AQUEOUS SOLUTIONS CONTAINING ZINC, ALUMINUM AND ERBIUM SALTS [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2019
Subject of research.The features of diazo dye Chicago Sky Blue 6B photodecomposition in aqueous solutions containing the salts of zinc, aluminum and erbium were studied.
K. S. Evstropyev   +6 more
doaj   +1 more source

Decoding Tattoo and Permanent Makeup Pigments: Linking Physicochemical Properties to Absorption, Distribution, Metabolism, and Elimination Profiles Using Quantitative Structure–Activity Relationship (QSAR)‐Based New Approach Methodologies (NAMs)

open access: yesAdvanced Intelligent Discovery, EarlyView.
This study applies QSAR‐based new approach methodologies to 90 synthetic tattoo and permanent makeup pigments, revealing systemic links between their physicochemical properties and absorption, distribution, metabolism, and elimination profiles. The correlation‐driven analysis using SwissADME, ChemBCPP, and principal component analysis uncovers insights
Girija Bansod   +10 more
wiley   +1 more source

Photochemical generation of the 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) radical from caged nitroxides by near-infrared two-photon irradiation and its cytocidal effect on lung cancer cells

open access: yesBeilstein Journal of Organic Chemistry, 2019
Novel caged nitroxides (nitroxide donors) with near-infrared two-photon (TP) responsive character, 2,2,6,6-tetramethyl-1-(1-(2-(4-nitrophenyl)benzofuran-6-yl)ethoxy)piperidine (2a) and its regioisomer 2b, were designed and synthesized. The one-photon (OP)
Ayato Yamada   +7 more
doaj   +1 more source

High-spin intermediates of the photolysis of 2,4,6-triazido-3-chloro-5-fluoropyridine

open access: yesBeilstein Journal of Organic Chemistry, 2013
In contrast to theoretical expectations, the photolysis of 2,4,6-triazido-3-chloro-5-fluoropyridine in argon at 5 K gives rise to EPR peaks of just two triplet mononitrenes, two quintet dinitrenes, and a septet trinitrene.
Sergei V. Chapyshev   +3 more
doaj   +1 more source

Dibenzazepine Bridged Network Polymeric Phthalocyanines as Degradable Heterogeneous Photocatalysts

open access: yesAngewandte Chemie International Edition, EarlyView.
Dibenzazepine photodynamic bridge has been introduced to zinc and cobalt networks phthalocyanines (NP‐Pcs) to obtain degradable heterogeneous photocatalysts. For the first time, light irradiation plays a key role in “design, use and degradation” of NP‐Pcs.
Erem Ahmetali   +4 more
wiley   +1 more source

New light on vitamin B12: The adenosylcobalamin-dependent photoreceptor protein CarH

open access: yesSouth African Journal of Science, 2016
Adenosylcobalamin (AdoCbl), or coenzyme B12, is a cofactor for enzymes important in metabolism in humans (and other mammals) and bacteria. AdoCbl contains a Co-C bond and is extremely light sensitive, but, until recently, this light sensitivity appeared ...
Susan M. Chemaly
doaj   +1 more source

Controlled Delivery and Light‐Induced Release of Magic Spot Nucleotides in Escherichia coli

open access: yesAngewandte Chemie International Edition, EarlyView.
We synthesized photocaged, clickable and isotope‐labeled “magic spot” Nucleotides and delivered them into Escherichia coli comparing different approaches. Light‐controlled release inside living cells enabled tracking of their conversion from pppGpp to ppGpp by capillary electrophoresis mass spectrometry and revealed their impact on the growth rate of a
Christoph Popp   +12 more
wiley   +1 more source

Photolysis of Organic Disulphides [PDF]

open access: yesNature, 1948
THE reactions following light absorption by pure organic disulphides in solution have not been studied, although the reactions are of great importance in the chemistry of wool, affecting both felting and shrinkage of the wool1,2. Similar reactions occur in irradiated milk3 and in petrol4.
openaire   +2 more sources

Mapping the Reactivity of the C═C Bond of Cyclic Enol Ether Derivatives of Sugars: Nucleophilicity Parameters of Glycals

open access: yesAngewandte Chemie International Edition, EarlyView.
Endo or Exo? The first quantitative kinetic mapping of the nucleophilic reactivity of endo‐ and exo‐glycal compounds highlighted that endo‐glycals are typically 102 times less reactive than their corresponding parent cyclic enol ethers while exo‐glycals are 103 more nucleophilic. This experimental and computational structure–reactivity study highlights
Sophie Rodrigues   +7 more
wiley   +1 more source

Photolysis of 3-hydroxyisoxazoles.

open access: yesAgricultural and Biological Chemistry, 1974
Photolysis of 3-hydroxy-5-phenylisoxazole in methanol with a low-pressure mercury lamp afforded 5-phenyl-4-oxazolin-2-one, together with small amounts of benzoic acid and benzoylacetamide. Similarly, 3-hydroxy-5-methylisoxazole in distilled water afforded 5-methyl-4-oxazolin-2-one as the major product.
Masayuki Nakagawa   +2 more
openaire   +2 more sources

Home - About - Disclaimer - Privacy