Results 61 to 70 of about 9,421 (186)
TWO-PHOTON EXCITATION SPECTRA OF RETINYL POLYENES IN RANDOM GLASSES [PDF]
, 1977 Author Institution: Department of Chemistry, Michigan State UniversityTwo-photon excitation spectra of several retinyl polyenes (all-trans retinol, all-trans retinal and all-trans anhydrovitamin A), and of diphenyloctatetraene in random glass matrices at
Leroi, G. E., Fang, Howard L.
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Sudden Polarization in Push-Pull Polyenes: A Model Exact Study [PDF]
, 1990 In substituted polyenes, it has been conjectured that a large charge separation occurs when a rotation of $90^o$ is carried out about a double bond.
Albert, I. D. L. +3 more
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ChemSusChem, Volume 19, Issue 14, 29 July 2026.Hydrocarbon α,ω‐dienes are mainly produced from steam‐cracking derivatives, but high costs, complexity, and environmental impact limit their use. This review highlights sustainable paths from biomass and plastic upcycling, and surveys catalytic transformations into carbocycles and specialty polymers, emphasizing their role as modular building blocks ...
Rosa Villaccio, Giuseppe Leone
wiley +1 more source
Mass Spectrometry and Gas-phase Ion Chemistry of Dienes and Polyenes [PDF]
, 2000 Kuck D, Mormann M. Mass Spectrometry and Gas-phase Ion Chemistry of Dienes and Polyenes. In: Rappoport Z, ed. The Chemistry of Dienes and Polyenes. Vol. 2. The Chemistry of Functional Groups.
Mormann, Michael +2 more
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Angewandte Chemie, Volume 138, Issue 31, 27 July 2026.Oberfläche enthüllt: Verkokung ist die zentrale Ursache für die Deaktivierung von Zeolithkatalysatoren. Mithilfe von In‐situ‐XPS in Verbindung mit ergänzenden Methoden identifizieren wir Unterschiede in der Bildungskinetik und Zusammensetzung von Oberflächenkoks auf industriell relevanten ZSM‐5‐Katalysatoren während der MTH‐Umwandlung und zeigen damit ...
Luca Artiglia +6 more
wiley +1 more source
Amphothericin B and other polyenes - discovery, clinical use, mode of action and drug resistance [PDF]
, 2020 Although polyenes were the first broad spectrum antifungal drugs on the market, after 70 years they are still the gold standard to treat a variety of fungal infections. Polyenes such as amphotericin B have a controversial image.
Lagrou, Katrien +7 more
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Angewandte Chemie International Edition, Volume 65, Issue 31, 27 July 2026.Coking is the central source of deactivation of zeolite catalysts. Using in situ XPS along with complementary methods, we identify differences in the formation kinetics and composition of surface coke on industrially relevant ZSM‐5 catalysts during MTH conversion, demonstrating the strong potential of this technique for studying catalyst deactivation ...
Luca Artiglia +6 more
wiley +1 more source
THE DISTRIBUTION OF POLYENES IN THE SHELL OF ARCTICA ISLANDICA FROM NORTH ATLANTIC LOCALITIES: A CONFOCAL RAMAN MICROSCOPY STUDY [PDF]
, 2014 Many of the pigments that are widely found in coloured parts of mollusc shells are polyenes, i.e. molecules with a central polyenic chain (carbon-carbon single and double bonds).
Stemmer, Kristina, Nehrke, Gernot
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Plasma Oscillations in Large Ring Polyenes [PDF]
, 1972 The possibility of collective motion of the :n:-electron system has been examined by many authors1- 3• In this context it is interesting to note that much more attention has been devoted to the linear conjugated systems than to the ring ones.
A. Ažman +3 more
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Excited State Potential Energy Surfaces of Polyenes and Protonated Schiff Bases [PDF]
, 2016 The potential energy surface of the 1Bu and 1A′ states of all-trans-polyenes and the corresponding protonated Schiff bases have been studied at density functional theory and coupled cluster levels. Linear polyenes and protonated Schiff bases with 4 to 12
Robert Send (1591123) +3 more
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