Results 61 to 70 of about 25,177 (318)
Basolites: a type of Metal Organic Frameworks highly efficient in the one-pot synthesis of quinoxalines from a-hydroxy ketones under aerobic conditions. [PDF]
, 2019 We report here efficient synthesis of quinoxalines from ophenylendiamine and -hydroxy ketones over commercial Basolites. The concentration and type of acid centres, as CUS sites, together with the porosity of the samples strongly influence the ...
Godino Ojer, Marina +3 more
core +1 more source
Mobility‐Lifetime Products in Organic Infrared Photodiodes with Peak Absorption at 1550 nm
Advanced Electronic Materials, EarlyView.This study analyzes the mobility‐lifetime products in organic infrared photodiodes with different donor‐to‐acceptor ratios to examine charge collection performance. Abstract Infrared photodiodes based on organic semiconductors are promising for low‐cost sensors that operate at room temperature. However, their realization remains hampered by poor device
Bogyeom Seo +7 more
wiley +1 more source
Condensation of 4-hydroxy-2-thiazolines with 1,2-phenylenediamine as a novel effective route to thiazolo[3,4-a]quinoxalines [PDF]
, 2004 Thiazolo[3,4-a]quinoxalin-4-ones were prepared in two steps starting from methyl phenylchloropyruvate using a new strategy for the construction of the ring system. A key step in this new method involves the reaction of 4-hydroxytetrahydrothiazoles with 1,
Gubaidullin, Aidar T +4 more
core +1 more source
Studies in Benzimidazo Thiazolo Quinoxalines and Benzimidazo Thiazino Quinoxalines
, 1970 Benzimidazo (2', 1': 2, 3) thiazolo (4, 5-b) quinoxalines and 7H-benzimidazo (1', 2': 4, 5) (1 : 4) thiazino (2, 3-b) quinoxalines have been synthesised by the condensations of 2-mercapto benzimidazoles with 2 : 3-dichloro quinoxalines and 2-(mercaptomethyl) benzimidazole with 2 : 3-dichloro quinoxalines respectively.
Simran Singh +2 more
openaire +1 more source
Advanced Energy Materials, EarlyView.A combination of morphological, electrical, and spectroscopy techniques is used to evaluate the degradation mechanisms of non‐fullerene (NFA)‐based organic photovoltaics (OPVs). Blends based on Y12 are more stable than Y6, aspeciallyOPVs from FO6‐T:Y12 demonstrated superior stability with an extrapolated T80 of over 2000 hours under maximum power point
Eva Mazzolini +14 more
wiley +1 more source
Efficient Synthesis of Aromatic Quinoxaline Derivatives [PDF]
, 2023 Quinoxaline and its derivatives have many antimicrobial properties that make them possible substitutes for current medication, with abilities including antibacterial, anticancer, antiviral, and antifungal among others [1].
LaRosa, Patrick D.
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Quinoxaline and its Monohydrate [PDF]
Nature, 1946 ALTHOUGH quinoxaline, C8H6N2, was synthesized in 18841,2, and has been mentioned in the literature1–13 several times since that date, it is rather surprising that the existence of quinoxaline monohydrate has not been noticed, the more so since several physico-chemical determinations have been carried out with quinoxaline ; namely, vapour density in ...
openaire +2 more sources
Aggregate, EarlyView.Through the intramolecular hydrogen bonds established by the pyridine ring, we constructed an efficient single‐component multi‐color emitter Bppy‐PTZ. With a stable quasi‐axial conformation in both crystalline and amorphous states, Bppy‐PTZ enabled its organic light‐emitting diodes with color‐tunable emissions, including blue, yellow, and adjustable ...
Xiang Long +9 more
wiley +1 more source
Antioxidant Activity and Oxidation Products of 1,2,3,4- Tetrahydroquinoxalines in Peroxyl Radical Scavenging Reactions, Part I [PDF]
, 2005 This paper studies the antioxidant activity of 1,2,3,4-tetrahydroquinolines, 3,4-dihydro-2H-benzo[1,4]thiazines and 1,2,3,4-tetrahydroquinoxalines in the inhibition of the peroxidation of tetralin induced by an azo initiator.
Nishiyama Tomohiro +5 more
core +1 more source
Angewandte Chemie International Edition, EarlyView.Redox‐active triphenylamine‐appended pyrazinacenes show extreme reversible redox‐coupled switching of their photophysical properties. In their reduced state, absorption and emission bands fall well within the visible region. Oxidation results in a shift in the absorption and fluorescence bands to the near infrared and short‐wave infrared regions while ...
Gary J. Richards +9 more
wiley +1 more source