Results 1 to 10 of about 2,975 (190)
Cyclohexene‐Embedded Dicyanomethylene Merocyanines – Consecutive Three‐Component Coupling‐Addition Synthesis and Chromophore Characteristics [PDF]
A concise and efficient consecutive three‐component alkynylation‐addition synthesis of cyclohexene‐embedded dicyanomethylene merocyanines furnishes a small library of dyes in moderate to excellent yield. The dyes possess strong absorption coefficients of
Dr. Julian Papadopoulos +3 more
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Ultrafast photoinduced dynamics of a donor-( $$\mathrm \pi$$ π )bridge-acceptor based merocyanine dye [PDF]
Merocyanine dyes are of great interest amongst researchers due to their nonlinear optical (NLO) properties and solvatochromism. Molecular structure of these dyes constitutes conjugated pathway between the donor and acceptor substituents, with lowest ...
Jianwei Shen +10 more
doaj +2 more sources
Environment-sensing merocyanine dyes for live cell imaging applications. [PDF]
Fluorescent biosensors based on environmentally sensitive dyes enable visualization and quantification of endogenous protein activation within living cells. Merocyanine dyes are especially useful for live cell imaging applications as they are extraordinarily bright, have long wavelengths of excitation and emission, and can exhibit readily detectable ...
MacNevin CJ +6 more
europepmc +4 more sources
Abstract Merocyanine dyes belong to the class of neutral polymethine dyes, where one terminal component is typically found in cyanine dyes and the second obtained from an active methylene compound. The different electron acceptor/donator abilities of the two terminal components have a marked impact on the electronic structure of a ...
openaire +1 more source
Synthesis of Merocyanine Dyes [PDF]
Abstract New 1-ethyl-2-[(2-substituted 3-oxoisoindolin-1-ylidene)methyl]-pyridinium or quinolinium iodide merocyanine dyes were obtained by the reaction of 2-methyl quaternary salts with N-substituted phthalimide in the presence of piperidine.
Abdu E Abdel-Rahman, Zarif H Khalil
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Red-Shifted Environmental Fluorophores and Their Use for the Detection of Gram-Negative Bacteria
Two novel, water-soluble, merocyanine fluorophores were readily prepared by microwave-assisted synthesis. Full optical characterization was performed in a series of protic and aprotic solvents, and the dyes displayed fluorescence in the red region with ...
Alicia Megia-Fernandez +7 more
doaj +1 more source
Merophosphinine and phosphinine dyes were reported as phosphorus atom equivalents of merocyanine and cyanine dyes in the 1960s. Although these dyes are excellent sensitizers for enhancing photographic performance, their development has been considerably ...
Shigeyuki Yamada +2 more
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Dehydroacetic acid and triacetic acid lactone are known to be versatile substrates for the synthesis of a variety of azaheterocycles. However, their fluorinated analogs were poorly described in the literature.
Vladislav V. Fedin +3 more
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The potential of E–Z photoisomerization in molecular organic light-to-thermal conversion and storage in an E–styryl merocyanine system was studied in a polar acidic medium. A photoswitchable styryl merocyanine dye (E)-2-(2-(2-hydroxynaphthalen-1-yl)vinyl)
Aleksey A. Vasilev +3 more
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Supramolecular photosystems can afford important insights into elementary processes in molecular materials. Here, a bis(merocyanine)‐C60 conjugate composed of two covalently tethered electron‐donating merocyanine chromophores and two appended fullerene ...
David Bialas +6 more
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