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Cyclohexene‐Embedded Dicyanomethylene Merocyanines – Consecutive Three‐Component Coupling‐Addition Synthesis and Chromophore Characteristics [PDF]

open access: yesChemistryOpen, 2023
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
doaj   +2 more sources

Ultrafast photoinduced dynamics of a donor-( $$\mathrm \pi$$ π )bridge-acceptor based merocyanine dye [PDF]

open access: yesScientific Reports, 2022
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]

open access: yesBioconjug Chem, 2013
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

Merocyanine dyes [PDF]

open access: yesPhysical Sciences Reviews, 2021
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]

open access: yesBulletin of the Chemical Society of Japan, 1978
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
openaire   +1 more source

Red-Shifted Environmental Fluorophores and Their Use for the Detection of Gram-Negative Bacteria

open access: yesChemosensors, 2021
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

Fluorinated Merophosphinine and Phosphinine Dyes: Synthesis and Evaluation of UV-Visible Light Absorption Properties

open access: yesCompounds, 2023
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
doaj   +1 more source

Reactions of Trifluorotriacetic Acid Lactone and Hexafluorodehydroacetic Acid with Amines: Synthesis of Trifluoromethylated 4-Pyridones and Aminoenones

open access: yesMolecules, 2022
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
doaj   +1 more source

EZ Photoisomerization in Proton-Modulated Photoswitchable Merocyanine Based on Benzothiazolium and o-Hydroxynaphthalene Platform

open access: yesPhotochem, 2023
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
doaj   +1 more source

Supramolecular p/n‐heterojunction of C60‐functionalized bis(merocyanine) quadruple stack: A model system for charge carrier separation and recombination in organic solar cells

open access: yesNatural Sciences, 2022
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
doaj   +1 more source

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