Journal ArticleDOI
Synthesis and spectroscopic properties of benzo- and naphthofuryl-3-hydroxychromones
TLDR
In this paper, four new 3-hydroxy-chromone derivatives bearing benzofuran and naphthofuran groups were synthesized and they show bathochromic absorption shifts with the focus of designing new fluorescent probes.Abstract:
With the focus of designing new fluorescent probes, four new 3-hydroxy-chromone derivatives bearing benzofuran and naphthofuran groups were synthesized They show bathochromic absorption shifts relread more
Citations
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Excited-state proton coupled charge transfer modulated by molecular structure and media polarization
TL;DR: With knowledge of the mechanisms of these processes, desired rates and directions can be achieved, and thus the multiple emission spectral features can be harnessed.
Journal ArticleDOI
Multiparametric probing of intermolecular interactions with fluorescent dye exhibiting excited state intramolecular proton transfer
TL;DR: In this paper, a detailed spectroscopic study of 4′-diethylamino-3-hydroxyflavone in a set of 21 representative solvents demonstrates that the Stokes shift of the N* band correlates strongly with the Lippert function, and this correlation does not depend on the effects of intermolecular H-bonding.
Journal ArticleDOI
Electrochromic modulation of excited-state intramolecular proton transfer: the new principle in design of fluorescence sensors.
TL;DR: A new phenomenon is described - a very strong internal electrochromic modulation of the excited-state intramolecular proton transfer (ESIPT) reaction, which produces a dramatic change of emission color and suggests a new principle of designing the ultrasensitive electro Chromic two-wavelength fluorescence sensors and probes for analytical chemistry, macromolecular science, and cellular biology.
Journal ArticleDOI
Modulation of the solvent-dependent dual emission in 3-hydroxychromones by substituents
Andrey S. Klymchenko,Andrey S. Klymchenko,Vasyl G. Pivovarenko,Turan Ozturk,Alexander P. Demchenko +4 more
TL;DR: In this article, the correlation between 3-hydroxychromones (3HCs) structure and spectroscopic properties has been studied, and a new generation of two-band fluorescent sensors based on 3-HCs that operate by the ESIPT mechanism has been proposed.
Journal ArticleDOI
Elimination of the Hydrogen Bonding Effect on the Solvatochromism of 3-Hydroxyflavones
TL;DR: The role of solute−solvent hydrogen bonding in modulating the excited-state intramolecular proton transfer (ESIPT) reaction in 3-hydroxyflavone derivatives was discussed in this paper.
References
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Journal ArticleDOI
Excited state proton-transfer spectroscopy of 3-hydroxyflavone and quercetin
TL;DR: In this article, the double minimum hydrogen-bonding potential of 3-hydroxyflavone and quercetin at room temperature in solution has been used to explain the luminescence of these molecules at 77 K in 2-methylbutane rigid matrix.
Journal ArticleDOI
Direct observation of fast proton transfer: femtosecond photophysics of 3-hydroxyflavone
TL;DR: In this paper, the first investigation of the fast excited-state intramolecular proton transfer of 3-hydroxyflavone was reported, with femtosecond time resolution of 240±50 fs in a nonpolar solvent environment.
Journal ArticleDOI
Hydrostatic pressure induces hydrocarbon chain interdigitation in single-component phospholipid bilayers.
TL;DR: At pressures higher than the isothermal liquid-crystalline to gel transition pressure, a new pressure-induced phase transition was observed for DPPC and DSPC in which the hydrocarbon chains from apposing monolayers become interdigitated with the chains occupying a cross-sectional area approximately equal to 5% less than in the gel phase.
Journal ArticleDOI
Proton transfer dynamics in substituted 3‐hydroxyflavones: Solvent polarization effects
Timothy C. Swinney,D. F. Kelley +1 more
TL;DR: In this article, the authors analyzed solvent-dependent excited state proton transfer (ESPT) rates in acetonitrile/benzene solvent mixtures using an Onsager cavity model.