Results 151 to 160 of about 220,193 (199)

Products of Degradation of Black Phosphorus in Protic Solvents

ACS Nano, 2018
Deterioration of the surface of black phosphorus (BP) caused by ambient atmosphere is an undesired process, limiting broader use of BP in many areas. The mechanism of BP degradation was explained theoretically, and the oxidized materials were thoroughly characterized experimentally.
Jan Plutnar, Zdeněk Sofer, Martin Pumera   +2 more
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Photochemistry of 5-aminoquinoline in protic and aprotic solvents

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2011
Photophysical properties of 5-aminoquinoline (5AQ) have been investigated in various non-polar and polar (protic and aprotic) solvents using steady state and time resolved fluorescence. In aprotic solvents, the spectral maxima depend on the polarity. However, in protic solvents both the fluorescence intensity as well decay time show decrease depending ...
Jagat P, Bridhkoti, Hirdyesh, Mishra, H C, Joshi, Sanjay, Pant   +3 more
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Photophysical properties of safranine O in protic solvents

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2004
Spectroscopic and photophysical properties of safranine O (Sf) were investigated in binary water/solvent mixtures. It was found that these properties are strongly solvent-dependent. A blue shift is observed for both the ground-state absorption and the triplet-triplet main absorption band when the solvent polarity augments.
María L, Gómez, Carlos M, Previtali, Hernán A, Montejano   +2 more
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Hydrogen-Bonded Encapsulation Complexes in Protic Solvents

Journal of the American Chemical Society, 2004
We describe here the behavior of the hydrogen-bonded capsule 1.1 and its complexes in protic solvents. The kinetics and thermodynamics of the encapsulation process were determined through conventional (1)H NMR methods. The enthalpies and entropies of encapsulation are both positive, indicating a process that liberates solvent molecules.
Toru, Amaya, Julius, Rebek
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Rotational diffusion in aprotic and protic solvents

Chemical Physics, 1978
Abstract We present the orientational relaxation times in protic and aprotic solvents for rose bengal in its lowest excited singlet state. The method uses a mode locked dye laser for polarized excitation, and time correlated single photon counting for determination of the time resolved polarized fluorescence.
Kenneth G. Spears, Laurence E. Cramer
openaire   +1 more source

PHOTOCHEMISTRY OF 1,2-DIPHENYLCYCLOBUTENE IN PROTIC SOLVENTS

Chemistry Letters, 1974
Abstract Irradiation of 1,2-diphenylcyclobutene (1) in methanol solution afforded a mixture of α-(1-phenylcyclopropyl)benzyl methyl ether and 1,2-diphenylcyclobutyl methyl ether. In acetic acid corresponding esters were obtained. Evidence supporting the involvement of a singlet species was obtained by the finding that the fluorescence of
Masako Sakuragi, Masaki Hasegawa
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Polyglycerol‐Tagged Molecular Clips as Receptors in Protic Solvents

European Journal of Organic Chemistry, 2012
AbstractFour charge‐neutral molecular clips modified with polyglycerol (PG) dendrons of first and second generation and with hyperbranched polyglycerols (HPG) in the central unit as solubilizing units were synthesized. Their use as supramolecular hosts for the complexation of several guest molecules such as caffeine, N‐methylnicotinamide iodide, and ...
Zieringer, Maximilian, Casas Cartagena, Marçal, Burakowska, Ewelina, Taktikos, Johannes, Neuthe, Katja, Bandmann, Heinz, Klärner, Frank-Gerrit, Haag, Rainer   +7 more
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Solvation properties of protic ionic liquids and molecular solvents

Physical Chemistry Chemical Physics, 2020
Ionic liquids (ILs) are highly tailorable solvents with many potential applications. Knowledge about their solvation properties is highly beneficial in the utilization of ILs for specific tasks, though for many ILs this is currently unknown.
Dilek Yalcin, Calum J. Drummond, Tamar L. Greaves   +2 more
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Solvent-mediated molar conductivity of protic ionic liquids

Physical Chemistry Chemical Physics, 2015
The molar conductivity, Λ m , of protic ionic liquids (PILs) in molecular solvents is measured at 298.15 K.
Sachin, Thawarkar, Nageshwar D, Khupse, Anil, Kumar   +2 more
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Solvation of acetone in protic and aprotic solvents and binary solvent mixtures

Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases, 1985
The infrared spectra of dilute solutions of acetone in a range of protic and aprotic solvents have been measured in the C—O stretch region. Band maxima are shown to correlate linearly with 13C n.m.r. shifts for the carbonyl carbon and, after suitable corrections, with solvent acceptor numbers.
Martyn C. R. Symons, Graham Eaton
openaire   +1 more source