scholarly journals Aqueous singlet oxygen reaction kinetics of furfuryl alcohol: effect of temperature, pH, and salt content

2017 ◽  
Vol 19 (4) ◽  
pp. 507-516 ◽  
Author(s):  
Elena Appiani ◽  
Rachele Ossola ◽  
Douglas E. Latch ◽  
Paul R. Erickson ◽  
Kristopher McNeill
Keyword(s):  
Aqueous Solution ◽  
Steady State ◽  
Singlet Oxygen ◽  
Furfuryl Alcohol ◽  
Salt Content ◽  
Effect Of Temperature ◽  
Time Resolved ◽  
Value Determination ◽  
Singlet Oxygen Reaction ◽  
Kinetics Of

The rate constant for the reaction between furfuryl alcohol (FFA) and singlet oxygen (1O2) in aqueous solution was measured as a function of temperature, pH and salt content employing both steady-state photolysis (β value determination) and time-resolved singlet oxygen phosphorescence methods.

Temperature Effect on the Two-Dimensional Phase Transition Kinetics of Adenine Adsorbed at the Hg Electrode/Aqueous Solution Interface

2003 ◽  
Vol 68 (8) ◽  
pp. 1407-1419 ◽  
Author(s):  
Claudio Fontanesi ◽  
Roberto Andreoli ◽  
Luca Benedetti ◽  
Roberto Giovanardi ◽  
Paolo Ferrarini
Keyword(s):  
Phase Transition ◽  
Aqueous Solution ◽  
Phase Change ◽  
Temperature Effect ◽  
Transition Rate ◽  
Effect Of Temperature ◽  
Two Dimensional ◽  
Solution Interface ◽  
Phase Transition Kinetics ◽  
Kinetics Of

The kinetics of the liquid-like → solid-like 2D phase transition of adenine adsorbed at the Hg/aqueous solution interface is studied. Attention is focused on the effect of temperature on the rate of phase change; an increase in temperature is found to cause a decrease of transition rate.

Improve Persistent Luminescence in Pressure-tuned CsPbBr3 Nanocrystals by Ce3+ Doping

2021 ◽  
Author(s):  
Bao Liu ◽  
Meng Tian ◽  
Yang Gao ◽  
Pengyu Zhou ◽  
Kailin Chi ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Steady State ◽  
Photoluminescence Spectroscopy ◽  
Persistent Luminescence ◽  
Time Resolved ◽  
Novel Strategy ◽  
Time Resolved Photoluminescence ◽  
Kinetics Of

The pressure-dependent photoluminescence kinetics of CsPbBr3:Ce quantum dots was investigated by steady-state and time-resolved photoluminescence spectroscopy. Here, we propose a novel strategy to improve the persistent luminescence of CsPbBr3 quantum...

scholarly journals Effect of temperature and chloride on steady-state inhibition of angiotensin I-converting enzyme by enalaprilat and ramiprilat

1990 ◽  
Vol 272 (2) ◽  
pp. 415-419 ◽  
Author(s):  
A Skoglof ◽  
P O Göthe ◽  
J Deinum
Keyword(s):  
Steady State ◽  
Amino Acid ◽  
Protein Concentration ◽  
Chloride Concentration ◽  
Effect Of Temperature ◽  
Converting Enzyme ◽  
Angiotensin I ◽  
Inhibitor Binding ◽  
Angiotensin I Converting Enzyme ◽  
Kinetics Of

The kinetics of the steady-state inhibition of angiotension I-converting enzyme (EC 3.4.15.1) at 25 degrees C and 37 degrees C with enalaprilat and ramiprilat can be simulated, assuming only one inhibitor-binding site, consistent with a 1:1 stoichiometry if the protein concentration was determined by amino acid analysis. In this temperature range the apparent inhibition constants for ramiprilat and enalaprilat were roughly doubled by a decrease in the chloride concentration from 0.300 M to 0.120 M.

Fast time-resolved i.r. spectroscopy of biological molecules in aqueous solution: The reaction kinetics of myoglobin with carbon monoxide

1988 ◽  
Vol 44 (12) ◽  
pp. 1309-1314 ◽  
Author(s):  
Andrew J. Dixon ◽  
Paul Glyn ◽  
Michael A. Healy ◽  
P.Michael Hodges ◽  
Timothy Jenkins ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Carbon Monoxide ◽  
Reaction Kinetics ◽  
Biological Molecules ◽  
Fast Time ◽  
Time Resolved ◽  
Kinetics Of

scholarly journals Photophysical properties of two novel tetraphenylporphyrins substituted by guanidiniocarbonyl and monocyclic guanidine groups

2001 ◽  
Vol 3 (3) ◽  
pp. 147-151 ◽  
Author(s):  
Pavel Kubát ◽  
Kamil Lang ◽  
Vladimír Král ◽  
Franz P. Schmidtchen
Keyword(s):  
Steady State ◽  
Quantum Yield ◽  
Singlet Oxygen ◽  
Electronic Absorption Spectra ◽  
Photophysical Properties ◽  
Soret Band ◽  
Monomeric Form ◽  
High Quantum Yield ◽  
Time Resolved ◽  
J Aggregates

Photophysical properties of two novel guanidiniocarbonyl (I) and monocyclic guanidine (II) tetraphenylporphyrins and their interaction with DNA were investigated by steady-state and time-resolved absorption and emission spectroscopies.Istays predominantly monomeric in aqueous solutions. It produces singlet oxygen with high quantum yield(ΦΔ=0.67)that is typical for monomeric porphyrins. The electronic absorption spectra ofIare not influenced by interaction with DNA. This is in contrast with monomeric tetratolylporphyrins bearing phosphonium,ammonium and pyridinium groups where the formation of stable complexes with DNA is accompanied by a characteristic red shift of the Soret band.IIextensively forms Hand J-aggregates,which do not produce singlet oxygen(ΦΔ<0.01). In the presence of DNA only a small fraction ofIIremains in monomeric form that is bound to DNA exterior.

scholarly journals Ultrafast kinetics of linkage isomerism in Na2[Fe(CN)5NO] aqueous solution revealed by time-resolved photoelectron spectroscopy

2017 ◽  
Vol 4 (4) ◽  
pp. 044031 ◽  
Author(s):  
Azhr A. Raheem ◽  
Martin Wilke ◽  
Mario Borgwardt ◽  
Nicholas Engel ◽  
Sergey I. Bokarev ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Photoelectron Spectroscopy ◽  
Time Resolved ◽  
Linkage Isomerism ◽  
Kinetics Of
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