[引用][C] Kinetics and mechanism of photoprotonation of coumarin-102 by sulfuric acid in ethanol
SI Druzhinin, BD Bursulaya, BM Uzhinov - Journal of Applied …, 1993 - Springer
Oxoaromatic compounds are known to be weak organic bases. In the ground electronic
state they are protonated in very acidic media (pH< 0)[1-4]. On excitation the basicity of …
state they are protonated in very acidic media (pH< 0)[1-4]. On excitation the basicity of …
The photostability and fluorescence of hydroxycoumarins in aprotic solvents
GJ Smith, CL Dunford, PB Roberts - Journal of Photochemistry and …, 2010 - Elsevier
The absorption and fluorescence spectra of three hydroxycoumarins have been determined
in anhydrous dimethylsulfoxide, tetrahyrofuran and acetonitrile. Minor absorption and …
in anhydrous dimethylsulfoxide, tetrahyrofuran and acetonitrile. Minor absorption and …
Fast dynamic excited state proton transfer (ESPT) reaction of weak oxoaromatic bases. Aminocoumarins with fixed amino group
BD Bursulaya, SI Druzhinin, BM Uzhinov - Journal of Photochemistry and …, 1995 - Elsevier
The excited state protonation of the carbonyl group of 7-aminocoumarins, cotaining a 7-
amino group fixed in the yulolidine fragment, is an irreversible diffusion-limited process in …
amino group fixed in the yulolidine fragment, is an irreversible diffusion-limited process in …
Excited-state reactions of coumarins in aqueous solutions. I. The phototautomerization of 7-hydroxycoumarin and its derivative.
T Moriya - Bulletin of the Chemical Society of Japan, 1983 - jlc.jst.go.jp
The kinetics and mechanism of the reaction in the photo-excited state of 7-hydroxycoumarin
and its derivative have been studied in aqueous solutions by means of measuring the …
and its derivative have been studied in aqueous solutions by means of measuring the …
Solvation and protonation of coumarin 102 in aqueous media: a fluorescence spectroscopic and theoretical study
The ground-and excited-state protonation of Coumarin 102 (C102), a fluorescent probe
applied frequently in heterogeneous systems with an aqueous phase, has been studied in …
applied frequently in heterogeneous systems with an aqueous phase, has been studied in …
Effect of substituents on the fluorescence and absorption spectra of coumarins
R Giri, SS Rathi, MK Machwe, VVS Murti - Spectrochimica Acta Part A …, 1988 - Elsevier
The absorption and fluorescence emission of substituted coumarins have been studied in
different solvents. It is observed that the substituents alter both the absorption and …
different solvents. It is observed that the substituents alter both the absorption and …
A spectroscopic study on ground-and excited-state proton transfer reactions of coumarin derivatives
RT Kuznetsova, NS Savenkova, TN Kopylova… - High Energy …, 2003 - Springer
Abstract Interaction of Coumarin 1, its 3-aldehyde derivative, and biscoumarin with solvents
of varying acidity (water and ethanol with an alkali or acid admixture) was studied by …
of varying acidity (water and ethanol with an alkali or acid admixture) was studied by …
Fluorescence spectra of 3-cyano-4-methyl-7-hydroxycoumarin and its acid-base behavior in the excited state
M Takakusa - Journal of Physical Chemistry, 1979 - ACS Publications
Fluorescence spectra of 3-cyano-4-methyl-7-hydroxycoumarin were measured in ethanolic
solutions containing various amounts of water and acid. Spectra composed of two bands …
solutions containing various amounts of water and acid. Spectra composed of two bands …
Effect of NaCl Salts on the Activation Energy of Excited-State Proton Transfer Reaction of Coumarin 183
Coumarin 183 (C183) was used as a photoacid to study excited-state proton transfer (ESPT)
reactions. Here, we studied the effect of ions on the ESPT of C183 in aqueous NaCl …
reactions. Here, we studied the effect of ions on the ESPT of C183 in aqueous NaCl …
Excited-state protonation kinetics of coumarin 102
AJ Campillo, JH Clark, SL Shapiro, KR Winn… - Chemical Physics …, 1979 - Elsevier
The rate constant for protonation of the electronically excited state of coumarin 102 in water
has been determined to be (1, 4× 0.4)× 10 10 mol− 1 s− 1 using picosecond spectroscopy …
has been determined to be (1, 4× 0.4)× 10 10 mol− 1 s− 1 using picosecond spectroscopy …