Intramolecular charge transfer (ICT) that occurs upon photoexcitation of molecules is a vital
process in nature and it has ample applications in chemistry and biology. The ICT process of …

The absorption and fluorescence spectra of substituted coumarins (2-oxo-2 H-chromenes)
were investigated in solvents and in polymer matrices. The substitutions involved were:(1) …

The spectroscopic behavior of the 4 '-dialkylamino-3-hydroxyflavones in protic environments
is very unusual. Previous studies showed that in contrast to other solvatochromic dyes …

Photophysical properties of two 7-aminocoumarin dyes, namely, coumarin 102 (C102) and
coumarin 153 (C153), have been investigated in different aprotic solvents to understand …

The paper presents results of the spectral (absorption and emission) and photophysical
study of 4-aminophthalimide (4-AP) in 1-chloro-n-alkanes (RCl) with which 4-AP interacts …

The effect of both solvent polarity and hydrogen bonding (HB) on the electronic transition
energy of Coumarin 102 (C102) has been examined using the time‐dependent density …

The coumarin molecules with 7-(N, N-diethylamino) substitution and aryl azo (Ar–N= N-) at 3-
position were synthesized, by reacting diazonium salt of substituted amines and 7-(N, N …

Absorption and fluorescence spectra of bichromophoric coumarins were investigated in
different solvents and in polymer matrices. These bichromophoric coumarins were …

Coumarins, which are derivatives of benzopyran, are wellknown laser dyes [1–5] that are
useful probes in a variety of chemical and physicochemical studies because of their superior …

The ultrafast dynamics of a synthesized near-infrared heptamethine cyanine dye has been
studied in the typical alcoholic and aprotic solvents using the femtosecond time-resolved …