Excited-state prototropic reactivity in salicylamide and salicylanilide

Electronic Spectra of Salicylamide in Polycrystalline Form and Solid Environment

“…Dual fluorescence of SAM in aqueous solutions of medium acidity at room temperature was obtained previously [6], as well as in our experiments. However, the intensity of shortwave band was very low compared to the longwave one, therefore it was difficult to determine its position.…”

“…1, like in Ref. [6], where the aqueous solutions of SAM were examined. In the ground state, there exist the cis-(a) and trans-conformer (c) of (199) the enol tautomer in which hydrogen atom is located at the hydroxy oxygen.…”

Inequivalence of substitution pairs in hydroxynaphthaldehyde: A theoretical measurement by intramolecular hydrogen bond strength, aromaticity, and excited‐state intramolecular proton transfer reaction

“…7,[21][22][23][24][25] Similar is the case for the corresponding methyl ester derivatives of these naphthoic acids where methyl ester of 3,2-HNA exhibits ESIPT emission, 10,23 but not in case of methyl esters of 1,2-HNA or 2,1-HNA, 10 although all of these compounds have been documented to possess IMHB site. 11,[23][24][25] In case of naphthalene, all the substitution positions are not equivalent and hence, electronic properties depend on the position of the substitution. Our main attention is to find a theoretical measure to investigate how the change of the position of À ÀOH and À ÀCHO groups in naphthalene system brings out a noticeable change in properties of the molecules and also in their behavior upon photoexcitation.…”

Excited State Proton Transfer Reaction of 4-Methyl-2,6-dicarbomethoxyphenol in Some Protic Solvents at Room Temperature and 77K: Interaction with Base

“…Accordingly, these higher alcohols cannot accept protons, particularly when the intramolecular bond is quite strong like that in CMOH. The point to mention here is that in protic solvent a significant population of anions is expected, depending on the protolytic strength of the media (26)(27)(28). In a similar study Acuna et al detected the phenolate ion as a third component in water and lower alcohols (29).…”