Excited State Intramolecular Proton Transfer in Methyl and Methoxy Substituted Salicylic Acid

Autor:	Baral Minati, Kanta Bera Rati, Kumar Sahoo Suban, Kishore Kanungo Bikram
Rok vydání:	2009
Předmět:	chemistry.chemical_compound chemistry Cyclohexane Hydrogen bond Excited state Excited state intramolecular proton transfer General Chemistry Photochemistry Triethylamine Fluorescence Salicylic acid Fluorescence spectroscopy
Zdroj:	Chinese Journal of Chemistry. 27:1897-1902
ISSN:	1614-7065 1001-604X
DOI:	10.1002/cjoc.200990318
Popis:	The excited state intramolecular proton transfer (ESIPT) processes in 3-methylsalicyclic acid (3-MeSA) and 3-methoxysalicyclic acid (3-MeOSA) have been investigated in cyclohexane medium by emission spectroscopic techniques. The ESIPT process was characterized in 3-MeSA from the large Stokes fluorescent band (455 nm), but it was suppressed by 3-MeOSA in cyclohexane. The ESIPT process was found to be accelerated both in 3-MeSA and 3-MeOSA in the presence of a hydrogen bond accepting agent, triethylamine (TEA). Further, theoretical calculations were carried out at the ground and excited states to complement the experimental evidences.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::dfca34302f3310dadaf600a9b3fb82f4 https://doi.org/10.1002/cjoc.200990318 Zobrazit plný text záznamu Plný text