|
|||||
|
|
Excited State Intramolecular Proton Transfer in Methyl and Methoxy Substituted Salicylic Acid |
|
| Authors: | SUBAN Kumar Sahoo RATI Kanta Bera BIKRAM Kishore Kanungo MINATI Baral |
| Affiliation: | 1. Department of Applied Chemistry,Sardar Vallabhbhai National Institute of Technology (SVNIT),Surat,Gujrat,India 2. Department of Chemistry,Sant Longowal Institute of Engineering & Technology (SUET),Longowal,Punjab,India 3. Department of Chemistry,National Institute of Technology (N/T),Kurukshetra,Haryana,India |
| Abstract: | 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. |
| Keywords: | 3-methylsalicylic acid 3-methoxysalicylic acid excited state intramolecular proton transfer fluorescence spectroscopy AM1 DFT |
| 本文献已被 万方数据 等数据库收录！ | |