Kim, Sung Hyun Jung, Eun Joo So, Eun Mi Shen, Chang Zhe Chun, Hyun Ja Kim, Young Man Kim, Il Kwang 2024-01-21T02:30:57Z 2024-01-21T02:30:57Z 2021-09-01 2006-09-20 0253-2964 https://pubs.kist.re.kr/handle/201004/135115 The electrochemical reduction of coumarin, 7-acetoxy-4-methyl coumarin (AMC), and 7-acetoxy-4-bromomethyl coumarin (ABMC), in 0.1 M tetraethyl ammonium perchlorate/acetonitrile solution was carried out by direct current, differential pulse polarography, cyclic voltammetry, and controlled potential coulometry. The electrochemical reduction of ABMC was proceeded through three steps of electron transfer coupled with the chemical reactions. The color of solution was changed to yellow when the carbonyl group was reduced during 2nd step (-1.8 volts) and independented with cleavage of bromo group. Highest fluorescence intensity showed when the electrochemical reduction of AMC was controlled at near the potential (-2.3 volts vs. Ag/AgCl). English WILEY-V C H VERLAG GMBH LIGHT-EMITTING-DIODES LASER-DYES 7-HYDROXYCOUMARIN ELECTROLYTE EMISSION MEDIA Enhanced electrochemifluorescence and reduction mechanism of acetoxy coumarin derivatives in acetonitrile solution Article 1 BULLETIN OF THE KOREAN CHEMICAL SOCIETY, v.27, no.9, pp.1329 - 1334 BULLETIN OF THE KOREAN CHEMICAL SOCIETY 27 9 1329 1334 scie scopus kci ART001192766 000241448300012 2-s2.0-33749014122 Chemistry, Multidisciplinary Chemistry Article LIGHT-EMITTING-DIODES LASER-DYES 7-HYDROXYCOUMARIN ELECTROLYTE EMISSION MEDIA coumarin derivatives differential pulse polarography cyclic voltammetry fluorescence electrochemifluorescence