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Spectroscopic Properties of Quercetin-3-O-rhamnoside and Quercetin-3-O-rutinoside in Aerosol-OT Reverse Micelles
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  • Spectroscopic Properties of Quercetin-3-O-rhamnoside and Quercetin-3-O-rutinoside in Aerosol-OT Reverse Micelles
  • Spectroscopic Properties of Quercetin-3-O-rhamnoside and Quercetin-3-O-rutinoside in Aerosol-OT Reverse Micelles
저자명
Park. Hyoung-Ryun,Liu. Hai-Bo,Shin. Sung-Chul,Park. Jong-Keun,Bark. Ki-Min
간행물명
Bulletin of the Korean Chemical Society
권/호정보
2011년|32권 3호|pp.981-987 (7 pages)
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대한화학회
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정기간행물|ENG|
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

The anomalous spectroscopic properties of quercetin-3-O-rhamnoside (QCRM) and quercetin-3-O-rutinoside (QCRT) in AOT reverse micelle were studied. The excited state intramolecular proton transfer (ESIPT) occurs through the strong hydrogen bond between the -OH at position 5 and the carbonyl oxygen. Because the ESIPT can only happens in the $S_1$ state and the Franck-Condon factor involved in the $S_2;{ ightarrow};S_1$ internal conversion is small, the $S_2;{ ightarrow};S_o$ emission alone appears. Because the molecular planarity is improved at the interior of the micelle, the excited state intramolecular charge transfer in the $S_1$ state is extended, and the excited state is more tolerable for any quenching effects in the micelle. Therefore, an $S_1;{ ightarrow};S_o$ emission was newly discovered under this micelle microenvironment. For the $S_2;{ ightarrow};S_o$ emission, the quantum yields increase but the quantum yield of the $S_1;{ ightarrow};S_o$ emission approximately decreases as the water concentration in the micelle increases.