ORGN 426 |
| Byeong-Kwan An, School of Materials Science & Engineering, Seoul National University, San 56-1, Shillim-dong, Kwanak-gu, Seoul, 151-744, South Korea, Soon-Ki Kwon, Department of Polymer Science & Engineering and RIT, Gyeongsang National University, Chinju, 660-701, South Korea, and Soo Young Park, School of Materials Science and Engineering, Seoul National University, San 56-1, Shinlim-Dong, Kwanak-Ku, Seoul, 151-744, South Korea. |
| The detection technology of volatile organic compounds (VOC) has been developed continuously over the last two decades due to its significance of ensuring environmental safety. Recently, vapochromism and vapoluminescence have attracted much attention due to the their drastic color and fluorescence changes after VOC exposure. In this work, we report a novel organic vapoluminescent material that displays an excellent sensing ability to detect various VOCs. The sensing material consists of a conjugated cyano-stilbene compound and shows remarkable fluorescent color changes from yellowish orange to green when VOCs are exposed. The original yellowish orange emission is recovered when VOCs are evaporated. This reversible emission color change is attributed to the changes of the conformation and intermolecular interaction of the sensing molecules when VOCs penetrate into the free volume of the sensing molecules. The practical tests are also demonstrated for various applications of VOC sensors such as hazardous organic vapor detections and vapor leak detection of tubes or vessels. |
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Physical Organic, Materials, Heterocycles, Aromatics, Metal-Mediated Reactions
8:00 PM-10:00 PM, Tuesday, September 9, 2003 Hilton New York -- Americas Hall 1, Poster
Division of Organic Chemistry |