1. Department of Molecular Science
and Technology, Ajou University, Suwon
443-749, Korea
2. Rainbow Photonics AG, CH-8048 Zurich, Switzerland
3. Division of Energy Systems Research
and Department of Chemistry, Ajou University, Suwon 443-749, Korea
4. Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Korea
5. Department of Basic Science, Korea Air Force Academy, Cheongju 363-849, Korea