Hyo Sung Junga, Ji Hye Hanb, Tuhin Pradhana, Sooyeon Kima, Seok Won Leeb, Jonathan L. Sesslerc, Tae Woo Kimb, Chulhun Kangb,*, Jong Seung Kima,*
aDepartment of Chemistry, Korea University, Seoul 136-701, Republic of Korea
bThe School of East-West Medical Science, Kyung Hee University, Yongin 446-701, Republic of Korea
cDepartment of Chemistry and Biochemistry, The University of Texas at Austin, Austin, TX 78712-0165, USA
* Corresponding authors : Chulhun Kang, Jong Seung Kim