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| Type |
Poster Presentation |
| Area |
Inorganic Chemistry |
| Room No. |
Event Hall |
| Time |
4월 19일 (목요일) 11:00~12:30 |
| Code |
INOR.P-23 |
| Subject |
Photophysical Properties of closo- and nido-Carborane-Acceptor Compounds and Their Application to Fluoride Sensing |
| Authors |
NGHIA NGUYEN, SURENDRAN SUJITH, Heechai Lee, AJAY KUMAR, Min Hyung Lee*
Department of Chemistry, University of Ulsan, Korea
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| Abstract |
A family of neutral and anionic carboranyl derivatives of 1,3,4-oxadiazoles (closo-/nido-OXD) and sulfones (closo-/nido-DPS) were prepared and fully characterized. While the closo-compounds were poorly emissive in THF, the corresponding nido-compounds exhibited intense emission with high quantum yields (ΦPL = 0.30-0.45). The results suggested that the nonemissive nature of closo-compounds can be ascribed to the contribution of o-carborane to the LUMO in the S1 excited state and the intramolecular charge transfer (ICT) state from the nido-carborane to acceptor moieties is responsible for the efficient fluorescence in nido-compounds. The addition of fluoride to the THF solution of closo-OXD and -DPS led to strong emission, allowing turn-on fluorescence detection of fluoride anions. Furthermore, the nido-compounds in solid states exhibited highly efficient ICT emissions (ΦPL = 0.46-0.75), demonstrating that nido-carborane acted as an good donor due to its strong electron-donating properties. |
| E-mail |
gianghia.89@gmail.com |
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121st General Meeting of the KCS