| 초록 |
To control the intramolecular rotation of peripheral tetraphenyl rings in silole moiety, two tolyl substituted siloles, 1,1-diphenyl-2,3,4,5-tetra(m-tolyl)-1H-silole (m-TS) and 1,1-diphenyl-2,3,4,5-tetra(o-tolyl)-1H-silole (o-TS) were prepared. As substituting methyl groups at the ortho and meta positions in peripheral tetraphenyl rings on silacyclopentadiene ring, intramolecular rotations were successfully controlled and their photophysical properties were varied. Namely, this simple structural modification significantly affects their photophysical properties compare to their reference compound, hexaphenylsilole (HPS). Both tolyl compounds, m-TS and o-TS showed traditional aggregation-induced emission (AIE) property but their emissions were significantly blue-shifted due to the shorten length of π-conjugation. Finally, we examined them as a chemosensor for detection of nitro explosives. |
