Abstract
We synthesized a group of silole regioisomers 1x,y, whose photoluminescence varied dramatically with its regiostructure. By internally hindering the intramolecular rotation, we succeeded in creating a novel silole (13,4) that is strongly luminescent in solutions and whose fluorescence quantum yield in acetone is as high as 83%. We revealed that 1 3,4 was a sensitive chemosensor capable of optically discriminating nitroaromatic regioisomers of p-, o-, and m-nitroanilines. Against general belief, crystal formation of 12,4 blue-shifted its emission color and boosted its emission efficiency. The light-emitting diode based on the crystal of 12,4 emitted a strong blue light (464 nm) in a high current efficiency (5.86 cd/A).
Original language | English |
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Pages (from-to) | 10061-10066 |
Number of pages | 6 |
Journal | Journal of Physical Chemistry B |
Volume | 109 |
Issue number | 20 |
DOIs | |
Publication status | Published - 26 May 2005 |
Externally published | Yes |