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Structural control of the photoluminescence of silole regioisomers and their utility as sensitive regiodiscriminating chemosensors and efficient electroluminescent materials

Authors Li, Zhen HKUST affiliated (currently or previously)
Dong, Yongqiang HKUST affiliated (currently or previously)
Mi, Baoxiu HKUST affiliated (currently or previously)
Tang, Youhong HKUST affiliated (currently or previously)
Haeussler, Matthias HKUST affiliated (currently or previously)
Tong, Hui HKUST affiliated (currently or previously)
Dong, Yuping HKUST affiliated (currently or previously)
Lam, Jacky Wing Yip View this author's profile
Ren, Yan HKUST affiliated (currently or previously)
Sung, Herman Ho Yung HKUST affiliated (currently or previously)
Wong, Kam Sing View this author's profile
Gao, Ping View this author's profile
Williams, Ian Duncan View this author's profile
Kwok, Hoi Sing View this author's profile
Tang, Ben Zhong View this author's profile
Issue Date 2005
Source JOURNAL OF PHYSICAL CHEMISTRY B , v. 109, (20), 2005, MAY 26, p. 10061-10066
Summary We synthesized a group of silole regioisomers whose photoluminescence varied dramatically with its regiostructure. By internally hindering the intramolecular rotation, we succeeded in creating a novel silole (1(3,4)) 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 1(2,4) blue-shifted its emission color and boosted its emission efficiency. The light-emitting diode based on the crystal Of 1(2,4) emitted a strong blue light (464 nm) in a high current efficiency (5.86 cd/A).
ISSN 1520-6106
Language English
Format Article
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