Nanosized, Starlike Silicon Compounds. Synthesis and Optical Properties of Tris(tert-butyldimethylsilyl)oligo-thienylenedimetjhylsilylmethylsilanes

Mitsuo Ishikawa; Hitoshi Teramura; Kyung Koo LeeWolfgang SchneiderAkinobu NakaHisayoshi KobayashiYasuhiro YamaguchiMaki KikugawaJoji OhshitaAtsutaka KunaiHeqing TangYutaka HarimaTokio YamabeTakae Takeuchi

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Nanosized, Starlike Silicon Compounds. Synthesis and Optical Properties of Tris(tert-butyldimethylsilyl)oligo-thienylenedimetjhylsilylmethylsilanes

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Starlike molecules with arms consisting of a tert-butyldimethylsilyloligothienylene-dimethylsilyl unit, MeSiSiMe_2(T)_nSiMe_2(t-Bu)_3 (7-11; n = 2-6, T = thienylene) were prepared by the reactions of tris(chlorodimethylsilyl)methylsilane, which was chosen as a core, with the tert-butyldimethylsilyl-substituted loithiooligothienylenes used for construction of the arms. UV-visible absorption and fluorescence properties of 7-11 have been studied in a dioxane solution. The molecules 7-11 showed high fluorescence quantum yields with respect to the corresponding oligothiophenes. Compounds 7 and 8 revealed longer lifetimes than those bi-and terthiophene. The results of X-ray crystallographic analysis of the bromo derivative 12 are described. The density functional theoretical calculations were also cararied out to compare the geometrical structures and the excitation energies with the available experimental data.

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《Organometallics》 |2001年第25期|5331-5341|共11页
作者
Mitsuo Ishikawa; Hitoshi Teramura; Kyung Koo LeeWolfgang SchneiderAkinobu NakaHisayoshi KobayashiYasuhiro YamaguchiMaki KikugawaJoji OhshitaAtsutaka KunaiHeqing TangYutaka HarimaTokio YamabeTakae Takeuchi;
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Department of Chemical Technology, Kurashiki University of Science and the Arts, 2640 Nishinoura, Tsurajima-cho, Kurashiki, Okayama 712-8505, Japan, Division of Materials Chemistry and Chemical Engineering, Graduate School of Engineering, Hiroshima U;

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中图分类有机化学;有机质材料;
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Nanosized, Starlike Silicon Compounds. Synthesis and Optical Properties of Tris(tert-butyldimethylsilyl)oligo-thienylenedimetjhylsilylmethylsilanes

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