キノウセイ ユウキ ケイソ カゴウブツ ノ ゴウセイ ケンキュウ

京都大学0048新制・課程博士博士(工学)甲第13067号工博第2809号新制||工||1408(附属図書館)UT51-2007-H340京都大学大学院工学研究科材料化学専攻(主査)教授 檜山 爲次郎, 教授 大嶌 幸一郎, 教授 松原 誠二郎学位規則第4条第1項該当Doctor of EngineeringKyoto UniversityDA

Synthesis and Photophysical Properties of 2,3,5,6,7,8-Hexasilabicyclo[2.2.2]octan-1-yl-substituted Arenes

Incorporation of 2, 2, 3, 3, 5, 5, 6, 6, 7, 7, 8, 8-dodecamethyl-2, 3, 5, 6, 7, 8-hexasilabicyclo[2.2.2]octan-1-yl moiety into such chromophores as biphenyl, terphenyl, stilbene, and tolan was found to induce bathochromic shifts of absorption and fluorescence spectra, compared with those of the parent chromophores. Moreover, enhancement of the molar extinction coefficients and the fluorescence quantum yields by the substitution was also observed. These results indicate that σ–π conjugation between the polysilacage moiety and the chromophores is operative. Theoretical study of the polysilacage-substituted chromophores is also presented