Synthesis and Photophysical Properties of 2,3,5,6,7,8-Hexasilabicyclo[2.2.2]octan-1-yl-substituted Arenes
作者:Tamejiro Hiyama、Masaki Shimizu、Tomoaki Kawaguchi、Hisashi Nakagawa、Katsunari Oda
DOI:10.3987/com-09-s(s)118
日期:——
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 sigma-pi conjugation between the polysilacage moiety and the chromophores is operative. Theoretical study of the polysilacage-substituted chromophores is also presented.