研究室工作进展January 31, 2009
Star-shaped Silacyclobutene-Containing π-Systems:
Synthesis and Optical Properties
Junhui Liu, Shaoguang Zhang, Wen-Xiong Zhang, and Zhenfeng Xi*.
Organometallics 2009, 28, 413-417
Well-defined π-conjugated systems containing two or three silacyclobutene units have been synthesized in high yields via regioselective coupling of bis(phenylethynyl)silanes with dialkynylbenzene or trialkynylbenzene in the presence of Cp2ZrBu2. The UV-vis absorption and fluorescence spectra of these new π-conjugated systems have demonstrated that the increase in silacyclobutene units per molecule from two or three brings about an increase of the extinction coefficient.
从单炔基苯、二炔基苯或三炔基苯以及二炔基硅烷出发，以较高产率合成了以苯为核、结构中含有一个、两个和三个硅杂环丁烯骨架的共轭有机硅分子。随着分子中硅杂环丁烯骨架的增加，这类化合物的紫外吸收与荧光效率均有显著的提高。