College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, China.
Macromol Rapid Commun. 2012 Jun 27;33(12):1074-9. doi: 10.1002/marc.201200085. Epub 2012 Mar 19.
A 3-silolene derivative, 2,2,5,5-tetrakis(dimethylsilyl)-1,1-dimethyl-3,4-diphenyl-3-silolene (TDMSHS), is first synthesized and characterized by X-ray diffraction crystallography and spectroscopic methods. Hydrosilylation polymerization of TDMSHS with 1,1-dimethyl-2,5-bis(4-ethynylphenyl)-3,4-diphenylsilole in the presence of Karstedt's catalyst generates a stereoregular silole-containing hyperbranched poly(silylenevinylene) (hb-SPSV) with a high molecular weight (M(w) = 146,000, M(w)/M(n) = 1.5) in high yield (≈95%). hb-SPSV exhibits excellent thermal stability and strong fluorescence, and the emission of its aggregates in aqueous mixture can be quenched efficiently by picric acid with large quenching constants K(SV) up to 414400 M(-1).
一种 3-硅烯衍生物，2,2,5,5-四（二甲基硅基）-1,1-二甲基-3,4-二苯基-3-硅烯（TDMSHS），首先通过 X 射线衍射晶体学和光谱方法进行合成和表征。在 Karstedt 催化剂的存在下，TDMSHS 与 1,1-二甲基-2,5-双（4-乙炔基苯基）-3,4-二苯基硅烷进行氢硅烷化聚合，生成具有高分子量（M(w) = 146,000，M(w)/M(n) = 1.5）和高收率（≈95%）的立体规整硅烷封端的超支化聚（硅亚乙烯）（hb-SPSV）。hb-SPSV 表现出优异的热稳定性和强荧光性，其在水混合物中的聚集物的发射可以被苦味酸有效地猝灭，猝灭常数 K(SV)高达 414400 M(-1)。
