Synthese und Reaktionsverhalten von Stannyloligosilanen, I. Kettenförmige Stannyloligosilane mit SiMe2-Einheiten/Synthesis and Reactivity of Stannyloligosilanes, I. Stannyloligosilane Chains Containing SiMe2 Moieties
Time-resolved fluorescence of α,ω-di(1-naphthyl)oligosilanes and 1-naphthyloligosilanes: intramolecular excimer formation and charge-transfer interactions
Abstract The intramolecular photochemical processes excimer formation and charge-transfer (CT) complex formation were investigated by comparing the behavior of α,ω-di(1-naphthyl)permethyloligosilanes ((1-naphthyl)-(SiMe2) n -(1-naphthyl); NS n N , n = 1, 3, and 6) and 1-(1-naphthyl)permethyloligosilanes ((1-naphthyl)-(SiMe2) n -Me; NS n , n = 1, 3, and 6) by use of stationary and time-resolved fluorescence
摘要 通过比较α,ω-二(1-萘基)过甲基低聚硅烷((1-萘基)-(SiMe 2) n- (1- )的行为,研究了分子内光化学过程受激准分子的形成和电荷转移(CT)络合物的形成。萘基); NS n N , n = 1、3和6)和1-(1-萘基)过甲基低聚硅烷((1-萘基)-(SiMe 2) n -Me; NS n , n = 1,3和6 6)通过使用固定和时间分辨荧光(TR-FL)测量。准分子和CT复合物的形成高度依赖于硅链的长度和介质的极性。 图形摘要 分子内受激准分子的萘基和硅烷部分之间在两个萘基和电荷转移的相互作用之间形成了通过使用时间相关单光子计数方法的研究。
Increased carrier mobility in end-functionalized oligosilanes
作者:S. Surampudi、M.-L. Yeh、M. A. Siegler、J. F. Martinez Hardigree、T. A. Kasl、H. E. Katz、R. S. Klausen
DOI:10.1039/c4sc03274h
日期:——
A class of hybrid oligosilane–arene materials outperforms the σ- and π-conjugated parent structures.
一类混合寡硅烷-芳烃材料的性能优于σ-和π-共轭的母体结构。
Reactions of dodecamethylcyclohexasilane and polydimethylsilane with metal chlorides
The reactions of dodecamethylcyclohexasilane and high-molecular-weight polydimethylsilane with chlorides of I, II, IV–VI and VIII Group metals at high temperature in the absence of a solvent were studied. The interaction of (Me2Si)6 with metal chlorides proceeds with the cleavage of SiSi and SiC bonds with the formation of chloro derivatives of linear and cyclic permethyloligosilanes. The reactions
Photoinduced electron-transfer (PET) reactions were investigated for the cyclic oligosilanes and high molecular weight polysilanes in the presence of 9-cyanoanthracene (CA), 9,10-dicyanoanthracene (DCA), and triphenylpyrylium tetrafluoroborate (TPP+BF) using chemical and spectroscopic methods in solution. For the cyclic oligosilanes, the pyranyl radical (TPP·) and silane radical cation were observed
Oligosilanes with phenyl end groups, Ph(SiMe2)nPh where n = 10, 11, 12 and 13, were synthesized and their thermal and structural properties were studied. Dodecamer and tridecamer possessed mesophases showing the interdigitated structure in the range of 126–139 and 127–155 °C, respectively. In the mesophase, the silicon chains adopted the all-trans conformation.
合成了具有苯基端基的低聚硅烷 Ph(SiMe2)nPh,其中 n = 10、11、12 和 13,并研究了它们的热和结构特性。Dodecamer 和 tridecamer 具有中间相,分别在 126-139 和 127-155 °C 的范围内显示交叉结构。在中间相,硅链采用全反式构象。