Organofluorosilicates in organic synthesis. 9. Stereochemistry at carbon in cleavage of the carbon-silicon bond in exo- and endo-2-norbornylpentafluorosilicates by various brominating agents
together with IV and an unidentified product. GLC-monitoring of the reactions showed the higher reactivity of the norbornenyl derivative having the leaving group in theendo position irrespective of whether the leaving group is SiF5 or H. Since no inhibition was observed by the addition of hydroquinone in the dark, the reactions have been regarded as homoallylic electrophilic substitutions. A concerted
Iridium-containing polymers based on functionalized norbornenes as new efficient electroluminophores
作者:L. N. Bochkarev、Yu. E. Begantsova、E. O. Platonova、G. V. Basova、A. V. Rozhkov、V. A. Il’ichev、E. V. Baranov、G. A. Abakumov、M. N. Bochkarev
DOI:10.1007/s11172-014-0540-8
日期:2014.4
The copolymer with carbazole and iridium-containing groups in the side chains (P1) and the terpolymer with additional organosilicon units (P2) were synthesized by the ring-opening metathesis polymerization (ROMP). The photoluminescence (PL) and electroluminescence (EL) properties of the synthesized polymeric materials were investigated. The iridium-containing terpolymer exhibited the most efficient EL characteristics: the maximum brightness is 1780 cd m−2 (21 V), the maximum current efficiency is 23.3 cd A−1 (13 V), and the maximum power efficiency is 6.4 lm W−1 (11 V). The color coordinates of the emission in the CIE (Commision Internationale de l’Eclairage) diagram (0.21, 0.71) correspond to the green color and remain virtually unchanged in the whole driving voltage range.
通过开环易位聚合(ROMP)合成了侧链上含有咔唑和含铱基团的共聚物(P1)和带有附加有机硅单元的三元共聚物(P2)。研究了合成聚合物材料的光致发光(PL)和电致发光(EL)性能。含铱三元共聚物表现出最高效的EL特性:最大亮度为1780 cd m−2 (21 V),最大电流效率为23.3 cd A−1 (13 V),最大功率效率为6.4 lm W −1(11V)。 CIE(国际照明委员会)图中的发射色坐标(0.21,0.71)对应于绿色,并且在整个驱动电压范围内几乎保持不变。
Silaheterocyclen
作者:N. Auner
DOI:10.1016/0022-328x(88)80318-8
日期:1988.10
Highly permeable polymer materials based on silicon-substituted norbornenes
作者:M. L. Gringol’ts、M. V. Bermeshev、A. V. Syromolotov、L. E. Starannikova、M. F. Filatova、K. L. Makovetskii、E. Sh. Finkel’shtein
DOI:10.1134/s0965544110050063
日期:2010.9
An approach to the manufacture of highly permeable polymers based on the synthesis and polymerization of norbornenes, norbornadienes, and tricyclononenes with different numbers and different positions of silicon-containing substituents has been developed. It has been found that these monomers are readily involved in metathesis polymerization yielding high-molecular-mass polymers possessing good filmforming properties. The addition (vinyl) polymerization of norbornenes is a more complex process; however, the product silylated polynorbornenes exhibit a higher gas permeability than the corresponding metathesis polynorbornenes. By the level of the gas-transport parameters, the silylated addition polynorbornenes obtained in the study are grouped with the most advanced high-permeability polymers. It has been shown that the presence of Me3Si substituent groups, their amount, and the main-chain structure are responsible for the enhancement of the gas permeability of polynorbornenes. Thus, a series of polymers with a regularly changing structure has been obtained, a result that makes it possible to reveal the polymer structure-property relations.
Reactions of Vinyltrichlorosilane and Vinyltriethoxysilane
作者:G. H. Wagner、D. L. Bailey、A. N. Pines、M. L. Dunham、D. B. Mclntire