New chiral binaphthyl-based polyarylenes [(S)-3a and (S)-3b] with appendant Frechet-type poly(aryl ether,) dendrons (first generation and second generation) were synthesized with Suzuki polycondensation from chiral (S)-6,6'-dibromo-2,2'-didendron-substituted 1,1'-binaphthyl derivatives and p-phenylene diboronic acid. The polymers were studied with circular dichroism, fluorescence, and ultraviolet-visible spectra. Laser light scattering measurements of (S)-3a and (S)-3b showed that their weight-average molecular weights were 2.39 X 10(5) and 1.09 X 10(4), respectively. The specific optical rotation [alpha](D) was -59.6 for (S)-3a and -62.7 for (S)-3b. These dendronized conjugated polymers exhibited good thermal stability. The glass-transition temperatures and the initial decomposition temperatures were 187.5 and 265.3 degreesC for (S)-3a and 173.8 and 308.9 degreesC for (S)-3b, respectively. (S)-3a and (S)-3b had high fluorescence quantum efficiencies, 87 and 91%, respectively, in tetrahydrofuran. (C) 2002 Wiley Periodicals, Inc. [References: 27]
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机译：通过手性（S）-6的Suzuki缩聚反应合成了具有手性Frechet型聚（芳基醚）树状分子的新手性二萘基聚亚芳基[（S）-3a和（S）-3b] ，6′-二溴-2，2′-二苯甲酮取代的1，1′-联萘基衍生物和对亚苯基二硼酸。用圆二色性，荧光和紫外可见光谱研究了该聚合物。 （S）-3a和（S）-3b的激光散射测量表明，它们的重均分子量分别为2.39 X 10（5）和1.09 X 10（4）。 （S）-3a的比旋光度α（D）为-59.6，（S）-3b为-62.7。这些树枝状的共轭聚合物表现出良好的热稳定性。 （S）-3a的玻璃化转变温度和初始分解温度分别为187.5和265.3℃，（S）-3b的为173.8和308.9℃。 （S）-3a和（S）-3b在四氢呋喃中的荧光量子效率分别为87％和91％。 （C）2002 Wiley Periodicals，Inc. [参考：27]
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