A versatile approach to the synthesis of hybrid dendrimers composed of a rigid aromatic core and a flexible carbosilane shell is proposed. For this, carbosilane monodendrons of the first, second, and third generations were linked to a Muellen-type polyphenylene dendrimer via the copper-catalyzed azide–alkyne cycloaddition reaction. A series of hybrid dendrimers with a fixed phenylene core size and various carbosilane peripheries were synthesized to clarify the influence of a growing flexible shell on thermal and rheological dendrimer properties. Small-angle X-ray scattering experiments and density functional theory calculations revealed that the dendrimers form a columnar phase with hexagonal (G1, G2) and orthorhombic (G3) types of packing.

中文翻译：

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柔性壳的生长对杂化树枝状聚合物分子行为的影响

提出了一种由刚性芳族核和柔性碳硅烷壳组成的杂化树枝状大分子的合成方法。为此，第一代，第二代和第三代碳硅烷单树枝状分子通过铜催化的叠氮化物-炔烃环加成反应与Muellen型聚亚苯基树枝状大分子连接。合成了一系列具有固定亚苯基核尺寸和各种碳硅烷周边的杂化树枝状聚合物，以阐明不断增长的柔性壳对热和流变树枝状聚合物性质的影响。小角X射线散射实验和密度泛函理论计算表明，树枝状聚合物形成具有六方（G1，G2）和正交晶（G3）堆积类型的柱状相。