Control of the meso-architecture using self-assembly of the organic semiconductor having dendritic substituents

为了控制自组装半导体材料的介观结构，人们合成了几种新型的树枝状大分子。例如，在末端具有糖部分的富勒树枝，DBN焦点树枝及其富勒烯加合物，以及在核心具有二苯二硒醚的树枝状大分子。有趣的是，在单壁碳纳米管(SWCNTs)表面自组装了富勒树枝，形成了SWCNT/Fullerodendron超分子纳米复合材料，该复合材料具有良好的光功能界面，通过光诱导电子转移过程产生电荷分离态。此外，在超分子纳米复合材料表面包覆了SiO_2，制备了可用于光催化裂解水的SWCNT/FullerDendron/SiO_2同轴纳米杂化材料。值得注意的是，在可见光照射下，氢气的量子产率达到了31%。

In order to control the meso-architecture of self-assembled semiconducting materials, several new dendrimers have been synthesized. For instance, a fullerodendron having sugar moieties at the terminals, DBN-focal dendrons and their fullerene adducts, and a dendrimer having diphenyl diselenide at the core. Interestingly, fullerodendrons are self-assembled on the surface of single-walled carbon nanotubes(SWCNTs) to form the SWCNT/fullerodendron supramolecular nanocomposite that have nicely ordered photofunctional interface generating charge separated state via photoinduced electron transfer process. Furthermore, the supramolecular nanocomposite was covered by SiO_2 to produce the SWCNT/fullerodendron/SiO_2 coaxial nanohybrid that can be used for the photocatalyst for water splitting. It is notable that the quantum yield of H2 generation reaches to 31% upon visible light irradiation.