Sang Yunsen, Guo Yongmin, Wang Hairui, Li Yi, Li Baozong, Yang Yonggang
J Nanosci Nanotechnol. 2015 Mar;15(3):2451-5. doi: 10.1166/jnn.2015.9492.
Four dipeptides with alkyl chains derived from L- and D-valines were synthesized, the handedness of their self-assemblies were controlled by the valine chirality at the terminals. The stacking of the carbonyl groups plays an important in the formation of chiral organic self-assemblies. Chiral 4,4'-biphenylene bridged polybissilsesquioxane nanotubes were prepared using the self-assemblies of these dipeptides as the templates. The chirality of the polysilsesquioxane nanotubes was mainly controlled by the valines at the terminals of the dipeptides, which was transferred from the valines at the terminals through electrostatic interaction. The valines near the alkyl chains could also affect the polysilsesquioxane chirality through hydrogen bonding.
合成了四种由L-和D-缬氨酸衍生的带有烷基链的二肽，其自组装的手性由末端缬氨酸的手性控制。羰基的堆积在手性有机自组装的形成中起重要作用。以这些二肽的自组装为模板制备了手性4,4'-联亚苯基桥连聚倍半硅氧烷纳米管。聚倍半硅氧烷纳米管的手性主要由二肽末端的缬氨酸控制，其通过静电相互作用从末端缬氨酸转移而来。烷基链附近的缬氨酸也可通过氢键影响聚倍半硅氧烷的手性。
