A Hexagonal Shape-Persistent Nanobelt of Elongated Rhombic Symmetry with Orthogonal π-Planes by a One-Pot Reaction [Data]

Triptycenes with their predefined D3h-symmetry are excellent molecular building blocks to construct shape-persistent nanobelts having π-orbitals orthogonal to the ring plane. However, up to now, there are only a very few examples of fused and rigid iptycene nanobelts synthesized in several consecutive steps in overall yields below 1%. Here we present the simple one-step one-potapproach to an iptycene nanobelt, which forms in >2% and can readily isolated from the polymeric by-product by gel-permeation chromatography.

具有预设D3h对称性的三蝶烯（Triptycene）是构建具有与环平面正交π轨道的形状持久性纳米带的优异分子构筑基元。然而截至目前，仅报道了极少例通过多步连续合成得到的稠合刚性异旋苯（iptycene）纳米带，其总产率低于1%。本工作报道了一种简便的一锅一步法合成异旋苯纳米带的策略，该产物产率可达2%以上，且可通过凝胶渗透色谱法轻松从聚合物副产物中分离得到。