近日，法国斯特拉斯堡大学Nicolas Giuseppone与Jean-Marie Lehn团队通过对基于三芳胺的大环进行超分子聚合，成功构建了一种电活性纳米管。这一研究成果于2021年4月9日发表在国际顶尖学术期刊《美国化学会志》上。

在该研究中，团队通过汇聚与模块化合成策略，成功合成了一种侧面有六个酰胺官能团的S₆对称性的三芳胺基大环分子（例如六氮杂[16]对环番）。研究人员对该大环在邻二氯苯中进行超分子聚合，并通过光谱学和显微镜技术结合X射线散射和分子建模阐明了获得的纳米管结构。

进一步研究发现，在连续氧化后，该超分子聚合物的光谱电化学分析表明，在大环内（通过键）和沿着堆积方向的大环间（通过空间），载流子的电子离域程度发生了扩展。

附：英文原文

Title: Supramolecular Polymerization of Triarylamine-Based Macrocycles into Electroactive Nanotubes

Author: Flavio Picini, Susanne Schneider, Odile Gavat, Andreas Vargas Jentzsch, Junjun Tan, Mounir Maaloum, Jean-Marc Strub, Shoichi Tokunaga, Jean-Marie Lehn, Emilie Moulin, Nicolas Giuseppone

Issue&Volume: April 9, 2021

Abstract: A S6-symmetric triarylamine-based macrocycle (i.e., hexaaza[16]paracyclophane), decorated with six lateral amide functions, is synthesized by a convergent and modular strategy. This macrocycle is shown to undergo supramolecular polymerization in o-dichlorobenzene, and its nanotubular structure is elucidated by a combination of spectroscopy and microscopy techniques, together with X-ray scattering and molecular modeling. Upon sequential oxidation, a spectroelectrochemical analysis of the supramolecular polymer suggests an extended electronic delocalization of charge carriers both within the macrocycles (through bond) and between the macrocycles along the stacking direction (through space).

DOI: 10.1021/jacs.1c00623

Source: https://pubs.acs.org/doi/10.1021/jacs.1c00623