Key Laboratory for Organism Resources of the Changbai Mountain and Functional Molecules, Ministry of Education, and Department of Chemistry, College of Science, Yanbian University, Yanji, Jilin 133002, China.
Nanoscale. 2017 Nov 23;9(45):17975-17982. doi: 10.1039/c7nr05329k.
Rigid-flexible amphiphilic molecules consisting of an aromatic segment based on pyrene and biphenyl units and hydrophilic polyethylene oxide chains self-assemble into lamellar, hexagonal columnar, and two-dimensional columnar nanostructures in the bulk state. In aqueous solution, these molecules self-assemble into nanofibers, spherical micelles, and multilayer nanotubes, depending on the chain or rod length of the molecules. Notably, ordered nanostructures of supramolecular polymers, such as single-layer curving fragments, nanofibers, and nanosheets, were constructed through charge-transfer interactions between the nanoobjects and an electron-acceptor molecule, 2,4,5,7-tetranitrofluorenone. These experimental results reveal that diverse supramolecular morphologies can be controlled by tuning rod-coil molecular interactions or charge-transfer interactions between the donor and acceptor molecules.
刚性-柔性两亲性分子由基于芘和联苯单元的芳香片段和亲水的聚氧化乙烯链组成，在本体状态下自组装成层状、六方柱状和二维柱状纳米结构。在水溶液中，这些分子根据分子的链长或棒长自组装成纳米纤维、球形胶束和多层纳米管。值得注意的是，通过纳米物体和电子受体分子 2,4,5,7-四硝基芴酮之间的电荷转移相互作用，构建了超分子聚合物的有序纳米结构，如单层弯曲片段、纳米纤维和纳米片。这些实验结果表明，可以通过调节棒-线分子相互作用或供体和受体分子之间的电荷转移相互作用来控制多种超分子形态。
