Let there be more light: Triarylamine‐based building blocks respond to visible‐light exposure by the formation of cationic radicals that hierarchically self‐assemble into molecular wires, which in turn combine within larger fibers (see picture). The stimuli‐responsive supramolecular scaffold, which is created by charge transfer and reversibly broken up by heating, prevents the quenching of holes within
X‐ray diffraction (VT‐XRD), and atomic force microscopy (AFM). Differences in the number and the disposition of the peripheral tails significantly affect their mesomorphicpropertiesassociated with their lamellar‐ or columnar‐packed nanostructures, which are based on segregated stacks of the triphenylamine cores and the lipophilic/lipophobic periphery. Such structural tuning is of interest for implementation
我们已经合成了一系列以三芳基胺为核心的分子,它们以各种方式配备有相邻的酰胺部分和树突状外围尾巴。用1表示1 H NMR和UV / Vis光谱表明,它们的超分子自组装可在光刺激和自由基引发下在溶液中促进。此外,我们通过使用差示扫描量热法(DSC),可变温度偏振光学显微镜(VT-POM),可变温度X射线衍射对薄膜状态进行综合研究,探索了它们的分子排列和介晶性质。 (VT‐XRD)和原子力显微镜(AFM)。外围尾部的数量和位置的差异会显着影响其与层状或柱状堆积的纳米结构相关的介晶性能,这些结构是基于三苯胺核心和亲脂性/疏脂性外围的分离堆叠。
作者:Thomas K. Ellis、Melodie Galerne、Joseph J. Armao、Artem Osypenko、David Martel、Mounir Maaloum、Gad Fuks、Odile Gavat、Emilie Moulin、Nicolas Giuseppone
DOI:10.1002/anie.201809756
日期:2018.11.26
concentration. Reported here is that supramolecularnucleation‐growth of triarylamine monomers can be triggered by electrochemistry in various solvents. The involved mechanism offers new opportunities to precisely address in space and time the nucleation of supramolecularpolymers at an electrode. To illustrate the potential of this methodology, supramolecular nanowires are grown an oriented over several