Bamboo-like π-Nanotube with Tunable Helicity and Circularly Polarized Luminescence.

Yuan Wang,Kaiwei Wan,Fei Pan,Xuefeng Zhu,Yuqian Jiang,Hui Wang,Yuli Chen,Xinghua Shi,Minghua Liu

Published 2021 in Angewandte Chemie

ABSTRACT

We report the fabrication of an exotic bamboo-like π-nanotube via the hierarchical self-assembly of a dipeptide-substituted naphthalenediimide gelator with tunable helicity and circularly polarized luminescence (CPL). It was found that in the presence of trifluoroacetic acid (TFA) the gelator molecule self-assembled into a bamboo-like nanotube, which is composed of truncated nanocones and CPL active. When defining the diameter ratio of the lower to upper edge of each nanocone as a parameter to express the helicity of different nanotubes, it was found that both the helicity and CPL of these nanotubes can be adjusted by the amount of TFA. Moreover, the helicity of the nanotube can be conveyed to the achiral quantum dots (QDs) and produce a hybrid nanotube/QDs CPL active materials with adjustable dissymmetry factor. This work finds a new type self-assembled bamboo-like nanotube and unveiled their helicity and CPL control.

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