Bamboo-like π-Nanotubes 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

doi:10.1002/anie.202104843

Bamboo-like π-Nanotubes with Tunable Helicity and Circularly Polarized Luminescence

Angew Chem Int Ed Engl. 2021 Jul 19;60(30):16615-16621. doi: 10.1002/anie.202104843. Epub 2021 Jun 21.

Authors

Yuan Wang^{1

2}, Kaiwei Wan^{2

3}, Fei Pan^{3

4}, Xuefeng Zhu¹, Yuqian Jiang⁵, Hui Wang³, Yuli Chen⁴, Xinghua Shi^{2

3}, Minghua Liu^{1

2}

Affiliations

¹ Beijing National Laboratory for Molecular Science, CAS Key Laboratory of Colloid Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.
² University of Chinese Academy of Sciences, Beijing, 100049, China.
³ Laboratory of Theoretical and Computational Nanoscience, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing, 100190, P. R. China.
⁴ Institute of Solid Mechanics, Beihang University, Beijing, 100191, China.
⁵ Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing, 100190, P. R. China.

PMID: 33960094
DOI: 10.1002/anie.202104843

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 molecules self-assembled into a bamboo-like π-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 π-nanotube and unveils their helicity and CPL control.

Keywords: circularly polarized luminescence; helicity; hierarchical assembly; nanotube; quantum dots.

Abstract

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