Self-assembly of luminescent twisted fibers based on achiral quinacridone derivatives |
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Authors: | Yunfeng Zhao Yan Fan Xiaoyue Mu Hongze Gao Jia Wang Jingying Zhang Wensheng Yang Lifeng Chi Yue Wang |
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Affiliation: | 1. State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, China 2. Physikalisches Institut and Center for Nanotechnology (CeNTech), Universit?t Münster, Münster, 48149, Germany
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Abstract: | It is a great challenge to spontaneously assemble achiral molecules into twisted nanostructures in the absence of chiral substances.
Here we show that two achiral centrosymmetric quinacridone (QA) derivatives, N,N′-di(n-hexyl)-1, 3, 8, 10-tetramethylquinacridone (C6TMQA) and N,N′-di(n-decyl)-1, 3, 8, 10-tetramethylquinac ridone (C10TMQA), can be employed as building blocks to fabricate well-defined twisted
nanostructures by controlling the solvent composition and concentration. Bowknot-like bundles with twisted fiber arms were
prepared from C6TMQA, whilst uniform twisted fibers were generated from C10TMQA in ethanol/THF solution. Spectroscopic characterization
and molecular simulation calculations revealed that the introduction of ethanol into the solution could induce a staggered
aggregation of C6TMQA (or C10TMQA) molecules and the formation of twisted nanostructures. Such twisted materials generated
from achiral organic functional molecules may be valuable in the design and fabrication of new materials for optoelectronic
applications.
Electronic Supplementary Material Supplementary material is available for this article at and is accessible for authorized users. |
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Keywords: | Twisted fiber quinacridone self-assembly luminescence |
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