Research Article

Nano Research

, Volume 2, Issue 6, pp 493-499

Open Access This content is freely available online to anyone, anywhere at any time.

Self-assembly of luminescent twisted fibers based on achiral quinacridone derivatives

  • Yunfeng ZhaoAffiliated withState Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University
  • , Yan FanAffiliated withState Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University
  • , Xiaoyue MuAffiliated withState Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University
  • , Hongze GaoAffiliated withState Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University
  • , Jia WangAffiliated withState Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University
  • , Jingying ZhangAffiliated withState Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University
  • , Wensheng YangAffiliated withState Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University
  • , Lifeng ChiAffiliated withPhysikalisches Institut and Center for Nanotechnology (CeNTech), Universität Münster
  • , Yue WangAffiliated withState Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University Email author 

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.

http://static-content.springer.com/image/art%3A10.1007%2Fs12274-009-9045-4/MediaObjects/12274_2009_9045_Fig1_HTML.jpg

Keywords

Twisted fiber quinacridone self-assembly luminescence