Self-Assembly of Luminescent Twisted Fibers Based on Achiral Quinacridone Derivatives  

作　　者：Yunfeng Zhao Yan Fan Xiaoyue Mu Hongze Gao Jia Wang Jingying Zhang Wensheng Yang Lifeng Chi Yue Wang 

机构地区：[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),Universität Münster,Münster 48149,Germany

出　　处：《Nano Research》2009年第6期493-499,共7页纳米研究（英文版）

基　　金：by the National Natural Science Foundation of China(50733002 and 50773027);the Major State Basic Research Development Program(2009CB939700)and 111 Project(B06009).

摘　　要：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-defi ned 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.

关 键 词：Twisted fi ber QUINACRIDONE SELF-ASSEMBLY luminescence 

分 类 号：O62[理学—有机化学]