Flexible Free-Standing Luminescent Two-Component Fiber Films with Tunable Hierarchical Structures Based on Hydrogen-Bonding Architecture

详细信息    查看全文

• 作者：Dongpeng Yan ; Gareth R. Williams ; Min Zhao ; Changming Li ; Guoling Fan ; Hejia Yang
• 刊名：Langmuir
• 出版年：2013
• 出版时间：December 17, 2013
• 年：2013
• 卷：29
• 期：50
• 页码：15673-15681
• 全文大小：519K
• 年卷期：v.29,no.50(December 17, 2013)
• ISSN：1520-5827

文摘

Although the fabrication of hierarchical architectures with highly ordered functional units is of great importance for both fundamental science and practical application, the development of one-dimensional (1D) organic hierarchical micro/nanostructures based on low-molecular-weight (LMW) building blocks remains at an early stage. Herein, we report two types of micro/nanoscaled multicomponent fluorescent fiber systems with tunable hierarchical morphologies through a one-step coassembly process. With the aid of hydrogen-bonding motifs, LMW precursors (1,4-bis(5-phenyloxazol-2-yl)benzene (A) and two coassembled building blocks: 4-bromotetrafluorobenzene carboxylic acid (B) and 2,3,4,5,6-pentafluorophenol (C)) have been self-organized into fibers and flexible free-standing films, which show hierarchical micro/nanostructures as well as tunable one-/two-photon luminescence. The disassembly of the multicomponent A.B and A.C fibers occurs at high temperature, which further alters the luminescence properties of the multicomponent materials. Therefore, this work provides a facile wet chemical route for fabricating multicomponent LMW self-assembled fibers and free-standing film systems with tunable hierarchical structures and photoemission behaviors, and such self-organized systems may have potential applications in fields of two-photon luminescence and thermal sensors.