title: Flexible free-standing luminescent two-component fiber films with tunable hierarchical structures based on hydrogen-bonding architecture.
abstract: 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.
authors.affiliation: State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology , Beijing 100029, P. R. China.
authors.forename: Dongpeng
authors.initials: D
authors.lastname: Yan
authors.forename: Gareth R
authors.initials: GR
authors.lastname: Williams
authors.forename: Min
authors.initials: M
authors.lastname: Zhao
authors.forename: Changming
authors.initials: C
authors.lastname: Li
authors.forename: Guoling
authors.initials: G
authors.lastname: Fan
authors.forename: Hejia
authors.initials: H
authors.lastname: Yang
mesh_terms: D005464:Fluorobenzenes / Q000737:chemistry; D006860:Hydrogen Bonding; D049329:Nanostructures / Q000737:chemistry*; D010636:Phenols / Q000737:chemistry; D013499:Surface Properties; D005466:Fluorocarbons
chemical_list: D005464:Fluorobenzenes; D010636:Phenols; C085539:2,3,4,5,6-pentafluorophenol; D005466:Fluorocarbons