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Interfacial Synthesis of Conjugated Crystalline 2D Fluorescent Polymer Film Containing Aggregation‐Induced Emission Unit
Author(s) -
Liu Hui,
Zhang Zhaohui,
Wu Chenyu,
Pan Qingyan,
Zhao Yingjie,
Li Zhibo
Publication year - 2019
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201804519
Subject(s) - x ray photoelectron spectroscopy , transmission electron microscopy , materials science , fluorescence , selected area diffraction , scanning electron microscope , conjugated system , polymer , foil method , nanotechnology , chemical engineering , crystallography , analytical chemistry (journal) , chemistry , optics , organic chemistry , composite material , physics , engineering
A fully conjugated 2D fluorescent film containing a tetraphenylethene (TPE) unit is constructed by Glaser–Hay coupling reaction on the surface of copper foil. A large‐area, freestanding fluorescent films with an average thickness 4.5 nm can be obtained through the strategy of solid–liquid interfacial synthesis. The film and the pore structure are characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM), atomic force microscopy (AFM), X‐ray photoelectron spectroscopy (XPS). High‐resulution TEM and selected area electron diffraction (SAED) further confirm the dual pores structure with triangular‐ and hexagonal‐shaped pores. The as‐prepared 2D films exhibit excellent solid‐state fluorescence emission arising from the confinement of TPE units.