Journal of Laboratory Chemical Education
p-ISSN: 2331-7450 e-ISSN: 2331-7469
2019; 7(3): 45-49
doi:10.5923/j.jlce.20190703.01
Yingxi Lu 1, Hongkun Yang 1, Wenhui Wu 2, Xu Zhang 1, Huijuan Yue 3, Yuhan Wei 2, Dan Xue 2, Ning Sui 1, Xianfeng Zhou 2, Fanglin Du 1
1College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, P.R. China
2College of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao, P.R. China
3State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, P.R. China
Correspondence to: Yingxi Lu , College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, P.R. China.
Email: |
Copyright © 2019 The Author(s). Published by Scientific & Academic Publishing.
This work is licensed under the Creative Commons Attribution International License (CC BY).
http://creativecommons.org/licenses/by/4.0/
Healable WO3-polymeric composite films were fabricated by a simple method of layer-by-layer (LbL) assembly technique. The assembled films can heal damages such as scratches and cuts for multiple times on the same location by simply exposure to an acidic solution (pH 2.5). The healability was examined by UV-vis spectrophotometer. The surface morphology and composition of the films were characterized by atomic force microscopy (AFM), fourier transform infrared (FT-IR) spectrophotometer and X-ray powder diffraction (XRD).
Keywords: Layer-by-layer assembly, Healing materials, Tungsten oxide, Electrochromics
Cite this paper: Yingxi Lu , Hongkun Yang , Wenhui Wu , Xu Zhang , Huijuan Yue , Yuhan Wei , Dan Xue , Ning Sui , Xianfeng Zhou , Fanglin Du , Healable Layer-by-Layer Assembled WO3-Polymeric Composite Films: Undergraduate Experiments for Nanomaterials, Journal of Laboratory Chemical Education, Vol. 7 No. 3, 2019, pp. 45-49. doi: 10.5923/j.jlce.20190703.01.
Figure 1. Schematic illustration for the preparation of (PAA/PTA & PEO)*n multilayer films by LbL assembly technique |
Figure 2. XRD patterns of the powdered PTA precursor and the mixture of PEO and PTA |
Figure 3. FT-IR spectra of the powdered PTA, PEO and the mixture of PTA and PEO (KBr pellet) |
Figure 4. (a) AFM image for the assembled (PAA/PTA&PEO)*60 multilayers on the silicon wafer. Scan size is 8×8 µm; (b) Cross-sectional SEM image of the (PAA/PTA&PEO)*60 film |