HCl guided morphology and conductivity of chiral PPy nanostructures toward efficient electromagnetic wave absorption
| العنوان: | HCl guided morphology and conductivity of chiral PPy nanostructures toward efficient electromagnetic wave absorption |
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| المؤلفون: | QiBin Yao, Wenhua Wu, DaBo Chen, Lishan Wu, Xiaofen Yang, Xinxin Wang, Baoxin Fan, Guoxiu Tong |
| المصدر: | Science China Technological Sciences. 65:837-848 |
| بيانات النشر: | Springer Science and Business Media LLC, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Materials science, Scattering, business.industry, Attenuation, General Engineering, Conductivity, Planar, Absorption band, Helix, Optoelectronics, General Materials Science, business, Absorption (electromagnetic radiation), Microwave |
| الوصف: | To solve the severe electromagnetic (EM) radiation from the widespread application of electronic equipment, we developed a simple template-guided oxypolymerization strategy to synthesize polypyrrole (PPy) planar helixes as an efficient EM wave (EMW) absorber, and systematically investigated the morphology-dependent chirality, conductivity, and microwave absorption properties. As HCl concentration [HCl] varied from 0 to 2.0 M, the morphology evolved from planar helix to 3D cross-linking network structures, the conductivity increased from 0.0019 to 0.0302 S/cm, and the EM parameters peaked at [HCl]=0.5 M. Compared to other absorbers, the PPy planar helix formed at [HCl]=0 M possessed wider absorption band (5.84 GHz), smaller matching thickness (1.6 mm), lower loading (25 wt.%), and intenser absorption (−48.17 dB). The reason lies in the strong attenuation capability, multiple resonances, multiple scattering, and good impedance matching generated by chiral PPy planar helixes with a distinctive helical configuration, doped heteroatoms (O,S), and a local conductive network. Our results suggest that PPy planar helixes offer great promise for fields such as chiral sensors, electronics, optics, chiral catalysis, and EMW absorption and shielding due to their distinctive morphology, tunable conductivity, and outstanding EMW absorption properties (EMWAPs). |
| تدمد: | 1869-1900 1674-7321 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::27ffdd7b77753523931dc9b94b49b33c https://doi.org/10.1007/s11431-021-1892-y |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........27ffdd7b77753523931dc9b94b49b33c |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Springer Verlag. | تدمد: | 18691900 16747321 |
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