Poly(dimethylsilylene)diacetylene-Guided ZIF-Based Heterostructures for Full Ku-Band Electromagnetic Wave Absorption

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

19 Scopus Citations
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Author(s)

  • Peng Miao
  • Kaiyang Cheng
  • Hongqiang Li
  • Junwei Gu
  • Kaijie Chen
  • Ding Wang
  • Terence X. Liu
  • Ben B. Xu
  • Jie Kong

Detail(s)

Original languageEnglish
Pages (from-to)17706-17713
Journal / PublicationACS Applied Materials and Interfaces
Volume11
Issue number19
Online published23 Apr 2019
Publication statusPublished - 15 May 2019
Externally publishedYes

Abstract

Zeolitic imidazolate frameworks (ZIFs), a group of metal-organic frameworks (MOFs), hold promise as building blocks in electromagnetic (EM) wave absorbing/shielding materials and devices. In this contribution, we proposed a facile strategy to synthesize three-dimensional ZIF-67-based hierarchical heterostructures through coordinated reaction of a preceramic component, poly(dimethylsilylene)diacetylene (PDSDA) with ZIF-67, followed by carbonizing the PDSDA-wrapped ZIF at high temperature. The introduction of PDSDA leads to controllable generation of a surface network containing branched carbon nanotubes and regional distributed graphitic carbons, in addition to the nanostructures with a well-defined size and porous surface made by cobalt nanoparticles. The surface structures can be tailored through variations in pyrolysis temperatures, therefore enabling a simple and robust route to facilitate a suitable structural surface. The heterostructure of the ZIF nanocomplex allows the existence of dielectric loss and magnetic loss, therefore yielding a significant improvement on EM wave absorption with a minimum reflection coefficient (RCmin) of-50.9 dB at 17.0 GHz at a thickness of 1.9 mm and an effective absorption bandwidth (EAB) covering the full Ku-band (12.0-18.0 GHz).

Research Area(s)

  • coordination reaction, electromagnetic wave absorbing, heterostructure, nanocomplex, zeolitic imidazolate frameworks

Citation Format(s)

Poly(dimethylsilylene)diacetylene-Guided ZIF-Based Heterostructures for Full Ku-Band Electromagnetic Wave Absorption. / Miao, Peng; Cheng, Kaiyang; Li, Hongqiang; Gu, Junwei; Chen, Kaijie; Wang, Steven; Wang, Ding; Liu, Terence X.; Xu, Ben B.; Kong, Jie.

In: ACS Applied Materials and Interfaces, Vol. 11, No. 19, 15.05.2019, p. 17706-17713.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal