Controllable Surface-Grafted MXene Inks for Electromagnetic Wave Modulation and Infrared Anti-Counterfeiting Applications

Zhiming Deng, Lulu Li, Pingping Tang, Chenyang Jiao, Zhong Zhen Yu, Chong Min Koo, Hao Bin Zhang

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Two-dimensional transition metal carbide/nitride (MXene) conductive inks are promising for scalable production of printable electronics, electromagnetic devices, and multifunctional coatings. However, the susceptible oxidation and poor rheological property seriously impede the printability of MXene inks and the exploration of functional devices. Here, we proposed a controllable surface grafting strategy for MXene flakes (p-MXene) with prepolymerized polydopamine macromolecules to protect against water and oxygen, enrich surface chemistry, and significantly optimize the rheological properties of the inks. The obtained p-MXene inks can adapt to screen-printing and other high-viscosity processing techniques, facilitating the development of patterned electromagnetic films and coatings. Interestingly, the printed MXene polarizer can freely switch and quantitatively control microwave transmission, giving an inspiring means for smart microwave modulation beyond the commonly reported shielding function. Moreover, the introduction of polydopamine nanoshell enables the infrared emissivity of MXene coating to be adjusted to a large extent, which can produce infrared anti-counterfeiting patterns in a thermal imager. Therefore, multifunctional antioxidant p-MXene inks will greatly extend the potential applications for the next-generation printable electronics and devices.

Original languageEnglish
Pages (from-to)16976-16986
Number of pages11
JournalACS nano
Volume16
Issue number10
DOIs
Publication statusPublished - 2022 Oct 25
Externally publishedYes

Keywords

  • MXene ink
  • electromagnetic interference shielding
  • functional coating
  • infrared anti-counterfeiting
  • printability
  • rheological property

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)
  • Physics and Astronomy(all)

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