Interfacial dipole moment engineering in self-recoverable mechanoluminescent platform

Hong In Jeong, Hye Sung Jung, Cheong Beom Lee, So Jung Kim, Jeong Sik Jo, Seongkyu Song, Seo Jin Ko, Dong Won Kang, Soon Moon Jeong, Jae Won Jang, Kyeounghak Kim, Jihoon Lee, Hyosung Choi

Research output: Contribution to journalArticlepeer-review

Abstract

Harnessing the potential of mechanoluminescence (ML) for practical applications necessitates innovations that maximize brightness while simplifying the platform. Our study introduces a pioneering interfacial modification technique that enhances the internal triboelectric field in a self-recoverable ML platform based on zinc sulfide@metal oxide phosphor and a polydimethylsiloxane matrix. By chemically functionalizing the surface of metal oxide shells with benzoic acid derivatives, we modulate surface charge density thereby intensifying the triboelectric field within the ML platform. Utilizing a range of derivatives with varying dipole moments establishes a direct relationship between dipole moment strength and triboelectric enhancement. Notably, introducing aminobenzoic acid (ABA) onto the surface of the aluminum oxide (AlOx) shell results in a significant increase in ML brightness. Our strategy to easily adjust the ML brightness has been applied to anti-counterfeiting applications. Our study not only reveals the correlation between surface triboelectric fields and ML performance but also provides the possibility for practical use of self-recoverable ML platforms in various application fields, including smart textiles, health monitoring systems, and wearable displays.

Original languageEnglish
Pages (from-to)4-11
Number of pages8
JournalMaterials Today
Volume81
DOIs
StatePublished - Dec 2024

Keywords

  • Dipole moment
  • Mechanoluminescence
  • Self-recoverable
  • Surface functionalization
  • Triboelectric field

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