Metallic-Nanoparticle-Based Sensing: Utilization of Mixed-Ligand Monolayers

Offer Zeiri

Research output: Contribution to journalReview articlepeer-review

22 Scopus citations

Abstract

The last two decades have seen great advancements in fundamental understanding and applications of metallic nanoparticles stabilized by mixed-ligand monolayers. Identifying and controlling the organization of multiple ligands in the nanoparticle monolayer has been studied, and its effect on particle properties has been examined. Mixed-ligand protected particles have shown advantages over monoligand protected particles in fields such as catalysis, self-assembly, imaging, and drug delivery. In this Review, the use of mixed-ligand monolayer protected nanoparticles for sensing applications will be examined. This is the first time this subject is examined as a whole. Mixed-ligand nanoparticle-based sensors are revealed to be divided into four groups, each of which will be discussed. The first group consists of ligands that work cooperatively to improve the sensors' properties. In the second group, multiple ligands are utilized for sensing multiple analytes. The third group combines ligands used for analyte recognition and signal production. In the final group, a sensitive, but unstable, functional ligand is combined with a stabilizing ligand. The Review will conclude by discussing future challenges and potential research directions for this promising subject.

Original languageEnglish
Pages (from-to)3806-3820
Number of pages15
JournalACS Sensors
Volume5
Issue number12
DOIs
StatePublished - 24 Dec 2020
Externally publishedYes

Keywords

  • Janus particles
  • colorimetric sensors
  • functional ligands
  • ligand cooperativity
  • metallic nanoparticles
  • mixed-ligands monolayer
  • monolayer characterization
  • multiple analytes
  • nanoparticle stability

ASJC Scopus subject areas

  • Bioengineering
  • Instrumentation
  • Process Chemistry and Technology
  • Fluid Flow and Transfer Processes

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