Target induced interfacial self-assembly of nanoparticles: A new platform for reproducible quantification of copper ions.

摘要: One of the main problems nanoparticle dispersion state change (e.g. from to aggregation) based surface-enhanced Raman scattering (SERS) detection is that dynamic process such in-solution reactions always uncontrollable. This leads poor reproducibility a narrow time window all strategies, and finally great difference between data diverse methods, even various sample batches. To address problem, facile, rapid SERS quantification protocol has been developed relying on target induced self-assembly at oil/water interfaces for copper ions analysis. In response copper, core-molecule-shell (CMS) nanoparticles spontaneously migrate interface are assembled into densely packed arrays generating strong plasmonic coupling, which enables stable, sensitive selective quantitation, as well visual detection. Also, this strategy shows capability determination large scale samples products can be stable least three weeks, successfully applied real The Target Induced Nanoparticle Self-Assembled Interface (TINSAI) employed both test quantitative detection, would provide platform on-site screening high-throughput with high sensitivity selectivity.