Polydopamine-Stabilized Aluminum Nanocrystals: Aqueous Stability and Benzo[a]pyrene Detection

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dc.citation.firstpage3117
dc.citation.issueNumber3
dc.citation.journalTitleACS Nano
dc.citation.lastpage3124
dc.citation.volumeNumber13
dc.contributor.authorRenard, David
dc.contributor.authorTian, Shu
dc.contributor.authorAhmadivand, Arash
dc.contributor.authorDeSantis, Christopher J.
dc.contributor.authorClark, Benjamin D.
dc.contributor.authorNordlander, Peter
dc.contributor.authorHalas, Naomi J.
dc.contributor.orgLaboratory for Nanophotonics
dc.date.accessioned2019-08-16T14:47:27Z
dc.date.available2019-08-16T14:47:27Z
dc.date.issued2019
dc.description.abstractAluminum nanocrystals have emerged as an earth-abundant material for plasmonics applications. Al nanocrystals readily oxidize in aqueous-based solutions, however, transforming into highly stratified γ-AlOOH nanoparticles with a 700% increase in surface area in a matter of minutes. Here we show that by functionalizing Al nanocrystals with the bioinspired polymer polydopamine, their stability in aqueous media is dramatically increased, maintaining their integrity in aqueous solution for over 2 weeks with no discernible structural changes. Polydopamine functionalization also provides a molecular capture layer that enables the capture of polycyclic aromatic hydrocarbon pollutants in H2O samples and their detection by surface-enhanced Raman spectroscopy, when polydopamine-stabilized Al nanocrystal aggregates are used as substrates. This approach was used to detect a prime carcinogenic H2O pollutant, benzo[a]pyrene with a sensitivity in the sub part-per-billion range.
dc.identifier.citationRenard, David, Tian, Shu, Ahmadivand, Arash, et al.. "Polydopamine-Stabilized Aluminum Nanocrystals: Aqueous Stability and Benzo[a]pyrene Detection." <i>ACS Nano,</i> 13, no. 3 (2019) American Chemical Society: 3117-3124. https://doi.org/10.1021/acsnano.8b08445.
dc.identifier.doihttps://doi.org/10.1021/acsnano.8b08445
dc.identifier.urihttps://hdl.handle.net/1911/106256
dc.language.isoeng
dc.publisherAmerican Chemical Society
dc.rightsThis is an author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by the American Chemical Society.
dc.subject.keywordH2O stability
dc.subject.keywordSERS detection
dc.subject.keywordaluminum
dc.subject.keywordnanoparticles
dc.subject.keywordpolydopamine
dc.titlePolydopamine-Stabilized Aluminum Nanocrystals: Aqueous Stability and Benzo[a]pyrene Detection
dc.typeJournal article
dc.type.dcmiText
dc.type.publicationpost-print
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