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Issue 43, 2016
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Analyte-responsive gated hollow mesoporous silica nanoparticles exhibiting inverse functionality and an AND logic response

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Abstract

A multifunctional nanoparticle with designed selectivity was made using hollow mesoporous silica, ship-in-a-bottle synthesis of a crystalline solid-state detector, and protection of the crystal by acid-responsive nanogates. The system demonstrates the inverse application of the usual trapping of contents by the gate followed by their release. Instead, the gate protects the contents followed by selective exposure. Crystallization of [Pt(tpy)Cl](PF6) (tpy = 2,2′:6′,2′′-terpyridine) inside the cavity of hollow mesoporous silica created the unique core/shell nanoparticle. The crystalline core becomes fluorescent in the presence of perchlorate. By condensing an acid-sensitive gate onto the particle, access to the pores is blocked and the crystal is protected. The new nanomaterial obeys Boolean AND logic; only the presence of both the analyte (ClO4) and acid results in the optical response.

Graphical abstract: Analyte-responsive gated hollow mesoporous silica nanoparticles exhibiting inverse functionality and an AND logic response

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Publication details

The article was received on 26 Feb 2016, accepted on 14 Oct 2016 and first published on 17 Oct 2016


Article type: Communication
DOI: 10.1039/C6NR01640E
Citation: Nanoscale, 2016,8, 18296-18300
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    Analyte-responsive gated hollow mesoporous silica nanoparticles exhibiting inverse functionality and an AND logic response

    T. M. Guardado-Alvarez, W. Chen, A. E. Norton, M. M. Russell, W. B. Connick and J. I. Zink, Nanoscale, 2016, 8, 18296
    DOI: 10.1039/C6NR01640E

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