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Issue 7, 2013
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Abstract

Rhodamine group modified SBA-15 nanocomposite (R3-SBA-15) is investigated as a highly selective Hg2+ sensor. The colorless sensor converts to red color in the presence of Hg2+ with the fluorescent detection limit for Hg2+ in MeCN–H2O solution (9 : 1 v/v) being 15 ppb levels and exhibits excellent Hg2+-specific luminescence enhancement over various competitive cations, including alkali and earth, the first-row transition metals and heavy metals. According to the definition of Boolean Logic, using Hg2+ and S2− as inputs, the fluorescence intensity signal changes of R3-SBA-15 as outputs, R3-SBA-15 can act as an INHIBIT logic gate. All the results suggest that R3-SBA-15 was possible for real-time quantitative detection of Hg2+ and the convenience for potential application as a logic gate operated at the nanoscale level.

Graphical abstract: Rhodamine group modified SBA-15 fluorescent sensor for highly selective detection of Hg2+ and its application as an INHIBIT logic device

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Article information


Submitted
18 Aug 2012
Accepted
03 Dec 2012
First published
04 Dec 2012

RSC Adv., 2013,3, 2227-2233
Article type
Paper

Rhodamine group modified SBA-15 fluorescent sensor for highly selective detection of Hg2+ and its application as an INHIBIT logic device

Z. Dong, X. Tian, Y. Chen, J. Hou and J. Ma, RSC Adv., 2013, 3, 2227
DOI: 10.1039/C2RA21864J

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