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Calixarene functionalization of TiO2 nanoarrays: an effective strategy for enhancing the sensor versatility

Abstract

Sensitive, selective, low-cost, and simply designed sensors for gases and analytes are highly attractive. The rational synergy between calixarenes (CA) and titania nanorods (TiO2NRs) and nanotubes (TiO2NTs) gives rise to completely new types of behavior that open unprecedented applications. First, the geometrical building of NRs and NTs leads to excellent signal amplification and transduction. Second, grafted CA create self-assembled monolayer (SAM) that switch order under thermal stimulus and generate stimuli-responsive behavior, thus promoting modulated sensing properties. Third, CA accelerate gas diffusion in the sensor yielding fast, sensitive, selective, and reproducible response to H2 at room temperature (RT). In addition, these systems may act as sensors for other analytes, such as the pesticide profenofos (PFF).

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Publication details

The article was received on 27 Feb 2018, accepted on 11 May 2018 and first published on 11 May 2018


Article type: Communication
DOI: 10.1039/C8TA01906A
Citation: J. Mater. Chem. A, 2018, Accepted Manuscript
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    Calixarene functionalization of TiO2 nanoarrays: an effective strategy for enhancing the sensor versatility

    I. Oueslati, A. Ghrairi, E. S. Ribeiro, L. A. E. Batista de Carvalho, J. C. Gil and J. A. Paixão, J. Mater. Chem. A, 2018, Accepted Manuscript , DOI: 10.1039/C8TA01906A

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