Highly ordered luminescent calix[4]azacrown films showing an emission response selective to volatile tetrahydrofuran

Sensitive, selective, low-cost, and simply designed detectors for THF among other vapour organic compounds (VOCs) are highly attractive. Self-assembled molecular films with remarkable selective vapoluminescent response to VOC THF were fabricated using drop-casting of calix[4]azacrown-based J-aggrega...

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Bibliographic Details
Published in:Journal of materials chemistry. C, Materials for optical and electronic devices Materials for optical and electronic devices, 2014-11, Vol.2 (42), p.9012-9020
Main Authors: Oueslati, Issam, Paixão, José A., Shkurenko, Aleksander, Suwinska, Kinga, Seixas de Melo, J. Sérgio, Batista de Carvalho, Luís A. E.
Format: Article
Language:English
Subjects:
Emission
Hydrogen bonds
Luminescence
Materials selection
Nanoparticles
Switches
Vapour
Volatile organic compounds
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Summary:Sensitive, selective, low-cost, and simply designed detectors for THF among other vapour organic compounds (VOCs) are highly attractive. Self-assembled molecular films with remarkable selective vapoluminescent response to VOC THF were fabricated using drop-casting of calix[4]azacrown-based J-aggregates. The latter, stabilized viaC-H... pi and C-H...O hydrogen bond networks, assemble into nanoparticles that exhibit aggregation-induced emission (AIE) effect, which produces violet emission at room temperature in acetonitrile. The films are highly ordered and switch order at high temperature, leading to 2.5-fold luminescence enhancement and responsive behaviour.
ISSN:2050-7526
2050-7534
DOI:10.1039/C4TC01596G