Issue 12, 2015

Phenothiazine and pyridine-N-oxide-based AIE-active triazoles: synthesis, morphology and photophysical properties

Abstract

Aggregation-induced emission (AIE) low molecular weight compounds based on triazoles, phenothiazine and pyridine-N-oxide units bonded by short flexible chains have been obtained by a “click” chemistry reaction. The photophysical properties were explored by UV-vis and photoluminescence spectroscopy in solution, water suspension, and amorphous and crystalline films. The UV-vis absorption spectra indicated a typical behavior for nanoparticle formation. An emission intensity enhancement of 233-fold higher was registered for the crystalline films compared to solutions, clearly indicating an aggregation-induced emission behavior. The morphology study, in suspension and film, monitored by dynamic light scattering, scanning electron microscopy and polarized light microscopy methods, indicated that nano- and micro-crystals of rose-like shapes and fibers were formed.

Graphical abstract: Phenothiazine and pyridine-N-oxide-based AIE-active triazoles: synthesis, morphology and photophysical properties

Article information

Article type
Paper
Submitted
29 Oct 2014
Accepted
16 Dec 2014
First published
16 Dec 2014

RSC Adv., 2015,5, 8849-8858

Author version available

Phenothiazine and pyridine-N-oxide-based AIE-active triazoles: synthesis, morphology and photophysical properties

D. Belei, C. Dumea, E. Bicu and L. Marin, RSC Adv., 2015, 5, 8849 DOI: 10.1039/C4RA13383H

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