Journal
RSC ADVANCES
Volume 5, Issue 12, Pages 8849-8858Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ra13383h
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Funding
- Romanian National Authority for Scientific Research, CNCS-UEFISCDI [PN-II-PT-PCCA-2013-4-1861, 272/2014]
- European Social Fund within the Sectorial Operational Program Human Resources Development [POSDRU/159/1.5/S/137750]
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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.
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