New luminophor-activators based on (fluoro)quinolone antibacterials

It was shown that (fluoro)quinolone antibiotics form strongly fluorescent solid-state complexes with Eu(III) and Tb(III) lanthanide ions, with a wavelength red-shift beneficial for applications to greenhouse-cover polymers. Complexes with optimal properties were prepared by the mechanical activation...

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Bibliographic Details
Published in:	Journal of luminescence Vol. 128; no. 11; pp. 1753 - 1757
Main Authors:	Polishchuk, A.V., Karaseva, E.T., Korpela, T., Karasev, V.E.
Format:	Journal Article
Language:	English
Published:	Elsevier B.V 01-11-2008
Subjects:	Fluoroquinolone Luminescence Luminophor activators Mechano-synthesis Fluoroquinolone Mechano-synthesis Luminescence Luminophor activators
Online Access:	Get full text
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Summary:	It was shown that (fluoro)quinolone antibiotics form strongly fluorescent solid-state complexes with Eu(III) and Tb(III) lanthanide ions, with a wavelength red-shift beneficial for applications to greenhouse-cover polymers. Complexes with optimal properties were prepared by the mechanical activation of fine-dispersed composite mixtures with the lanthanide salts. The spectral properties, photo-stability to UV-light, and compatibility with the polyethylene matrix were investigated. The formulation additives of the tablet forms of the antibiotic medicines did not quench the fluorescence from the lanthanide ions. Therefore, the outdated drug forms of the antibiotics can serve as cheap recyclable sources for the covering material of greenhouses. In addition, diphenylguanidine (DPG) was investigated as a coligand. DPG enhanced fluorescence of the fluoroquinolone complexes by decreasing the non-radiative energy loss through O–H vibration of H 2O.
ISSN:	0022-2313 1872-7883
DOI:	10.1016/j.jlumin.2008.04.002