Scholar Bank Log in

Scholar Bank >
Applied Sciences >
Chemistry >
Information Resources on Chemistry >

Please use this identifier to cite or link to this item:

Title: Synthesis and Characterization of Novel Rhenium (L) Complexes towards Potential Biological Imaging Applications
Authors: Ranasinghe, K.
Hadunnetti, S.
Perera, I.C.
Perera, T.
Keywords: Rhenium tricarbonyl
NMR spectroscopy
Issue Date: 2016
Publisher: Springer Open
Citation: Ranasinghe, K., Hadunnetti, S., Perera, I.C., & Perera, T. (2016). Synthesis and Characterization of Novel Rhenium (L) Complexes towards Potential Biological Imaging Applications. Chemistry Central Journal, 10:71. doi: 10.1186/s13065-016-0218-4
Abstract: Background: Re(l) tricarbonyl complexes exhibit immense potential as fluorescence imaging agents. However, only a handful of rhenium complexes have been utilized in biological imaging. The present study describes the synthesis of four novel rhenium complexes, their characterization and preliminary biological studies to assess their potential as biological imaging agents. Results: Four facial rhenium tricarbonyl complexes containing a pyridyl triazine core, (LI = 5,5'(3-(2-pyridyl)-1,2,4- triazine-5,6-diyl)-bis-2-furansulfonic acid disodium salt and L2 = (3-(2- pyridyl)-5,6-diphenyM,2,4-triazine-4',4"- disulfonic acid sodium salt) have been synthesized by utilizing two different Re metal precursors, Re(CO)sBr and [Re(C0)3(H20)3]0Tf in an organic solvent mixture and water, respectively. The rhenium complexes [Re(C0)3(H20) Ll]+ (1), Re(CO)3L1 Br (2), [Re(C0)3(H20)L2]+ (3), and Re(CO)3L2Br (4), were obtained in 70-85% yield and characterized by ’H NMR, IR, UV, and luminescence spectroscopy, in both H20 and acetonitrile, complexes display a weak absorption band in the visible region which can be assigned to a metal to ligand charge transfer excitation and fluorescent emission lying in the 650-710 nm range. Cytotoxicity assays of complexes 1, 3, and 4 were carried out for rat peritoneal cells. Both plant cells (Allium cepa bulb cells) and rat peritoneal ceils were stained using the maximum non-toxic concentration levels of the compounds, 20.00 mg ml-1 for 1 and 3 and 5.00 mg ml-1 for 4 to observe under the epifluorescence microscope. In both cell lines, compound concentrated specifically in the nuclei region. Hence, nuclei showed red fluorescence upon excitation at 550 nm. Conclusions: Four novel rhenium complexes have been synthesized and characterized. Remarkable enhancement of fluorescence upon binding with cells and visible range excitability demonstrates the possibility of using the new complexes in biological applications.
ISSN: 1752-153X
Appears in Collections:Information Resources on Chemistry

Files in This Item:

File Description SizeFormat
Synthesis and Characterization of Novel Rhenium (L) Complexes towards Potential Biological Imaging Applications.pdf190.75 kBAdobe PDFView/Open
View Statistics

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.


Copyright © 2016 Library, University of Sri Jayewardenepura    Designed by: Library IT Division    Last updated: 24.08.2017