alexa The Effect of Metal-Remote Amino-Groups on Metal Center
e-ISSN: 2319-9849

Research & Reviews: Journal of Chemistry
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Research Article

The Effect of Metal-Remote Amino-Groups on Metal Center in Ruthenium (II) Complexes with Terpyridine Ligands

Li H1, Jeilani YA2, Melnyczuk JM1, Hibbard L2, Wu J3, Yerokun T2, Ingram CW1 and Harruna I1*

1Chemistry Department, Clark Atlanta University, Atlanta, USA.

2Department of Chemistry and Biochemistry, Spelman College, Atlanta, USA.

3School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, USA.

*Corresponding Author:
Harruna I
Chemistry Department, Clark Atlanta University
Atlanta, USA
E-mail: [email protected]

Received date: 13/07/2015; Accepted date: 16/07/2015; Published date: 21/07/2015

 

Abstract

The aim of this work is to study structure, spectra and optical properties of ruthenium complexes with applications in the development of biosensors for cellular imaging. The results showed that a ruthenium complex with 4′-(aminomethylphenyl) -2, 2′: 6′, 2′′ terpyridine ([Ru(TpyCH2NH2)2]2+) ligand has unique amino groups that reduce the energy gap between the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO). The all ligand-HOMO composition of [Ru(TpyCH2NH2)2]2+ is contributed by the amino groups of the TpyCH2NH2 ligands. In a cell uptake test and proliferation assay, the ruthenium complex with amino group show cytoplasmic location and dose-dependent cytotoxic effect on 647V bladder cancer cells but not the complex with carboxylic as ligand substituent. Both experiment and calculation explore how the amino substituents affect the properties of the complex compared to the simple [Ru(Tpy)2]2+ systems (where Tpy = 2, 2′: 6′, 2′′ terpyridine). The HOMO-LUMO energy gap calculation results of [Ru(TpyCH2NH2)2]2+ at the B3LYP/LANL2DZ level of theory is cons

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