News Column

New Biological Pigments Findings from National University Described

February 25, 2014

By a News Reporter-Staff News Editor at Life Science Weekly -- Investigators publish new report on Biological Factors. According to news reporting out of Mar del Plata, Argentina, by NewsRx editors, research stated, "The cationic Cu(II) and Fe(III) complexes of tetra(4-pyridyl)porphyrin [T4PyP](4+) have been combined with the anionic [H4TPPS](2-) to obtain bimetallic J-aggregate nanostructures defined by the tendency to form the (FeOCuII)-O-III bridge along with electrostatic interactions."

Our news journalists obtained a quote from the research from National University, "The Resonant Raman spectra of the bimetallic structures revealed subtle but detectable changes of two significant bands: 661 cm(-1) (attributed to the out-of-plane bending of the Cu-N bond) and 805 cm(-1) (sensitive to the nature of the axial ligand opposite to the oxo ligand), both indicating the important role of the metallic centers in the formation of the CuFe nanorod aggregate. The sensing performance of the aggregates was explored monitoring the absorbance changes in the visible region induced by adding different analytes (H2O2, NO2-, SO32- and N-3(-))."

According to the news editors, the research concluded: "The bimetallic nanostructures maintain the J-aggregation structure after successive addition of H2O2 with an increasing absorption response at 435 cm(-1) (monomer band); this architecture was the most sensitive arrangement confirming the synergic effect of the two metals."

For more information on this research see: Optical properties and sensor applications of bimetallic nanostructures of porphyrins. Sensors and Actuators B-Chemical, 2014;193():121-127. Sensors and Actuators B-Chemical can be contacted at: Elsevier Science Sa, PO Box 564, 1001 Lausanne, Switzerland (see also Biological Factors).

Our news journalists report that additional information may be obtained by contacting M. Hamer, Natl Univ Mar Del Plata, CONICET, Inst Mat Sci & Technol INTEMA, Natl Res Council, RA-7600 Mar Del Plata, Buenos Aires, Argentina. Additional authors for this research include J.P. Tomba and I.N. Rezzano.

Keywords for this news article include: Argentina, Porphyrins, Mar del Plata, South America, Nanostructural, Nanostructures, Nanotechnology, Biological Factors, Biological Pigments, Emerging Technologies

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Source: Life Science Weekly

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