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Investigators at Petru Poni Institute of Macromolecular Chemistry Detail Findings in Optoelectronics (Synthesis and optoelectronic characterization...

August 6, 2014



Investigators at Petru Poni Institute of Macromolecular Chemistry Detail Findings in Optoelectronics (Synthesis and optoelectronic characterization of some triphenylamine-based compounds containing strong acceptor substituents)

By a News Reporter-Staff News Editor at Electronics Newsweekly -- New research on Optoelectronics is the subject of a report. According to news reporting originating from Iasi, Romania, by VerticalNews correspondents, research stated, "Three novel triphenylamine-based compounds containing strong electron acceptor groups have been synthesized and their comparative photophysical properties are presented. These compounds were obtained by a two-step method: (i) triphenylamine compounds with one, two and three phenylacetylene arms were synthesized by Sonogashira reaction between iodine-substituted triphenylamines and phenylacetylene, followed by (ii) post-modification of these electron-rich alkynes by addition of the strong electron acceptor, tetracyanoethylene."

Our news editors obtained a quote from the research from the Petru Poni Institute of Macromolecular Chemistry, "Characterization of all oligomers was made by FTIR, H-1-NMR, UV-vis and fluorescence spectroscopy. A batochromic shifting of the UV and photoluminescence maxima was observed with the increase of the acceptor group number. The electrochemical behavior was studied by cyclic voltammetry. The cyclic voltammograms have evidenced that triphenylamine-phenylacetylene compounds undergo only oxidation processes while compounds modified with tetracyanoethylene show both oxidation and reduction peaks associated with donor and acceptor groups, respectively."

According to the news editors, the research concluded: "The donor-acceptor compounds coordinate metal ions (i.e., Hg2+, and Sn2+) by cyano groups resulting in the decreasing of charge transfer band intensity, and they can be used as chemosensors."

For more information on this research see: Synthesis and optoelectronic characterization of some triphenylamine-based compounds containing strong acceptor substituents. Journal of Luminescence, 2014;153():5-11. Journal of Luminescence can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands. (Elsevier - www.elsevier.com; Journal of Luminescence - www.elsevier.com/wps/product/cws_home/505700)

The news editors report that additional information may be obtained by contacting M. Grigoras, Petru Poni Inst Macromol Chem, Electroact Polymers Department, Iasi 700487, Romania. Additional authors for this research include T. Ivan, L. Vacareanu, A.M. Catargiu and R. Tigoianu.

Keywords for this news article include: Iasi, Europe, Romania, Optoelectronics

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Source: Electronics Newsweekly


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