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Investigators at Institute of Chemistry Describe Findings in Chemiluminescence (Dual-Peak Electrogenerated Chemiluminescence of Carbon Dots for Iron...

August 1, 2014



Investigators at Institute of Chemistry Describe Findings in Chemiluminescence (Dual-Peak Electrogenerated Chemiluminescence of Carbon Dots for Iron Ions Detection)

By a News Reporter-Staff News Editor at Health & Medicine Week -- Researchers detail new data in Chemiluminescence. According to news reporting from Beijing, People's Republic of China, by NewsRx journalists, research stated, "Carbon dots (CDs) have rigorously been investigated on their unique fluorescent properties but rarely their electrogenerated chemiluminescence (ECL) behavior. We are here to report a dual-peak ECL system of CDs, one at -2.84 V (ECL-1) and the other at -1.71 V (ECL-2) during the cyclic sweep between -3.0 and 3.0 V at scan rate of 0.2 V s(-1) in 0.1 M tetrabutyl ammonium bromide (TBAB) ethanol solution, which is more efficiency to distinguish metallic ions than single-peak ECL."

The news correspondents obtained a quote from the research from the Institute of Chemistry, "The electron transfer reaction between individual electrochemically reduced nanocrystal species and coreactants led to ECL-1, in which the electron injected to the conduction band of CDs in the cathodic process. Ion annihilation reactions induced direct formation of exciplexes that produced another ECL signal, ECL-2. ECL-1 showed higher sensitivity to the surrounding environment than ECL-2 and thus was used for ECL detection of metallic ions. Herein, we can serve as an internal standard method to detect iron ions."

According to the news reporters, the research concluded: "A linear relationship of the intensity ratio R of ECL-1 and ECL-2 to iron ions was observed in the concentration extending from 5 X 10(-6) 8 X 10(-5) M with a detection limit of 7 x 10(-7) M."

For more information on this research see: Dual-Peak Electrogenerated Chemiluminescence of Carbon Dots for Iron Ions Detection. Analytical Chemistry, 2014;86(12):5620-5623. Analytical Chemistry can be contacted at: Amer Chemical Soc, 1155 16TH St, NW, Washington, DC 20036, USA. (American Chemical Society - www.acs.org; Analytical Chemistry - www.pubs.acs.org/journal/ancham)

Our news journalists report that additional information may be obtained by contacting P.J. Zhang, Chinese Academy Sci, Inst Chem, Key Lab Analyt Chem Living Biosyst, Beijing Natl Lab Mol Sci, Beijing 100190, People's Republic of China. Additional authors for this research include Z.J. Xue, D. Luo, W. Yu, Z.H. Guo and T. Wang (see also Chemiluminescence).

Keywords for this news article include: Beijing, People's Republic of China, Asia, Chemiluminescence

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Health & Medicine Week


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