News Column

Studies from Kyungpook National University in the Area of Styrenes Described

February 28, 2014



By a News Reporter-Staff News Editor at Science Letter -- A new study on Styrenes is now available. According to news reporting out of Taegu, South Korea, by NewsRx editors, research stated, "We fabricated quantum-dot doped plastic scintillators in order to control the emission wavelength. We studied the characterization of the quantum-dots (CdSe/ZnS) and PPO (2, 5-diphenyloxazole) doped styrene based plastic scintillators."

Our news journalists obtained a quote from the research from Kyungpook National University, "PPO is usually used as a dopant to enhance the scintillation properties of organic scintillators with a maximum emission wavelength of 380 nm. In order to study the scintillation properties of the quantum-dots doped plastic scintillators, the samples were irradiated with X-ray, photon, and 45 MeV proton beams. We observed that only PPO doped plastic scintillators shows a luminescence peak around 380 nm. However, both the quantum-dots and PPO doped plastic scintillators shows luminescence peaks around 380 nm and 520 nm. Addition of quantum-dots had shifted the luminescence spectrum from 380 nm (PPO) toward the region of 520 nm (Quantum-dots). Emissions with wavelength controllable plastic scintillators can be matched to various kinds of photosensors such as photomultiplier tubes, photo-diodes, avalanche photo-diodes, and CCDs, etc. Also quantum-dots doped plastic scintillator, which is irradiated 45 MeV proton beams, shows that the light yield of quantum-dots doped plastic scintillator is increases as quantum-dots doping concentration increases at 520 nm."

According to the news editors, the research concluded: "And also the plastic scintillators were irradiated with Cs-137 gamma-ray for measuring fluorescence decay time."

For more information on this research see: Scintillation properties of quantum-dot doped styrene based plastic scintillators. Journal of Luminescence, 2014;146():157-161. 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)

Our news journalists report that additional information may be obtained by contacting J.M. Park, Kyungpook National University, Dept. of Phys, Taegu 702701, South Korea. Additional authors for this research include H.J. Kim, Y.S. Hwang, D.H. Kim and H.W. Park (see also Styrenes).

Keywords for this news article include: Asia, Taegu, Styrenes, South Korea, Quantum Dots, Nanotechnology, Quantum Physics, Benzene Derivatives, Emerging Technologies

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


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Source: Science Letter


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