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多并苯和杂环多并苯材料研究进展 被引量:4
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作者 傅妮娜 田波 +2 位作者 黄红艳 赵保敏 黄维 《南京邮电大学学报(自然科学版)》 北大核心 2013年第4期105-114,118,共11页
多并苯芳烃(polyacenes)是一类线性并芳香环碳氢化合物。多并苯化合物具有独特的线性π电子离域特性(linear delocalizedπ-system),是一类独特的有机半导体材料。多并苯材料由于其在有机电子学器件中的潜在应用而受到广泛的关注和研究... 多并苯芳烃(polyacenes)是一类线性并芳香环碳氢化合物。多并苯化合物具有独特的线性π电子离域特性(linear delocalizedπ-system),是一类独特的有机半导体材料。多并苯材料由于其在有机电子学器件中的潜在应用而受到广泛的关注和研究,多并苯化合物能够实现高度有序的分子堆积,因此,能够被应用于大规模功能器件中。近20年来,高性能多并苯类材料的合成及应用已取得显著进展,尤其在有机场效应晶体管(OFETs)应用领域,多并苯类材料已发展成为OFETs的主要材料。文中综述了在OFETs中多并苯和杂环多并苯分子结构对材料电学性能的影响,最后展望了多并苯和杂环多并苯的应用前景。 展开更多
关键词 多并苯芳烃 有机场效应晶体管 有机半导体 迁移率 稳定性
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Quality, Quantity and Origin of PAHs (Polycyclic Aromatic Hydrocarbons) in Lotic Ecosystem of Al-Hilla River, Iraq
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作者 Fikrat M. Hassan Jasim M.Salman +2 位作者 Atheer S.N. Al-Azawey Nadhir Al-Ansari Sven Kutsson 《Journal of Civil Engineering and Architecture》 2014年第8期1026-1038,共13页
The Euphrates River is one of the major rivers in Iraq. When it reaches north of Hilla city, it will be divided in two branches. One of these braches flows toward Hilla city. On this branch, six locations were studied... The Euphrates River is one of the major rivers in Iraq. When it reaches north of Hilla city, it will be divided in two branches. One of these braches flows toward Hilla city. On this branch, six locations were studied for the water quality of the Euphrates water. The present paper is aimed to fill the gap of information of the presence of PAHs (poly aromatic hydrocarbons) in water and sediment of AI-Hilla River, as well as to determine the quality and quantity of some PAHs. The depth of the river ranges from 2 m to 6 m. The quality, quantity and the origin of PAHs were studied in the water and sediment of Al-Hilla River. In addition, some physical and chemical properties were studied at six sites along the studied area, for the period March, 2010 to February, 2011. Sixteen PAHs that are listed by USEPA (US Environmental Protection Agency) as priority pollutants (Nap (naphthalene), Acpy (acenaphthylene), Acp (acenaphthene), Flu (fluorine), Phen (phenanthrene), Ant (anthracene), Flur (fluoranthene), Py (pyrene), B(a)A (benzo(a)anthracene), Chry (chrysene), B(b)F (benzo(b)fluoranthene), B(k)F (benzo(k)fluoranthene), B(a)p (benzo(a)pyrene), BbA (dibenzo(a,h)anthracene), B(ghi)P (benzo(ghi)perylene) and Ind (indeno (1,2,3-cd) pyrene)) were detected in Al-Hilla river. High concentrations of PAHs were detected in the sediment relative to that within the water. The present study revealed that the origin of PAHs in water and sediment might be the pyrogenic origin. 展开更多
关键词 PAHS food chain water sediment Euphrates River
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