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| 1 | Synthesis and light-emitting properties of 2-(N-phenyl-α-naphthylamino) and 2-dimesitylboron-7-(N-phenyl-α-naphthylamino)-9,9-diethylfluorene显示文摘A fluorescent organic triarylamine with a symmetric structure, 2,7-bis(N-α-naphthyl-phenylamino)-9,9- diethylfluorene (NPAEF) was synthesized using two methods, modified Ullmann coupling and modified palladium-catalyzed amination. An activated copper and a combination of Pd(OAc)2/P(t-Bu)3 and Pd(dba)2/P(t-Bu)3 were selected as catalysts to improve yields of reactions. These synthetic procedures were also successfully applied to an asymmetric 2-dimesitylboron-7-(N-phenyl-α-naphthylamino)-9,9-diethylfluorene (BNPEF). Photoluminescent emission peaks in solid film and in diluted solution of NPAEF were both observed at 461 nm, while the main emission peaks of BNPEF appeared at 422 nm in hexane, and at 480 nm in methanol. The double emission peaks of BNPEF in hexane reflected fine structure in the vibrational state. With an increasing polarity of solvent, the main PL emission peaks were red-shifted and vibrational fine structure disappeared. Additionally, energy levels of NPAEF were investigated and an electroluminescence (EL) device of ITO/PVK:NPAEF/Al was fabricated, which showed a turn-on voltage of 9 V and peaked at 462 nm. The EL spectrum was in good agreement with PL spectrum, which indicated that they were from the same emitting center in the device. | ZHANG WenGuan HE ZhiQun HUI GuanBao MU LinPing WANG YongSheng ZHAO ShengMin JING XiPing | 2009 | Science China Chemistry2009，52，7： | 3 |
| 2 | Long-term effect of chemical fertilizer, straw, and manure on soil chemical and biological properties in northwest China显示文摘 | Enke Liu Changrong Yan Xurong Mei Wenqing He So Hwat Bing Linping Ding Qin Liu Shuang Liu Tinglu Fan | 2010 | Geoderma2010，，3： | 1 |
| 3 | Effects of Tamarisk shrub on physicochemical properties of soil in coastal wetland of the Bohai Sea显示文摘There are many different and even controversial results concerning the effects of Tamarisk on the physicochemical properties of soil. A year-round monitoring of soil salinity, p H and moisture is conducted beneath the Tamarisk shrub in a coastal wetland in the Bohai Sea in China, to ascertain the effects of Tamarisk on the physicochemical properties of soil in coastal wetland. Compared with the control area, the soil moisture content is lower around the area of the taproot when there is less precipitation in the growing season because of water consumption by Tamarisk shrub. However, the soil moisture content is higher around the taproot when there is more precipitation in the growing season or in the non-growing period because of water conservation by the rhizosphere. The absorption of salt by the Tamarisk shrub reduces the soil salinity temporarily, but eventually salt returns to the soil by the leaching of salt on leaves by rainfall or by fallen leaves. The annual average soil moisture content beneath the Tamarisk shrub is lower than the control area by only 6.4%, indicating that the Tamarisk shrub has little effect on drought or water conservation in soils in the temperate coastal wetland with moderate annual precipitation. The annual average salinity beneath the Tamarisk shrub is 18% greater than that of the control area, indicating that Tamarisk does have an effect of rising soil salinity around Tamarisk shrubs. The soil p H value is as low as 7.3 in summer and as high as 10.2 in winter. The p H of soil near the taproot of the Tamarisk shrubs is one p H unit lower than that in the control area during the growing season. The difference in p H is less different from the control area in the non-growing season, indicating that the Tamarisk shrub does have the effect of reducing the alkalinity of soil in coastal wetland. | HE Xiuping WANG Baodong XIE Linping XIN Ming WANG Wei WANG Zicheng ZHANG Wenquan WEI Qinsheng | 2016 | Acta Oceanologica Sinica2016，35，5： | 1 |
| 4 | Long-term effect of chemical fertilizer, straw, and manure on soil chemical and biological properties in northwest China显示文摘 | Enke Liu Changrong Yan Xurong Mei Wenqing He So Hwat Bing Linping Ding Qin Liu Shuang Liu Tinglu Fan | 2010 | Geoderma2010，，3： | 1 |
| 5 | Red non- doped electroluminescent dyes based on arylamino fumaroni- trile derivatives显示文摘 | Zhang Wenguan He Zhiqun Mu Linping | 2010 | Dyes Pigments2010，85，3： | 1 |
| 6 | Synthesis,microstructure,and formation mechanism of a potential neutron shielding material:WAlB显示文摘The recent re-discovery of nano-laminated,ternary transition metal borides called‘MAB’phases(M=transition metal,A=Al,and B=B)has allowed for an alternative candidate material for certain high-performance applications[1,2].The discovery of de-sirable MAB phase properties including near-room temperature magnetocaloric effects of Fe 2 AlB 2[3],high-temperature oxidation resistance of MoAlB[4],and single-layer 2D molybdenum boride sheets obtained through the chemical exfoliation of laminated compounds has resulted in an increase in research into their syn-thesis and properties[5]. | Dongya Zhang Peter Richardson Meng Wang Hanjun Tu Cong Li Linping He Haibin Zhang Liqun Shi | 2022 | Journal of Materials Science & Technology2022，，31： | 0 |
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