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国家自然科学基金(20490210)

作品数:39 被引量:117H指数:5
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39 条 记 录,以下是 1-10
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3,3'-二对乙氧基苯基-3,3'-二羟基-2,2'-二茚叉基-1,1'-二酮的合成
2008年
目的合成新型的光致变色化合物.方法联茚满烯二酮类光致变色磁性化合物在晶体状态下光照变色,同时产生稳定的自由基.这些特殊的性质使得这一系列化合物具有巨大的潜在应用价值.连用格式试剂与酮加成的经典反应.结果合成了新的(联茚满)烯二酮类化合物即3,3’-二对乙氧基苯-基3,3’-二羟基-2,2’-二茚叉基-1,1’-二酮.结论红外、核磁、元素分析、晶体结构4种波谱手段能确定其结构.
王昌青贾硕杰
关键词:光致变色
理论研究BrCl^+低激发电子态势能曲线和光谱性质
2008年
应用量子化学中高等级的多参考组态相互作用方法计算了环境科学中重要的分子离子BrCl+的基态和低激发态的势能曲线与光谱常数,详细分析了旋轨耦合作用对电子结构和光谱性质的影响,确认了基态X2Π和低激发电子态的多组态特征,得到了基态X2Π的旋轨耦合分裂能1814cm-1,与实验值2070cm-1接近.预测了2Π(Ⅱ)态的旋轨耦合分裂能为766cm-1.估算了3/2(Ⅲ)-X3/2和1/2(Ⅲ)-1/2(Ⅰ)跃迁的偶极跃迁矩和Frank-Condon因子,讨论了它们的跃迁辐射寿命.
王明伟王炳武陈志达
关键词:旋轨耦合低激发态势能曲线
A Coordination polymer with the 1H-tetrazol-5-yl-carboxylic acid and 1,2-bis(4-pyridyl)ethane
<正>The tetrazole and carboxyl functional groups have received intense attention for decades respectively for t...
Qin-Xiang Jia En-Qing Gao~* Department of Chemistry,East China Normal University,Shanghai Key Laboratory of Green Chemistry and Chemical Processes,Shanghai 200062
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Synthesis and Mesomorphic Properties of 2-(4-Alkoxybenzoyloxy or 4-Alkoxycinnamoyloxy)-5-oxo-2,5-dihydrofurans
2005年
Two series of p-alkoxybenzoates Ia-If and p-alkoxycinnamates IIa-IIf, each species beating one terminal furanone, have been synthesized and characterized by IR, ^13C NMR, ^1H NMR, MS spectra and elemental analysis. The mesogenic properties of both series of furanones have been studied by polarizing optical microscopy and differential scanning calorimetry (DSC). The relationship between structures and mesogenic properties was discussed. The results show that the increased alkoxy chain length (C7-C12) and the bridging groups between the benzene ring and the furanone ring affected the mesomorphic properties greatly, and the two series of furanones might display monotropic or enantiotropic nematic (N) or semetic C (SmC) mesophases and different mesomorpic phase temperature ranges corresponding to different carbon chain length.
郭辉韩杰王海英孟继本
关键词:FURANONEBENZOATECINNAMATESYNTHESIS
发光Pt~Ⅱ-Cu~Ⅰ异核配合物[Pt_4Cu_2(edt)_4(PPh_3)_6](ClO_4)_2(4H_2O)的合成及其表征(英文)被引量:3
2007年
Self-assembly between Pt(phen)(edt) (phen=phenanthroline, edt=1,2-ethanedithiolate) and Cu(PPh3)2(MeCN)2(ClO4) (PPh3=triphenylphosphine) gave rise to formation of heterohexanuclear complex Pt4Cu2(edt)4(PPh3)6(ClO4)2(4H2O) (1). The complex was characterized by elemental analyses, ES-MS, UV-Vis, IR, 31P NMR spectroscopy and X-ray crystallography. The molecule consists of two Pt2Cu(edt)2(PPh3)3 units which has a centrosymmmetric inversion to give a cyclic heterohexanuclear skeleton. The PtⅡ and CuⅠ center adopt square-planar and trigonal coordination modes, respectively. The compound shows intense emission at 632 nm in the solid state and at 678 nm in frozen dichloromethane glass at 77 K.
陈燕丹施林熙褚月梅张礼仪陈忠宁
关键词:异核发光
碳纳米管负载纳米CdSe复合材料的微波合成及其光催化性能
2010年
以CNTs为模板,硒粉(Se)和硝酸镉[Cd(NO3)2]为原料,水合肼和氨水分别作为还原剂和络合剂,采用微波法合成了CNTs负载CdSe纳米粒子复合材料(CdSe/CNTs,简称F),其结构经XRD,SEM和EDS表征。以酸性品红为目标降解物,用UV-Vis法研究了F的光催化性能。结果表明,在紫外灯下照射60 min,F对酸性品红的降解率达99%,比CdSe纳米粒子高出38%。
李文婷王强倪娜朱露露吴华强
关键词:CNTS光催化微波合成光催化性能酸性品红
邻苯二甲酸单乙酯铜配合物的晶体结构与强反铁磁性(英文)被引量:2
2008年
Copper(Ⅱ)carboxylates have been extensivelystudied from different points of view because thecarboxylato anions exhibit different bonding
贾丽慧刘祖黎刘蔚谷云飞姚凯伦
不同形貌的Cu2O:可控合成及光学性质(英文)被引量:5
2010年
Cuprous oxide(Cu2O) hexapodal branch structure with high uniformity was prepared by a solution phase route using sodium dodecyl sulfate as a capping agent.The shapes of Cu2O crystal(flower-like structure,nanocube and nanoplate) were tuned by varying species and concentrations of surfactants to control the growth rate on different crystal planes of Cu2O.Cu2O nanostructures were characterized by UV-Vis spectroscopy,XRD,TEM and SEM.XRD result shows that the obtained Cu2O belongs to cubic phase.TEM and SEM results demonstrate that specie and concentration of surfactants play a key role in the formation of various morphologies of Cu2O.The formation mechanism is discussed.Moreover,the optical properties of the obtained Cu2O are shape-dependent.
尚通明关明云孙建华周全法徐正
关键词:氧化亚铜形貌控制光学性质
Ionic Liquid Based Electrolyte with Mesoporous Silica SBA-15 as Framework for Quasi-solid-state Dye-sensitized Solar Cells
2006年
Quasi-solid-state electrolytes were fabricated with mesoporous silica SBA-15 as a framework material. Ionic conductivity measurements revealed that SBA-15 can enhance the conductivity of the quasi-solid-state electrolyte. The diffusion coefficients of polyiodide ions such as Ⅰ3ˉ and Ⅰ5ˉ which were confirmed by Raman spectroscopic measurement, were about twice larger than that of I-. The optimized photoenergy conversion efficiency of dye-sensitized solar cells (DSSC) with the quasi-solid-state electrolyte was 4.3% under AM 1.5 irradiation at 75 mW·cm^-2 light intensity.
杨红成云飞周治国陈志钢李富友易涛黄春辉
关键词:SBA-15
Two Series Novel Radical Compounds Bearing Mesogenic Cores with Long Alkoxyl Substituents
<正>Stable radicals, above all aminoxyl radicals, have been widely used as spin labels, reagents for redox or p...
GUO,Hui LI, Yan-Xia HAN, Jie MENG,Ji-Ben (Department of Chemistry, Nankai University, Tianjin 300071)
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