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MIT chemists have devised a new chemical reaction that allows them to synthesize a phosphorus-containing ring, using a catalyst to add phosphorus to simple organic compounds called alkenes.
High levels of molecular chlorine found in arctic atmosphere（图）
Molecular chlorine Bromine chemistry
2014/3/17
Scientists studying the atmosphere above Barrow, Alaska, have discovered unprecedented levels of molecular chlorine in the air, a new study reports.
Conveinient Synthesis and Anion Recognition Property of Acylhydrazone-based Molecular Tweezer Receptors
Anion recognition molecular tweezer acylhydrazone
2010/10/19
Three acylhydrazone-based compounds were designed as novel neutral sensors for anions, and synthesized by simple steps in good yields. Their anion recognition properties were studied by UV-vis and 1H-...
The activation energy of the nitrogen acceptor in p-type ZnO film grown by plasma-assisted molecular beam epitaxy
A. Semiconductors B. Impurities in semiconductors C. Optical properties D. Hall effect measurement
2011/12/13
The nitrogen-doped, p-type ZnO film was grown by plasma-assisted molecular beam epitaxy (P-MBE) on c-plane sapphire (c-Al2O3) using radical NO as oxygen and nitrogen sources. The activation energy of ...
氟化钾团簇的相变、成核和重结晶的分子动力学模拟（Molecular Dynamics Simulation of Phase Transition， Nucleation， Recrystalization of KF Clusters）
分子动力学模拟 相变 成核 重结晶 氟化钾团簇
2010/8/24
我们利用Born-Mayer-Huggins相互作用势函数对(KF)N(N=108，256，500和864)团簇进行了分子动力学(MD)模拟。为了避免周期性边界条件对相变、成核和重结晶的干扰作用，对体系采用了自由边界。基于MD模拟结果，对团簇的熔化温度、熔化焓、扩散系数、成核速率、固液界面自由能、临界核大小等进行了计算和讨论。在对(KF)864双晶团簇的热退火模拟中，观察到了固态的重结晶和晶粒的生...
KIT-1介孔分子筛的化学修饰及吸附性能（Chemical Modification and Adsorption of the Pure Silica Mesoporous Molecular Sieve KIT-1 ）
介孔分子筛 KIT-1 化学修饰 吸附容量 水热稳定性
2010/8/25
The pure silica mesoporous molecular sieve (KIT-1) was chemically modified using both organic and inorganic precursors and characterized using FTIR, XRD, MAS NMR, TG-DSC and physical adsorption-desorp...
含潜在异构手性双臂配体的螺旋组装和手性聚集（Helical Assembly and Chiral Aggregations Based on Atropisomeric Molecular Clips）
晶体结构 配合物 螺旋组装 手性聚集
2010/8/18
采用具有潜在异构手性的双臂配体，双吡啶二甲基联苯-2，2′-二酰肼，合成了4个双核螺旋配合物。配体与CdI2和Cu(NO3)2反应得到双核单螺旋化合物1和2，在化合物2中，由于C-H…π和π…π的协同相互作用沿ab面形成单一手性的二维平面。双核双螺旋化合物3(Ni(Ⅱ))和4(Co(Ⅱ))中的金属中心表现相同的绝对构型，说明含异构手性的配体能够把金属中心的手性从一个中心传递到另一个中心。
具有强蓝色荧光发射效应的二维四方格子化合物：萘普生锌配聚物（Coordination Polymer Based on Naproxen: 2D Molecular Square Grid with Strong Blue Fluorescent Emission）
奈普生 锌 配位聚合物 荧光 水热合成
2010/8/18
ZnCl2和(S)-奈普生(H-奈普生)反应得到一个二维层状配位聚合物[Zn((S)-Naproxen)(OH)]n (1)。这是第一个基于奈普生的配位聚合物，本文还提供了对奈普生和金属离子反应的新的见解。这一聚合物在室温下有很强的蓝色荧光并且具有一定的SHG效应。
A molecular bowl with barium ion covering one portal of decamethylcucurbit[5]uril as a ‘metal-ion-bottom’ has been synthesized. The structure of the molecular bowl has been confirmed by the single cry...