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Selective conversion of furfural to cyclopentanone and cyclopentanol by different preparation methods of Cu-Co catalysts

29-10-2014 | Xing-Long Li; Jin Deng; Tao Pan; Chu-Guo Yu; Hua-Jian Xu; Yao Fu, Green Chemistry, 2014

Cu-Co catalysts, prepared by co-precipitation method (CP) and oxalate sol-gel method (OG), can selectively convert furfural (FFA) to cyclopentanone (CPO) and cyclopentanol (CPL), respectively. The conversion of FFA to CPO and CPL by Cu-Co catalysts was studied in aqueous solution. We found that ...

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Aqueous production of oxygen atoms from hydroxyl radicals

29-10-2014 | Edelsys Codorniu-Hernandez; Kyle Wm. Hall; Daniel Ziemianowicz; Sheelagh Carpendale; Peter Kusalik, Physical Chemistry Chemical Physics, 2014

The behavior of the hydroxyl radical (OH*) in solution is significant to a broad range of scientific and technological fields. OH* is considered a highly reactive, short-lived species and previous studies have neglected the possibility of encounters of two OH* in solution. However, these ...

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Coordination of Ln3+ in ortho-tetramethyl-substituted cucurbituril supramolecular assemblies formed in the presence of cadmium nitrate: potential applications for isolation of heavier lanthanides

29-10-2014 | Jia-Jia Zhou; Xin Yu; Ying-Chun Zhao; Xin Xiao; Yun-Qian Zhang; Sai-Feng Xue; Zhu Tao; Jing-Xin Liu; Qian-Jiang Zhu, CrystEngComm, 2014

Coordination in supramolecular assemblies was investigated by reacting a series of lanthanide cations (Ln3+) and a new alkyl-substituted cucurbituril, the ortho-tetramethyl-substituted cucurbituril (o-TMeQ[6]), in the presence of cadmium nitrate as an inorganic structure inducer in neutral ...

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The photo-orientation of azobenzene in viscous solutions, simulated by a stochastic model

29-10-2014 | Valentina Cantatore; Giovanni Granucci; Maurizio Persico, Physical Chemistry Chemical Physics, 2014

We report a computational study of the photo-orientation kinetics in a viscous solution of azobenzene in ethylene glycol, under irradiation with linearly polarized light. The development of anisotropy and its interplay with photoisomerization are simulated by a stochastic model. A distinctive ...

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Facile one-pot method synthesis CNT/GeO2 nanocomposite for high performance Li ion battery anode material

29-10-2014 | Fangfang Jia; Lingxiao Song; Wei Wei; Peng Qu; Maotian Xu, New Journal of Chemistry, 2014

For the first time, we synthesized CNT/GeO2 nanocomposite via a facile one-pot solution method. The as-prepared CNT/GeO2 nanocomposite appears as webs of curved nanotubes and nanoparticles, forming strong intertwined entanglements with a three-dimensional (3D) network structure. Such a hybrid ...

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Fabrication of folate bioconjugated near-infrared fluorescent silver nanoclusters for targeted in vitro and in vivo bioimaging

28-10-2014 | Yong Wang; Cong Dai; Xiu-Ping Yan, Chemical Communication, 2014

Thiolpolyethyleneimine stabilized silver nanoclusters (SH-PEI-AgNCs) with intense NIR fluorescence and chemical stability were fabricated in aqueous solution. The SH-PEI-AgNCs were subsequently bioconjugated with folate for targeted in vitro and in vivo bioimaging.

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Solution scattering studies of the hierarchical assembly of porphyrin trimers based on benzene triscarboxamide

28-10-2014 | Richard van Hameren; Arend van Buul; Dirk Visser; Richard K Heenan; Stephen M King; Alan Rowan; Roeland J.M. Nolte; ..., Soft Matter, 2014

The self-assembly of achiral and chiral porphyrin trimers based on benzene triscarboxamide in solution is studied with the help of NMR, FT-IR, UV-vis, and CD spectroscopy. These studies revealed that in apolar solvents the porphyrin trimers self-assembled in columnar stacks via a combination of ...

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Rational design of a room temperature molecular spin switch. The light-driven coordination induced spin state switch (LD-CISSS) approach

28-10-2014 | M. Dommaschk; C. Schütt; S. Venkataramani; U. Jana; C. Näther; F. D. Sönnichsen; R. Herges, Dalton Transactions, 2014

Extensive use of quantum chemical calculations has been made to rationally design a molecule whose spin state can be switched reversibly using light of two different wavelengths at room temperature in solution. Spin change is induced by changing the coordination number of a nickel complex. The ...

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Make PyrophosphateVisible: The First Precipitable and Real-time Fluorescent Sensor for Pyrophosphate in Aqueous Solution

28-10-2014 | Xiao-Qi Yu; Shu-Yan Jiao; Kun Li; Xin Wang; Zeng Huang; Lin Pu, Analyst, 2014

An in situ generated BINOL-DPA-Zn(II) complex was presented as a chemo-sensing ensemble for the recognition of phosphate-based molecules. The ensemble showed high sensitivity and selectivity for pyrophosphates (PPi), it could be successfully applied in imaging PPi in living cells. Notably, ...

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Supramolecular interaction of labetalol with cucurbit[7]uril for its sensitive fluorescence detection

28-10-2014 | Huangxian Ju; Chang-Feng Li; Jianxia Feng, Analyst, 2014

This work studied the host-guest interaction between cucurbit[7]uril (CB[7]) and labetalol in acidic aqueous solution and proposed a simple competitive method for fluorescence detection of labetalol. The binding constant of labetalol-CB[7] was (1.83±0.22)×106 M−1, which was much greater than ...

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