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User-recommended papers allows you to suggest a paper you would like to see on Nature China. When these papers appear on our site, users may comment and vote on them. To recommend a paper please use this form. Please note that you cannot recommend a paper you have authored. The editors will reject any self-recommendations. All comments and recommendation are checked by the editors and may be edited prior to publication on the site.

• Chemistry

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  • Selective Band Structure Modulation of Single-Walled Carbon Nanotubes in Ionic Liquids

    • 
      Original article citation: J. Am. Chem. Soc. 131," 5364 - 5365, (2009).

    • Categories: Chemistry, Physics, and Materials
    • Recommended by : lianfeng sun on 08/09/2009 03:28AM GMT
      
      Energy harvesting from hydraulic energy into electric energy may enable the structure of water-filled SWCNT as a promising candidate for the synthetic nanoscale power harvesting device in the future. Before looking into further applications, this communication gives us a comprehensible explanation of the mechanism involved.
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  • • 15+ votes

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  • Attosecond ionization gating for isolated attosecond electron wave packet and broadband attosecond xuv pulses

    • Pengfei Lan, Peixiang Lu, Wei Cao, Yuhua Li, Xinlin Wang
      Original article citation: Phys. Rev. A 76," (2007).

    • Categories: Physics and Chemistry
    • Recommended by : Feng He on 04/17/2008 08:29PM GMT
      
      Attosecond laser pulse is the most fast camera, with which people can capture the electron motion inside the atom or molecule. However, it's a big challenge to generate ultrashort, high power attosecond pulses. In this paper, Pengfei Lu et.al. present an interesting strategy to obtain an isolated attosecond pulse, which could be realized in the current laser technology. For this reason, I strongly recommend this paper to be appeared in Nature China.
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  • Daphnogirins A and B, Two Biflavones from Daphne giraldii

    • Guang-Xiong Zhou, Ren-Wang Jiang, Yan Cheng, Wen-Cai Ye, Jian-Gong Shi, Ning-Bo Gong, Yang Lu
      Original article citation: Chem. Pharm. Bull. 55," 1287 - 1290, (2007).

    • Categories: Chemistry
    • Recommended by : Qichao Zhao on 02/18/2008 11:31PM GMT
      
      It is quite a hot area using chromatographic separation technique to separate and analyse the components of traditional Chinese medicine. In this specific work, the authors used SPME coupled with reversed-phase HPLC, which significantly improved detection limit and selectivity.
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  • • 1+ votes

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  • Tuning of Redox Properties of Iron and Iron Oxides via Encapsulation within Carbon Nanotubes

    • W. Chen, X. Pan, X. Bao
      Original article citation: J. Am. Chem. Soc. 129," 7421 - 7426, (2007).

    • Categories: Chemistry and Materials
    • Recommended by : Gemma Moxham on 12/06/2007 04:41PM GMT
      
      There is great interest in the use of carbon nanotubes as templates for synthesis of other nanomaterials or as nanosized reaction vessels. Many studies have shown the benefits of using CNTs as a support for metal catalysts on the outer surface but few efforts have been made to carry out reactions on metals encapsulated within the nanotubes. Little is therefore known about the effects of confining chemical reactions in such a way. This paper reports the encapsulation of iron and iron-oxide particles within CNTs and investigates the interaction of the nanoparticles with the CNTs by Raman spectroscopy. The effect of these interactions on the reduction and oxidation reactions of the particles is investigated.
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  • Highly Efficient Au(I)-Catalyzed Intramolecular Addition of β-Ketoamide to Unactivated Alkenes

    • C.-Y. Zhou, C.-M. Che
      Original article citation: J. Am. Chem. Soc. 129," 5828 - 5829, (2007).

    • Categories: Chemistry
    • Recommended by : Gemma Moxham on 12/06/2007 04:12PM GMT
      
      The addition of C-H bonds across a C=C double bond is a valuable method of C-C bond formation. It has been shown that Au(I) and Au(III) complexes can catalyse addition of a beta-ketone to an alkene but only for electron rich alkenes. In this paper, Au(I) catalysts are shown to catalyse the addition of a beta-ketoamide to unactivated alkenes to aford highly substituted lactams with excellent yields and regioselectivities under mild reaction conditions.
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  • Reversible Surface Switching of Nanogel Triggered by External Stimuli

    • Xiaochen Shen, Leyang Zhang, Xiqun Jiang, Yong Hu, Jian Guo
      Original article citation: Angew. Chem. Int. Ed. 46," 7104 - 7107, (2007).

    • Categories: Chemistry and Materials
    • Recommended by : Gemma Moxham on 11/21/2007 11:38AM GMT
      
      Many organisms are able to change the properties of their surface membrane proteins in response to a change in pH in order to overcome biological membrane barriers. It is highly desirable to mimic such behaviour synthetically for biomedical and pharmaceutical application, hence, a variety of stimuli-responsive polymeric systems have been developed. However, the alterations that occur on a change in pH usually involve a disassembly process result in a change in dimension. In this papar the preparation of a novel nanogel of two biocompatible components is described which has a fully reversible pH-dependent switch process. The particle integrity is maintained over the entire pH range and the nanogel structure better resembles the structures of most organisms than the usual block co-polymer assemblies.
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  • Recent temperature increase recorded in an ice core in the source region of Yangtze River

    • Kang Shichang, Zhang Yongjun, Qin Dahe, Ren Jiawen, Zhang Qianggong, Bjorn GRIGHOLM, Paul A. MAYEWSKI
      Original article citation: Chinese Science Bulletin 52," 825 - 831, (2007).

    • Categories: Earth & Environment, Space & astronomy, Ecology & Evolution, and Chemistry
    • Recommended by : Li Minghui on 11/18/2007 02:14AM GMT
      
      Yangtze River is a region with the greatest warming over the Tibetan Plateau. The paper gave an important information that the temperature is increasing suggesting an accelerated warming and a more sensitive response to global warming in the high elevation region.
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  • A Facile Method for Permanent and Functional Surface Modification of Poly(dimethylsiloxane)

    • Y. Wu, Y. Huang, H. Ma
      Original article citation: J. Am. Chem. Soc. 129," 7226 - 7227, (2007).

    • Categories: Biotechnology, Materials, Chemistry, and Clinical Medicine
    • Recommended by : Jeff Xi on 11/15/2007 01:12AM GMT
      
      This article demonstrated a novel strategy to realize the surface modification of PDMS, which rendered PDMS tunable surface properties, for example, from very hydrophilic to very hydrophobic.
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  • Structural and functional analysis of the anti-parallel strands in the lumenal loop of the major light-harvesting chlorophyll a/b complex of photosystem II (LHCIIb) by site-directed mutagenesis

    • C. Liu, Y. Zhang, D. Cao, Y. He, T. Kuang, C. Yang
      Original article citation: Journal of Biological Chemistry doi:10.1074/jbc.M705736200 (2007)

    • Categories: Chemistry and Physics
    • Recommended by : wei zeng on 11/01/2007 06:20AM GMT
      
      The light-harvesting chlorophyll (Chl) a/b binding protein of photosystem II (LHCIIb) fulfils multiple functions, such as light harvesting and energy dissipation under different illuminations. The crystal structure of LHCIIb at the near atomic resolution reveals an anti-parallel strands structure. This paper studies the structural and functional significances of this structure.
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  • Molecular mechanism for metal-independent production of hydroxyl radicals by hydrogen peroxide and halogenated quinones

    • B.-Z. Zhu, B. Kalyanaraman, G.-B. Jiang
      Original article citation: Proceedings of the National Academy of Sciences doi:10.1073/pnas.0704030104 (2007)

    • Categories: Chemistry, Earth & Environment, Materials, and Physics
    • Recommended by : wei zeng on 11/01/2007 06:07AM GMT
      
      The authors previously showed that hydroxyl radicals (HO•) can be produced by H2O2 and halogenated quinones independent of redox-active transition metal ions. In this paper, they described a possible molecular mechanism.
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