Chemistry Letters
Online ISSN : 1348-0715
Print ISSN : 0366-7022
ISSN-L : 0366-7022
Volume 44 , Issue 7
Showing 1-50 articles out of 55 articles from the selected issue
Highlight Review
  • Koji Hirano, Masahiro Miura
    2015 Volume 44 Issue 7 Pages 868-873
    Published: July 05, 2015
    Released: July 05, 2015
    [Advance publication] Released: April 25, 2015
    JOURNALS FREE ACCESS
    Copper salts and complexes have recently received significant attention as less expensive, abundant, and unique alternatives to noble transition-metal catalysts such as palladium, rhodium, and ruthenium, in the research field of C–H activation. This highlight review focuses on recent advances in copper-mediated biaryl coupling via aromatic C–H cleavage, and the scope and limitations are briefly summarized.
     
  • Yifan Si, Zhiguang Guo
    2015 Volume 44 Issue 7 Pages 874-883
    Published: July 05, 2015
    Released: July 05, 2015
    [Advance publication] Released: April 09, 2015
    JOURNALS FREE ACCESS
    With industrial development and population expansion, the problem of water pollution has intensified. The purification of oily water, especially oil–water emulsions, is one of the important topics of environment protection. Traditional filter membranes, to some extent, are useful for the separations of oil–water mixtures but suffer from many limitations and there is no effective way to achieve emulsified oil–water separation. Superwetting materials, based on bionics, have opened a brand-new door to membrane separation techniques. The rise and maturation of nanometer-scale materials also injects new vigor into this research area. In this paper, we review the contributions to oil–water emulsion separation in recent literatures. The principles of superwetting materials in separation of oil–water mixtures have been briefly stated at first. Some classical and latest examples, as well as some great work by our group, have been emphasized. Section 3 is the key point of this article. It covers the most valuable of recent progresses in advanced materials for oil–water emulsion separation, from novel polymer membranes to nanomaterial-based membranes. Of course, special-wettability materials and non-two-dimensional separation methods have also been instructive. The aim of the optimal design of superwetting membranes is to make future researches theoretical, instructive, and practical. Finally, some challenges and the potential promising breakthroughs in this field are also succinctly highlighted.
    Recent progress of oil–water emulsion separation with superwetting materials in separation principle, advanced materials and optimal design are mainly reviewed and some challenges, potential promising breakthroughs are also succinctly highlighted in this field. Fullsize Image
     
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