4.6 Article

Tuning of Supramolecular Architectures of L-Valine-Containing Dicyanoplatinum(II) 2,2′-Bipyridine Complexes by Metal-Metal, π-π Stacking, and Hydrogen-Bonding Interactions

期刊

CHEMISTRY-A EUROPEAN JOURNAL
卷 22, 期 33, 页码 11826-11836

出版社

WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201601983

关键词

bipyridine complexes; intermolecular interactions; L-valine; platinum; self-assembly

资金

  1. University of Hong Kong under the University Research Committee (URC) Strategic Research Theme on New Materials
  2. University Grants Committee Areas of Excellence (AoE) Scheme [AoE/P-03/08]
  3. Research Grants Council of Hong Kong Special Administrative Region, P. R. China [HKU 17304715]

向作者/读者索取更多资源

A series of newly synthesized dicyanoplatinum(II) 2,2'-bipyridine complexes exhibits self-assembly properties in solution after the incorporation of the L-valine amino units appended with various hydrophobic motifs. These L-valine-derived substituents were found to have critical control over the aggregation behaviors of the complexes in the solution state. On one hand, one of the complexes was found to exhibit interesting circularly polarized luminescence (CPL) signals at low temperature due to the formation of chiral spherical aggregates in the temperature-dependent studies. On the other hand, systematic transformation from less uniform aggregates to well-defined fibrous and rod-like structures via P center dot center dot center dot Pt and pi-pi stacking interactions has also been observed in the mixed-solvent studies. These changes were monitored by UV/Vis absorption, emission, circular dichroism (CD), and CPL spectroscopies, and morphologies were studied by electron microscopy.

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