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

Authors Fu, Heidi Li Ki
Po, Charlotte
He, Hexiang HKUST affiliated (currently or previously)
Leung, Sammual Yu Lut
Wong, Kam Sing View this author's profile
Yam, Vivian Wing-Wah
Issue Date 2016
Source Chemistry - A European Journal , v. 22, (33), August 2016, p. 11826-11836
Summary 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 Pt⋅⋅⋅Pt and π–π 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. © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
ISSN 0947-6539
Language English
Format Article
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