Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 58, Issue 34, Pages 11709-11714Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201905472
Keywords
helical structures; helicity inversion; morphology transformation; platinum; supramolecular nanostructures
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Funding
- NRF [2017R1A4A1014595, 2018R1A2B2003637]
- Next Generation BioGreen 21 Program (SSAC), Rural development Administration, Korea [PJ013186052019]
- Rural Development Administration (RDA), Republic of Korea [PJ013186052019] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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We demonstrated the morphology transformation of co-assemblies based on terpyridine-based ligands (1R and 1S) possessing R- or S-alanine analogues and their platinum(II) complex (2R-Pt and 2S-Pt). The right-handed helical ribbon of the co-assembly formed with 0.5 equivalents of 2R-Pt to 1R was converted into the left-handed helical ribbon with 0.6 equivalents of 2R-Pt. The left-handed helical ribbon structure of the co-assembly became a tubular structure in the presence of 0.8-1.0 equivalents of 2R-Pt. The morphology transformation via helical inversion at the supramolecular level was due to an orientation change of the amide groups caused by non-covalent Pt....Pt interactions between the terpyridine of 2R-Pt and that of 2R-Pt. This study provides insights into controlling the morphology of the transformation of helical ribbons into tubular structures through helicity inversion in co-assembled supramolecular nanostructures based on platinum(II) complexes.
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