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- W2331158064 abstract "When ether vapor was allowed to diffuse into a CH(2)Cl(2) solution of an enantiomer of a hexa-peri-hexabenzocoronene (HBC) derivative carrying a chiral (BINAP)Pt(II)-appended coordination metallacycle (HBC(Py)([(R)-Pt]) or HBC(Py)([(S)-Pt])), screw-sense-selective assembly took place to give optically active nanotubes (NT(Py)([(R)-Pt]) or NT(Py)([(S)-Pt])) with helical chirality, which were enriched in either left-handed (M)-NT(Py)([(R)-Pt]) or right-handed (P)-NT(Py)([(S)-Pt]), depending on the absolute configuration of the (BINAP)Pt(II) pendant. When MeOH was used instead of ether for the vapor-diffusion-induced assembly, nanocoils formed along with the nanotubes. As determined by scanning electron microscopy, the diastereomeric excess of the nanocoils was 60% (80:20 diastereomeric ratio). Removal of the (BINAP)Pt(II) pendants from NT(Py)([(R)-Pt]) or NT(Py)([(S)-Pt]) with ethylenediamine yielded metal-free nanotubes (NT(Py)) that remained optically active even upon heating without any change in the circular dichroism spectral profile. No helical inversion took place when NT(Py) derived from HBC(Py)([(R)-Pt]) or HBC(Py)([(S)-Pt]) was allowed to complex with (BINAP)Pt(II) with an absolute configuration opposite to the original one." @default.
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- W2331158064 date "2012-12-26" @default.
- W2331158064 modified "2023-09-30" @default.
- W2331158064 title "Dynamic or Nondynamic? Helical Trajectory in Hexabenzocoronene Nanotubes Biased by a Detachable Chiral Auxiliary" @default.
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- W2331158064 doi "https://doi.org/10.1021/ja311738m" @default.
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