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- W4240093310 abstract "Abstract Although post‐functionalization is extensively used to introduce diverse functional groups into supramolecular polymers (SPs) in solution, post‐functionalization of SPs on surfaces still remains unexplored. Here we achieved the on‐surface post‐functionalization of two SPs derived from 5,10,15‐tri‐(4‐pyridyl)‐20‐bromophenyl porphyrin (Br‐TPyP) via cross‐coupling reactions on Au(111). The ladder‐shaped, Cu‐coordinated SPs preformed from Br‐TPyP were functionalized through Heck reaction with 4‐vinyl‐1,1′‐biphenyl. In the absence of Cu, Br‐TPyP formed chiral SPs as two enantiomers via self‐assembly, which were functionalized via divergent cross‐coupling reaction with 4‐isocyano‐1,1′‐biphenyl (ICBP). Surprisingly, this reaction was discovered as an enantioselective on‐surface reaction induced by the chirality of SPs. Mechanistic analysis and DFT calculations indicated that after debromination of Br‐TPyP and the first addition of ICBP, only one attack direction of ICBP to the chiral SP intermediate is permissive in the second addition step due to the steric hindrance, which guaranteed the high enantioselectivity of the reaction." @default.
- W4240093310 created "2022-05-12" @default.
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- W4240093310 date "2021-04-07" @default.
- W4240093310 modified "2023-09-28" @default.
- W4240093310 title "Post‐Functionalization of Supramolecular Polymers on Surface and the Chiral Assembly‐Induced Enantioselective Reaction" @default.
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- W4240093310 doi "https://doi.org/10.1002/ange.202016395" @default.
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