期刊
ACS MACRO LETTERS
卷 2, 期 10, 页码 906-911出版社
AMER CHEMICAL SOC
DOI: 10.1021/mz400410y
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资金
- Toyota Motor Co.
- [16750090]
The fast living polymerization of chiral arylisocyanide in the presence of the aromatic nucleophile adduct of tetra(t-butylisocyano)nickel(II) complex as an initiator gave the predominantly one-handed helical poly-isocyanide with narrow polydispersity. X-ray crystal structures of initiators and MALDI-TOF MS and NMR studies of the polymer products elucidated the key role of the aromatic substituents in the initiator and monomer achieving narrow polydispersity. The aromatic groups in the initiator and monomer stabilized the electronic structure of the carbene-like ligand to suppress dissociation of the active nickel complex that leads to chain transfer and termination. The aromatic groups also controlled the reactivity of the active site for initiation and propagation.
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