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Metal Coordination Stoichiometry Controlled Formation of Linear and Hyperbranched Supramolecular Polymers
Author(s) -
Lin Cuiling,
Xu Luonan,
Huang Libo,
Chen Jia,
Liu Yuanyuan,
Ma Yifan,
Ye Feixiang,
Qiu Huayu,
He Tian,
Yin Shouchun
Publication year - 2016
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.201600227
Subject(s) - supramolecular chemistry , supramolecular polymers , polymer , ligand (biochemistry) , metal , stoichiometry , metal ions in aqueous solution , materials science , polymer chemistry , pyridine , chemistry , molecule , organic chemistry , biochemistry , receptor , metallurgy , composite material
Controlling the topologies of polymers is a hot topic in polymer chemistry because the physical and/or chemical properties of polymers are determined (at least partially) by their topologies. This study exploits the host–guest interactions between dibenzo‐24‐crown‐8 and secondary ammonium salts and metal coordination interactions between 2,6‐bis(benzimidazolyl)‐pyridine units with metal ions (Zn II and/or Eu III ) as orthogonal non‐covalent interactions to prepare supramolecular polymers. By changing the ratios of the metal ion additives (Zn(NO 3 ) 2 and Eu(NO 3 ) 3 ) linkers to join the host–guest dimeric complex, the linear supramolecular polymers (100 mol% Zn(NO 3 ) 2 per ligand) and hyperbranched supramolecular polymers (97 mol% Zn(NO 3 ) 2 and 3 mol% Eu(NO 3 ) 3 per ligand) are separately and successfully constructed. This approach not only expands topological control over polymeric systems, but also paves the way for the functionalization of smart and adaptive materials.