Metal Coordination Stoichiometry Controlled Formation of Linear and Hyperbranched Supramolecular Polymers. Issue 17 (5th July 2016)

• Record Type: Journal Article
• Authors: Lin, Cuiling; Xu, Luonan; Huang, Libo; Chen, Jia; Liu, Yuanyuan; Ma, Yifan; Ye, Feixiang; Qiu, Huayu; He, Tian; Yin, Shouchun
• Is Part Of: Macromolecular rapid communications. Volume 37:Issue 17(2016)
• Page Start: 1453
• Page End: 1459
• Publication Date: 2016-07-05
• Subjects: host–guest interactions -- hyperbranched supramolecular polymers -- metal–ligand interactions -- self‐assembly -- supramolecular polymers; Macromolecules -- Periodicals; Polymers -- Periodicals; Chemistry -- Periodicals; 547.705
• DOI: 10.1002/marc.201600227
• Languages: English
• ISSNs: 1022-1336

Abstract

Abstract : 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(NO3 )2 and Eu(NO3 )3 ) linkers to join the host–guest dimeric complex, the linear supramolecular polymers (100 mol% Zn(NO3 )2 per ligand) and hyperbranched supramolecular polymers (97 mol% Zn(NO3 )2 and 3 mol% Eu(NO3 )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. Abstract : Linear and hyperbranched suparmolecular polymers are constructed by utilizing host–guest interactions and changing the metal coordination of BIP with different ratios of metal ions.