title: Metal Coordination Stoichiometry Controlled Formation of Linear and Hyperbranched Supramolecular Polymers.
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.
authors.affiliation: College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, 310036, P. R. China.
authors.forename: Cuiling
authors.initials: C
authors.lastname: Lin
authors.affiliation: College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, 310036, P. R. China.
authors.forename: Luonan
authors.initials: L
authors.lastname: Xu
authors.affiliation: College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, 310036, P. R. China.
authors.forename: Libo
authors.initials: L
authors.lastname: Huang
authors.affiliation: College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, 310036, P. R. China.
authors.forename: Jia
authors.initials: J
authors.lastname: Chen
authors.affiliation: College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, 310036, P. R. China.
authors.forename: Yuanyuan
authors.initials: Y
authors.lastname: Liu
authors.affiliation: College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, 310036, P. R. China.
authors.forename: Yifan
authors.initials: Y
authors.lastname: Ma
authors.affiliation: College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, 310036, P. R. China.
authors.forename: Feixiang
authors.initials: F
authors.lastname: Ye
authors.affiliation: College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, 310036, P. R. China.
authors.forename: Huayu
authors.initials: H
authors.lastname: Qiu
authors.affiliation: College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, 310036, P. R. China. hetian123@aliyun.com.
authors.forename: Tian
authors.initials: T
authors.lastname: He
authors.affiliation: College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, 310036, P. R. China. yinsc@hznu.edu.cn.
authors.forename: Shouchun
authors.initials: S
authors.lastname: Yin
mesh_terms: D005063:Europium / Q000737:chemistry*; D046911:Macromolecular Substances / Q000138:chemical synthesis / Q000737:chemistry; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000138:chemical synthesis* / Q000737:chemistry; D011108:Polymers / Q000138:chemical synthesis* / Q000737:chemistry; D013237:Stereoisomerism; D015032:Zinc / Q000737:chemistry*
chemical_list: D046911:Macromolecular Substances; D009942:Organometallic Compounds; D011108:Polymers; D005063:Europium; D015032:Zinc
keywords: host-guest interactions; hyperbranched supramolecular polymers; metal-ligand interactions; self-assembly; supramolecular polymers