title: POM-organic-POSS cocluster: creating a dumbbell-shaped hybrid molecule for programming hierarchical supramolecular nanostructures.
abstract: We report the construction of dumbbell-shaped hybrid molecules for programming their hierarchical supramolecular nanostructures through a synergetic self-assembly. Our first dumbbell-shaped hybrid molecule is a POM-organic-POSS cocluster produced by covalently coupling a POM cluster and a POSS cluster together through an organic tether. Structural analyses demonstrated a highly ordered lamellar morphology with a 4.9 nm periodicity, indicating a strong thermodynamic force driving a nanoscale phase separation of the POM and POSS blocks. The POM clusters were arranged in an orderly fashion within the POM-containing layer with a 1.38 nm periodicity because of fixed shape and size of the cluster. This investigation provides in-depth understanding of how to construct hierarchical supramolecular nanostructures at a nanoscale less than 5 nm by manipulating and controlling the topological shape of hybrid molecules.
authors.affiliation: Center for Synthetic Soft Materials, The Key Laboratory of Functional Polymer Materials of Ministry of Education and Institute of Polymer Chemistry, Nankai University, Tianjin, China.
authors.forename: Min-Biao
authors.initials: MB
authors.lastname: Hu
authors.forename: Zhan-Yao
authors.initials: ZY
authors.lastname: Hou
authors.forename: Wei-Qiong
authors.initials: WQ
authors.lastname: Hao
authors.forename: Yu
authors.initials: Y
authors.lastname: Xiao
authors.forename: Wei
authors.initials: W
authors.lastname: Yu
authors.forename: Chi
authors.initials: C
authors.lastname: Ma
authors.forename: Li-Jun
authors.initials: LJ
authors.lastname: Ren
authors.forename: Ping
authors.initials: P
authors.lastname: Zheng
authors.forename: Wei
authors.initials: W
authors.lastname: Wang
mesh_terms: D046911:Macromolecular Substances / Q000138:chemical synthesis / Q000737:chemistry; D008958:Models, Molecular; D015394:Molecular Structure; D049329:Nanostructures / Q000737:chemistry*; D017646:Organosilicon Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D010316:Particle Size; D013499:Surface Properties; D017973:Tungsten Compounds / Q000737:chemistry*; D000099294:Polyoxometalates
chemical_list: D046911:Macromolecular Substances; D017646:Organosilicon Compounds; D017973:Tungsten Compounds; C102296:polyoxometalate I; D000099294:Polyoxometalates