title: Stereospecific cyclic poly(methyl methacrylate) and its topology- guided hierarchically controlled supramolecular assemblies.
abstract: In this study, the stereocomplexation between a novel stereospecific cyclic vinyl polymer, that is, cyclic syndiotactic poly(methyl methacrylate) (st-PMMA), with the complementary linear isotactic (it-) PMMA was investigated. Surprising new insight into the effects of the topology (i.e., end groups), size, and tacticity of the assembling components on stereocomplex formation was obtained. Characterization of the stereocomplexes revealed that the self-assembly of cyclic st-PMMAs and linear it-PMMAs resulted in the formation of an unprecedented “polypseudorotaxane-type” supramolecular assembly. This stereocomplex exhibited remarkably different physical properties as compared to the conventional PMMA triple-helix stereocomplex as a result of the restricted topology imposed by the cyclic st-PMMA assembling component.
authors.forename: Jing Ming
authors.initials: JM
authors.lastname: Ren
authors.forename: Kotaro
authors.initials: K
authors.lastname: Satoh
authors.forename: Tor Kit
authors.initials: TK
authors.lastname: Goh
authors.forename: Anton
authors.initials: A
authors.lastname: Blencowe
authors.forename: Kanji
authors.initials: K
authors.lastname: Nagai
authors.forename: Kenji
authors.initials: K
authors.lastname: Ishitake
authors.forename: Andrew Joseph
authors.initials: AJ
authors.lastname: Christofferson
authors.forename: George
authors.initials: G
authors.lastname: Yiapanis
authors.forename: Irene
authors.initials: I
authors.lastname: Yarovsky
authors.forename: Masami
authors.initials: M
authors.lastname: Kamigaito
authors.forename: Greg Guanghua
authors.initials: GG
authors.lastname: Qiao
mesh_terms: D001386:Azides / Q000138:chemical synthesis / Q000737:chemistry*; D057930:Click Chemistry; D003500:Cyclization; D008958:Models, Molecular; D015394:Molecular Structure; D011083:Polycyclic Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D019904:Polymethyl Methacrylate / Q000138:chemical synthesis / Q000737:chemistry*; D013237:Stereoisomerism
chemical_list: D001386:Azides; D011083:Polycyclic Compounds; D019904:Polymethyl Methacrylate