Single-molecule imaging reveals topological isomer-dependent diffusion by 4-armed star and dicyclic 8-shaped polymers

Handle URI:
http://hdl.handle.net/10754/556249
Title:
Single-molecule imaging reveals topological isomer-dependent diffusion by 4-armed star and dicyclic 8-shaped polymers
Authors:
Habuchi, Satoshi ( 0000-0002-6663-2807 ) ; Fujiwara, Susumu; Yamamoto, Takuya; Tezuka, Yasuyuki
Abstract:
Diffusion dynamics of topological isomers of polymer molecules was investigated at the single-molecule level in a melt state by employing the fluorophore-incorporated 4-armed star and the corresponding doubly-cyclized, 8-shaped poly(THF) chains. While the single-molecule fluorescence imaging experiment revealed that the diffusion of the 4-armed star polymer was described by a single Gaussian distribution, the diffusion of the 8-shaped polymer exhibited a double Gaussian distribution behaviour. We reasoned that the two 8-shaped polymeric isomers have distinct diffusion modes in the melt state, although ensemble-averaged experimental methods cannot detect differences in overall conformational state of the isomers. The single-molecule experiments suggested that one of the 8-shaped polymeric isomer, having the horizontally oriented form, causes an efficient threading with the linear matrix chains which leads to the slower diffusion compared with the corresponding 4-armed star polymer, while the other 8-shaped polymeric isomer, having the vertically oriented form, displayed faster diffusion by the suppression of effective threading with the linear matrix chains due to its contracted chain conformation.
KAUST Department:
Biological and Environmental Sciences and Engineering (BESE) Division
Citation:
Single-molecule imaging reveals topological isomer-dependent diffusion by 4-armed star and dicyclic 8-shaped polymers 2015 Polym. Chem.
Journal:
Polym. Chem.
Issue Date:
21-Apr-2015
DOI:
10.1039/C5PY00534E
Type:
Article
ISSN:
1759-9954; 1759-9962
Additional Links:
http://pubs.rsc.org/en/Content/ArticleLanding/2015/PY/C5PY00534E
Appears in Collections:
Articles; Biological and Environmental Sciences and Engineering (BESE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorHabuchi, Satoshien
dc.contributor.authorFujiwara, Susumuen
dc.contributor.authorYamamoto, Takuyaen
dc.contributor.authorTezuka, Yasuyukien
dc.date.accessioned2015-06-04T11:04:55Zen
dc.date.available2015-06-04T11:04:55Zen
dc.date.issued2015-04-21en
dc.identifier.citationSingle-molecule imaging reveals topological isomer-dependent diffusion by 4-armed star and dicyclic 8-shaped polymers 2015 Polym. Chem.en
dc.identifier.issn1759-9954en
dc.identifier.issn1759-9962en
dc.identifier.doi10.1039/C5PY00534Een
dc.identifier.urihttp://hdl.handle.net/10754/556249en
dc.description.abstractDiffusion dynamics of topological isomers of polymer molecules was investigated at the single-molecule level in a melt state by employing the fluorophore-incorporated 4-armed star and the corresponding doubly-cyclized, 8-shaped poly(THF) chains. While the single-molecule fluorescence imaging experiment revealed that the diffusion of the 4-armed star polymer was described by a single Gaussian distribution, the diffusion of the 8-shaped polymer exhibited a double Gaussian distribution behaviour. We reasoned that the two 8-shaped polymeric isomers have distinct diffusion modes in the melt state, although ensemble-averaged experimental methods cannot detect differences in overall conformational state of the isomers. The single-molecule experiments suggested that one of the 8-shaped polymeric isomer, having the horizontally oriented form, causes an efficient threading with the linear matrix chains which leads to the slower diffusion compared with the corresponding 4-armed star polymer, while the other 8-shaped polymeric isomer, having the vertically oriented form, displayed faster diffusion by the suppression of effective threading with the linear matrix chains due to its contracted chain conformation.en
dc.relation.urlhttp://pubs.rsc.org/en/Content/ArticleLanding/2015/PY/C5PY00534Een
dc.rightsArchived with thanks to Polym. Chem. DOI: 10.1039/C5PY00534Een
dc.titleSingle-molecule imaging reveals topological isomer-dependent diffusion by 4-armed star and dicyclic 8-shaped polymersen
dc.typeArticleen
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Divisionen
dc.identifier.journalPolym. Chem.en
dc.eprint.versionPost-printen
dc.contributor.institutionDepartment of Organic and Polymeric Materials, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8552, Japanen
kaust.authorHabuchi, Satoshien
All Items in KAUST are protected by copyright, with all rights reserved, unless otherwise indicated.