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.
Publisher:
Royal Society of Chemistry (RSC)
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.publisherRoyal Society of Chemistry (RSC)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
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