ICCAS OpenIR
Single chain contraction and re-expansion of polystyrene sulfonate: A study on its re-entrant condensation at single molecular level
Jia, Pengxiang1; Zhao, Jiang1,2
2009-12-21
Source PublicationJOURNAL OF CHEMICAL PHYSICS
ISSN0021-9606
Volume131Issue:23
AbstractSingle chain conformation of a polyelectrolyte (polystyrene sulfonate, PSS(-)Na(+)) during its re-entrant condensation was studied by fluorescence correlation spectroscopy (FCS) with single molecule sensitivity. The contraction and re-expansion of PSS(-)Na(+) chain were observed with the addition of counterions of different valencies. The formation of aggregation and precipitation of PSS(-)Na(+) and its redissolution were observed in accordance with the chain contraction and re-expansion process for the PSS(-)Na(+) chain upon the addition of trivalent La(3+) ion. Chain contraction and re-expansion of the PSS(-)Na(+) chain were also observed with the addition of monovalent Cs(+) and divalent Ca(2+) ions, under which condition, the re-entrant condensation was not observed. The results demonstrate that the high sensitivity of FCS can really study single PSS(-)Na(+) chain under extremely dilute situation.
KeywordAggregation Dissolving Fluorescence Liquid Structure Polymer Electrolytes Polymer Solutions Precipitation
DOI10.1063/1.3276278
Indexed BySCI
Language英语
WOS IDWOS:000273036300003
PublisherAMER INST PHYSICS
Citation statistics
Cited Times:36[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/66442
Collection中国科学院化学研究所
Corresponding AuthorZhao, Jiang
Affiliation1.Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Joint Lab Polymer Sci & Mat, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Jia, Pengxiang,Zhao, Jiang. Single chain contraction and re-expansion of polystyrene sulfonate: A study on its re-entrant condensation at single molecular level[J]. JOURNAL OF CHEMICAL PHYSICS,2009,131(23).
APA Jia, Pengxiang,&Zhao, Jiang.(2009).Single chain contraction and re-expansion of polystyrene sulfonate: A study on its re-entrant condensation at single molecular level.JOURNAL OF CHEMICAL PHYSICS,131(23).
MLA Jia, Pengxiang,et al."Single chain contraction and re-expansion of polystyrene sulfonate: A study on its re-entrant condensation at single molecular level".JOURNAL OF CHEMICAL PHYSICS 131.23(2009).
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