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    Incorporation of a Cationic Conjugated Polyelectrolyte CPE within an Aqueous Poly(vinyl alcohol) Sol

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    Publication date
    2016-11-16
    Author
    Knaapila, M.
    Stewart, Beverly
    Costa, T.
    Rogers, S.E.
    Pragana, J.
    Fonseca, S.M.
    Valente, A.J.M.
    Ramos, M.L.
    Murtinho, D.
    Costa Pereira, J.
    Mallavia, R.
    Burrows, H.D.
    Show allShow less
    Keyword
    Polymer-within-polymer
    Molecular dynamics
    PVA
    HTMA-PFP
    Peer-Reviewed
    Yes
    
    Metadata
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    Abstract
    We report on a multiscale polymer-within-polymer structure of the cationic conjugated polyelectrolyte poly{[9,9-bis(6′-N,N,N-trimethylammonium)hexyl]fluorene–phenylene} (HTMA-PFP) in aqueous poly(vinyl alcohol) (PVA) sol. Molecular dynamics simulations and small-angle neutron scattering (SANS) data show that HTMA-PFP forms aggregates in water but becomes entangled by PVA (with a 1:1 molar ratio of HTMA-PFP to PVA) and eventually immersed in PVA clusters (with the ratio 1:4). This is attributed to the hydrophobic–hydrophilic balance. Contrast variation data with regular and deuterated PVA support a rigid body model, where HTMA-PFP is confined as locally isolated, but closely located, chains within PVA clusters, which alter correlation distances within the system. These results are supported by enhanced photoluminescence (PL) and ionic conductivity which, together with a red-shift in UV/vis absorption spectra, indicate the breakup of HTMA-PFP aggregates upon PVA addition.
    URI
    http://hdl.handle.net/10454/17085
    Version
    No full-text in the repository
    Citation
    Knaapila M, Stewart B, Costa T et al (2016) Incorporation of a Cationic Conjugated Polyelectrolyte CPE within an Aqueous Poly(vinyl alcohol) Sol. Macromolecules. 49(23): 9119-9131.
    Link to publisher’s version
    https://doi.org/10.1021/acs.macromol.6b01895
    Type
    Article
    Collections
    Life Sciences Publications

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