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    Photoresponsive nanostructured membranes

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    Name:
    anthracene-july13.pdf
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    3.109Mb
    Format:
    PDF
    Description:
    Accepted Manuscript
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    Type
    Article
    Authors
    Madhavan, Poornima cc
    Sutisna, Burhannudin cc
    Sougrat, Rachid cc
    Nunes, Suzana Pereira cc
    KAUST Department
    Biological and Environmental Sciences and Engineering (BESE) Division
    Chemical Engineering Program
    Electron Microscopy
    Environmental Science and Engineering Program
    Imaging and Characterization Core Lab
    Nanofabrication Core Lab
    Nanostructured Polymeric Membrane Lab
    Physical Science and Engineering (PSE) Division
    Date
    2016
    Permanent link to this record
    http://hdl.handle.net/10754/621448
    
    Metadata
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    Abstract
    The perspective of adding stimuli-response to isoporous membranes stimulates the development of separation devices with pores, which would open or close under control of environment chemical composition, temperature or exposure to light. Changes in pH and temperature have been previously investigated. In this work, we demonstrate for the first time the preparation of photoresponsive isoporous membranes, applying self-assembly non-solvent induced phase separation to a new light responsive block copolymer. First, we optimized the membrane formation by using poly(styrene-b-anthracene methyl methacrylate-b-methylmethacrylate) (PS-b-PAnMMA-b-PMMA) copolymer, identifying the most suitable solvent, copolymer block length, and other parameters. The obtained final triblock copolymer membrane morphologies were characterized using atomic force and electron microscopy. The microscopic analysis reveals that the PS-b-PAnMMA-b-PMMA copolymer can form both lamellar and ordered hexagonal nanoporous structures on the membrane top layer in appropriate solvent compositions. The nanostructured membrane emits fluorescence due to the presence of the anthracene mid-block. On irradiation of light the PS-b-PAnMMA-b-PMMA copolymer membranes has an additional stimuli response. The anthracene group undergoes conformational changes by forming [4 + 4] cycloadducts and this alters the membrane's water flux and solute retention. © 2016 The Royal Society of Chemistry.
    Citation
    Madhavan P, Sutisna B, Sougrat R, Nunes SP (2016) Photoresponsive nanostructured membranes. RSC Adv 6: 75594–75601. Available: http://dx.doi.org/10.1039/c6ra14317b.
    Sponsors
    King Abdullah University of Science and Technology[CRG2]
    Publisher
    Royal Society of Chemistry (RSC)
    Journal
    RSC Advances
    DOI
    10.1039/c6ra14317b
    ae974a485f413a2113503eed53cd6c53
    10.1039/c6ra14317b
    Scopus Count
    Collections
    Nanofabrication Core Lab; Articles; Biological and Environmental Science and Engineering (BESE) Division; Environmental Science and Engineering Program; Imaging and Characterization Core Lab; Physical Science and Engineering (PSE) Division; Chemical Engineering Program

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