1 Ocak 2014 Dergi makalesi Açık Erişim

Arslan, Huelya; Pfaff, Andre; Lu, Yan; Stepanek, Petr; Mueller, Axel H. E.

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        "name": "Arslan, Huelya"
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      {
        "affiliation": "Univ Bayreuth, D-95440 Bayreuth, Germany", 
        "name": "Pfaff, Andre"
      }, 
      {
        "affiliation": "Helmholtz Zentrum Berlin Mat & Energie GmbH, Soft Matter & Funct Mat, D-14109 Berlin, Germany", 
        "name": "Lu, Yan"
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      {
        "affiliation": "Acad Sci Czech Republ, Inst Macromol Chem, CR-16206 Prague, Czech Republic", 
        "name": "Stepanek, Petr"
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      {
        "name": "Mueller, Axel H. E."
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    "description": "Stimuli-responsive spherical brushes composed of 6-O-methacryloyl-1,2:3,4-di-O-isopropylidene-D-galactopyranose (MAIGal) and 2-(dimethylamino)ethyl methacrylate (DMAEMA) are prepared via atom transfer radical polymerization (ATRP) using cross-linked polystyrene nanoparticles covered with a thin layer of 2-(2-bromoisobutyryloxy)ethyl methacrylate (BIEM) as ATRP initiator by the grafting from approach. The stimuli-responsive behavior of the deprotected spherical PMAGal-b-PDMAEMA block copolymer brushes is investigated by dynamic light scattering and cryogenic transmission electron microscopy. A brush with arms containing 160 MAGal and 170 DMAEMA monomer units shows a significant contraction of the hydrodynamic radius from 20 to 70 degrees C at pH=8 with a cloud point at approximate to 40 degrees C, whereas no LCST is detected at pH=6 and 7 due to the protonation of the DMAEMA units. Aggregates occur at low temperatures and pH 8 due to intermolecular interactions between the chains of different brushes, which disappear above LCST, when the PDMAEMA chains fold back to the core of the brushes, exposing the glycopolymer chains to the outside.", 
    "doi": "10.1002/mabi.201300290", 
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      "issue": "1", 
      "pages": "81-91", 
      "title": "MACROMOLECULAR BIOSCIENCE", 
      "volume": "14"
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    "title": "Stimuli-Responsive Spherical Brushes Based on D-Galactopyranose and 2-(Dimethylamino)ethyl Methacrylate"
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