1 Ocak 2022 Dergi makalesi Açık Erişim

Celiker, Tugba; Altinisik, Sinem; Vaitusionak, Aliaksei; Kostjuk, Sergei V.; Koyuncu, Sermet; Yagci, Yusuf

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{
  "@context": "https://schema.org/", 
  "@id": 260771, 
  "@type": "ScholarlyArticle", 
  "creator": [
    {
      "@type": "Person", 
      "affiliation": "Istanbul Tech Univ, Dept Chem, TR-34469 Istanbul, Turkey", 
      "name": "Celiker, Tugba"
    }, 
    {
      "@type": "Person", 
      "affiliation": "Canakkale Onsekiz Mart Univ, Dept Chem Engn, TR-17100 Canakkale, Turkey", 
      "name": "Altinisik, Sinem"
    }, 
    {
      "@type": "Person", 
      "affiliation": "Belarusian State Univ, Dept Chem, Minsk 220006, BELARUS", 
      "name": "Vaitusionak, Aliaksei"
    }, 
    {
      "@type": "Person", 
      "name": "Kostjuk, Sergei V."
    }, 
    {
      "@type": "Person", 
      "affiliation": "Canakkale Onsekiz Mart Univ, Dept Chem Engn, TR-17100 Canakkale, Turkey", 
      "name": "Koyuncu, Sermet"
    }, 
    {
      "@type": "Person", 
      "affiliation": "Istanbul Tech Univ, Dept Chem, TR-34469 Istanbul, Turkey", 
      "name": "Yagci, Yusuf"
    }
  ], 
  "datePublished": "2022-01-01", 
  "description": "Photoinduced radical and step-growth polymerizations of carbazole functional styrene (vinyl phenyl carbazole, VPC) by sequential and one-pot strategies have been investigated. The obtained polymers were characterized by FTIR, H-1-NMR, GPC, UV-Vis, PL, CV, and BET analyses. The theoretical charge distribution and HOMO-LUMO calculation by DFT were well-matched with those obtained from optical and electrochemical measurements. In the sequential approach, visible light-induced free-radical photopolymerization of VPC by using bisacyl phosphineoxide results in the formation of linear polymers with side-chain carbazole moieties. The resulting polymers exhibit a smooth surface as a consequence of decreasing crystallinity. As evidenced by TEM analysis, the subsequent photoiniated step-growth polymerization of the carbazole groups by using diphenyliodonium hexafluorophosphate (DPI) yields hyperbranched and cross-linked polymers with the microspheres on the surface. In the one-pot approach, concomitant photoinitiated free-radical and step-growth polymerizations by using DPI results in the formation of cross-linked polymers with dispersed distribution. The total nitrogen uptake of VPC-based polymers by using Brunauer-Emmett-Teller (BET) surface area was found to be between about 150 and 190 m(2)/g at 77 K.", 
  "headline": "Sequential and Simultaneous Photoinduced Radical and Step- Growth Polymerizations of Carbazole Functional Styrene", 
  "identifier": 260771, 
  "image": "https://aperta.ulakbim.gov.tr/static/img/logo/aperta_logo_with_icon.svg", 
  "license": "http://www.opendefinition.org/licenses/cc-by", 
  "name": "Sequential and Simultaneous Photoinduced Radical and Step- Growth Polymerizations of Carbazole Functional Styrene", 
  "url": "https://aperta.ulakbim.gov.tr/record/260771"
}