1 Ocak 2022 Dergi makalesi Açık Erişim

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

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{
  "DOI": "10.1021/acs.macromol.2c01558", 
  "abstract": "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.", 
  "author": [
    {
      "family": "Celiker", 
      "given": " Tugba"
    }, 
    {
      "family": "Altinisik", 
      "given": " Sinem"
    }, 
    {
      "family": "Vaitusionak", 
      "given": " Aliaksei"
    }, 
    {
      "family": "Kostjuk", 
      "given": " Sergei V."
    }, 
    {
      "family": "Koyuncu", 
      "given": " Sermet"
    }, 
    {
      "family": "Yagci", 
      "given": " Yusuf"
    }
  ], 
  "container_title": "MACROMOLECULES", 
  "id": "260771", 
  "issued": {
    "date-parts": [
      [
        2022, 
        1, 
        1
      ]
    ]
  }, 
  "title": "Sequential and Simultaneous Photoinduced Radical and Step- Growth Polymerizations of Carbazole Functional Styrene", 
  "type": "article-journal"
}