1 Ocak 2003 Dergi makalesi Açık Erişim

Turksoy, F; Hughes, G; Batsanov, AS; Bryce, MR

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{
  "@context": "https://schema.org/", 
  "@id": 95503, 
  "@type": "ScholarlyArticle", 
  "creator": [
    {
      "@type": "Person", 
      "name": "Turksoy, F"
    }, 
    {
      "@type": "Person", 
      "name": "Hughes, G"
    }, 
    {
      "@type": "Person", 
      "name": "Batsanov, AS"
    }, 
    {
      "@type": "Person", 
      "name": "Bryce, MR"
    }
  ], 
  "datePublished": "2003-01-01", 
  "description": "Phenylene-2,5-dimethylpyrazinyl co-oligomers and a dipyridylpyrazine derivative have been synthesised by Suzuki cross-coupling reactions starting from 2,5-dibromo-3,6-dimethylpyrazine. X-Ray crystal structures are reported for two teraryl derivatives, viz. 2,5-bis(2-methoxyphenyl)-3,6-dimethylpyrazine 2 and 2,5-bis(6-methoxypyridin-3-yl)-3,6-dimethylpyrazine 6, and a diprotonated pyrazinyl dication salt, viz. 2,5-bis(2-methoxyphenyl)-3,6-dimethylpyrazinium bis(tetrafluoroborate) salt 3. Compounds 2 and 6 and the dication in 3 have crystallographic C-i symmetry and adopt twisted conformations: dihedral angles between the aryl and pyrazine rings are 74.0degrees (2), 56.4degrees (3) and 44.6degrees (6). Violet-blue photoluminescence is seen for 2 lambda(max) 372 nm, 5 lambda(max) 418 nm and 6 lambda(max) 387 nm in ethanol solution. [Compound 5 is 1,4-dimethoxy-2,5-bis{2-(5-tertbutylphenyl-3,6-dimethylpyrazinyl)benzene}]. Blue electroluminescence, lambda(max) 444 nm, is observed for the device structure ITO/PEDOT/5/Ca with no long-wavelength emission from pi-aggregates or exciton states.", 
  "headline": "Phenylene-2,5-dimethylpyrazine co-oligomers: synthesis by Suzuki couplings, X-ray structures of neutral and diprotonated teraryl species and efficient blue emission", 
  "identifier": 95503, 
  "image": "https://aperta.ulakbim.gov.tr/static/img/logo/aperta_logo_with_icon.svg", 
  "license": "http://www.opendefinition.org/licenses/cc-by", 
  "name": "Phenylene-2,5-dimethylpyrazine co-oligomers: synthesis by Suzuki couplings, X-ray structures of neutral and diprotonated teraryl species and efficient blue emission", 
  "url": "https://aperta.ulakbim.gov.tr/record/95503"
}