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Fluorescence quenching between strong pi-electron donor-acceptors of carbazolocarbazole and tetranitrofluorenone leading to electron transfer

Icli, S; Icil, H; Whitten, DG; Sayil, C; Dityapak, I


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  <dc:creator>Icli, S</dc:creator>
  <dc:creator>Icil, H</dc:creator>
  <dc:creator>Whitten, DG</dc:creator>
  <dc:creator>Sayil, C</dc:creator>
  <dc:creator>Dityapak, I</dc:creator>
  <dc:date>1997-01-01</dc:date>
  <dc:description>Singlet energies and fluorescence quantum yields of synthesized dihydrocarbazolocarbazole, 1, dimethylcarbazolocarbazole, 2, dibenzylcarbazolocarbazole, 3, were measured to be between 76.5-74.3 kcal/mol and 0.07-0.02 respectively. A Stern-Volmer plot of fluorescence quenching of dihydrocarbazolocarbazole, 1, with 2,4,5,7-tetranitrofluorenone, 4, has given a rate constant of quenching of k(q) = 7.4 x 10(12) M(-1)s(-1). The free energies of the exothermic electron transfer reaction are calculated to be -33.6 kcal/mol for dihydrocarbazolocarbazole, 1, and -26.8 kcal/mol for dimethylcarbazolocarbazole, 2. High values for the rate of fluorescence quenching and the free energies are the evidence for an electron transfer process between these strong pi-electron donor-acceptor complexed molecules.</dc:description>
  <dc:identifier>https://aperta.ulakbim.gov.trrecord/103791</dc:identifier>
  <dc:identifier>oai:zenodo.org:103791</dc:identifier>
  <dc:rights>info:eu-repo/semantics/openAccess</dc:rights>
  <dc:rights>http://www.opendefinition.org/licenses/cc-by</dc:rights>
  <dc:source>JOURNAL OF LUMINESCENCE 75(4) 353-359</dc:source>
  <dc:title>Fluorescence quenching between strong pi-electron donor-acceptors of carbazolocarbazole and tetranitrofluorenone leading to electron transfer</dc:title>
  <dc:type>info:eu-repo/semantics/article</dc:type>
  <dc:type>publication-article</dc:type>
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