The effect of delocalization on the exchange energy in meta- and para-linked Pt-containing carbazole polymers and monomers

Ning Zhang, Anna Hayer, Mohammed K. Al-Suti, Rayya A. Al-Belushi, Muhammad S. Khan, Anna Köhler

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Abstract

A series of novel platinum-containing carbazole monomers and polymers was synthesized and fully characterized by UV-VIS absorption, luminescence, and photoinduced absorption studies. In these compounds, a carbazole unit is incorporated into the main chain via either a. para- or a meta-linkage. We discuss the effects of linkage and polymerization on the energy levels of S 1, T11, and Tn. The S1-T1 splitting observed for the meta-linked monomer (0.4 eV) is only half of that in the para-linked monomer (0.8 eV). Upon polymerization, the exchange energy in the para-linked compound reduces, yet still remains larger than in the meta-linked polymer. We attribute the difference in exchange energy to the difference in wave function overlap between electron and hole in these

Original languageEnglish
Article number244701
JournalJournal of Chemical Physics
Volume124
Issue number24
DOIs
Publication statusPublished - 2006

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ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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