Two new blue-phosphorescent Ir(III) cyclometalated complexes demonstrating the pushing-up effects of amino on levels of Pi-type molecular orbitals

Wei Ting Chen, Yi Jing Chen, Chun Sheng Wu, Jin Ju Lin, Wei Lin Su, Shu Hui Chen, Shao Pin Wang

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

Orbital interactions between nitrogen's 2p-orbital, 2p(N), and the higher-lying HOMO/LUMO would push-up the latter even higher. This destabilization effect exerted by an amino explains the high-lying LUMO of the 2,2′-dipyridyl amine (HDPA) ancillary ligand, as well as the high-lying LUMO in Ir(ppy)2HDPA+ (ppy = 2-phenylpyridine). The pi-destabilization effect on MOs exerted by a fluoro must be incorporated into consideration to explain the site-dependent characteristics observed by related color-tuning studies. Two new blue phosphorescent fluorinated Ir(ppy) 2HDPA+ complexes have been synthesized by introducing fluoro(s) at suitable phenyl-carbon(s): having small 2pπ(C) content in HOMO and/or large 2pπ(C) content in LUMO.

Original languageEnglish
Pages (from-to)225-229
Number of pages5
JournalInorganica Chimica Acta
Volume408
DOIs
Publication statusPublished - 2013

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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