Ru(II) complexes containing dihydro-1,1,3,3-tetramethyl-7,8-diazacyclopenta[1]phenanthren-2-ol ligand: Synthesis and their electrochemiluminescent characteristics

Do Nam Lee, Hak Mook Kim, Eun Hwa Kim, Bong Kwan Soh, Chong Hyeak Kim, Byung Min Lee, Sook Hyun Yoon, Won Yong Lee, Byeong Hyo Kim

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Abstract

A series of new ruthenium(II) complexes containing dihydro-1,1,3,3-tetramethyl-7,8-diazacyclopenta[1]phenanthren-2-ol (DTDP-OH) ligand, such as [Ru(DTDP-OH)n(L)3-n]2+ (L = 2,2′-bipyridyl (bpy), o-phenanthroline (o-phen), 2,2′-bipyridine-4,4′-dicarboaldehyde (bpy-(CHO)2), 1,3-dihydro-1,1,3,3-tetramethyl-7,8-diazacyclopenta[1]phenanthren-2-one(DTDP), n = 1, 2, 3) were synthesized and their electrochemical and photophysical properties were studied. The synthesized Ru(II) complexes containing the DTDP-OH ligand showed strong MLCT absorptions at 420-487 nm. All the synthesized Ru(II) complexes containing the DTDP-OH ligand exhibited more intensive ECL emissions than the well-known [Ru(o-phen)3]2+ does. In particular, the ECL intensities of [Ru(DTDP-OH)2(o-phen)]2+ and [Ru(DTDP-OH)2(bpy-(CHO)2)]2+ were observed to be more than 2-fold greater than that of [Ru(o-phen)3]2+.

Original languageEnglish
Pages (from-to)885-892
Number of pages8
JournalSynthetic Metals
Volume156
Issue number11-13
DOIs
Publication statusPublished - 2006 Jun 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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