Effects of N-heteroaromatic ligands on highly luminescent mononuclear copper(I)-halide complexes

• Ohara, Hiroki

• Kobayashi, Atsushi

• Kato, Masako

抄録

A series of mononuclear Cu(I)-halide complexes, [CuX(PPh3)(2)(L)] (X= CI-, Br-, I-; PPh3 = triphenylphosphine; L = pyridine (py), isoquinoline (iq), 1,6-naphthyridine (nap)), were synthesized. The emission color of [CuX(PPh3)2(L)] varies from blue to red by changing the L ligands and the halide ions, and all the complexes exhibit high emission quantum yields (0.16-0.99) in the crystals. The emission studies revealed that the emissive states of [CuX(PPh3)(2)(L)] differ depending on the L ligand. Complexes [CuX(PPh3)(2)(py)] and [CuX(PPh3)2(nap)] mainly emit from the singlet metal-to-ligand charge transfer mixed with the halide-to-ligand charge transfer ((1)(M + X)LCT) state at room temperature. In contrast, emissions from [CuX(PPh3)(2)(iq)] at room temperature originate from both (3)(M + X)LCT and (3)pi pi* states. These results indicate that N-heterodomatic ligands play an important role in the emission properties of mononuclear Cu(I)-halide complexes. (C) 2015 Academie des sciences. Published by Elsevier Masson SAS. All rights reserved.

収録刊行物

• Comptes rendus chimie

  Comptes rendus chimie 18 (7), 766-775, 2015-07

  Elsevier

キーワード

• Copper
• Mononuclear complexes
• Luminescence
• N-heteroaromatics

詳細情報

• CRID: 1050845763949389952
• NII論文ID: 120005946852
• HANDLE: 2115/64170
• ISSN: 16310748
• 本文言語コード: en
• 資料種別: journal article
• データソース種別:
  • IRDB
  • CiNii Articles