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Effects of N-heteroaromatic ligands on highly luminescent mononuclear copper(I)-halide complexes
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| Title: | Effects of N-heteroaromatic ligands on highly luminescent mononuclear copper(I)-halide complexes |
| Authors: | Ohara, Hiroki Browse this author | | Kobayashi, Atsushi Browse this author | | Kato, Masako Browse this author |
| Keywords: | Copper | | Mononuclear complexes | | Luminescence | | N-heteroaromatics |
| Issue Date: | Jul-2015 |
| Publisher: | Elsevier |
| Journal Title: | Comptes rendus chimie |
| Volume: | 18 |
| Issue: | 7 |
| Start Page: | 766 |
| End Page: | 775 |
| Publisher DOI: | 10.1016/j.crci.2015.03.003 |
| Abstract: | 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. |
| Rights: | © 2015. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ | | http://creativecommons.org/licenses/by-nc-nd/4.0/ |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/64170 |
| Appears in Collections: | 理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 加藤 昌子
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