Synthesis, Structure, and Photophysical Properties of Yellow-Green and Blue Photoluminescent Dinuclear and Octanuclear Copper(I) Iodide Complexes with a Disilanylene-Bridged Bispyridine Ligand
The synthesis, structural, and photophysical investigations of CuI complexes with a disilanylene-bridged bispyridine ligand <b>1</b> are herein presented. Dinuclear (<b>2</b>) and ladder-like (<b>3</b>) octanuclear copper(I) complexes were straightforwardly prepar...
Guardado en:
| Autores principales: | , , , , |
|---|---|
| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
MDPI AG
2021
|
| Materias: | |
| Acceso en línea: | https://doaj.org/article/d932eed022af4947bfe761372f46fdda |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| Sumario: | The synthesis, structural, and photophysical investigations of CuI complexes with a disilanylene-bridged bispyridine ligand <b>1</b> are herein presented. Dinuclear (<b>2</b>) and ladder-like (<b>3</b>) octanuclear copper(I) complexes were straightforwardly prepared by exactly controlling the ratio of CuI/ligand <b>1</b>. Single-crystal X-ray analysis confirmed that dinuclear complex <b>2</b> had no apparent π…π stacking whereas octanuclear complex <b>3</b> had π…π stacking in the crystal packing. In the solid state, the complexes display yellow-green (<i>λ</i><sub>em</sub> = 519 nm, <i>Φ</i> = 0.60, <i>τ</i> = 11 µs, <b>2</b>) and blue (<i>λ</i><sub>em</sub> = 478 nm, <i>Φ</i> = 0.04, <i>τ</i> = 2.6 µs, <b>3</b>) phosphorescence, respectively. The density functional theory calculations validate the differences in their optical properties. The difference in the luminescence efficiency between <b>2</b> and <b>3</b> is attributed to the presence of π…π stacking and the different luminescence processes. |
|---|