Tetra- and hexanuclear copper(I) iminothiolate complexes: synthesis, structures, and solid-state thermochromic dual emission in visible and near-infrared regions
| Autor: | Yuumi Sugata, Marino Mori, Toshikazu Ono, Masaaki Abe, Hidetoshi Kiyooka, Yoshiki Ozawa |
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| Rok vydání: | 2020 |
| Předmět: |
Diffraction
Thermochromism Materials science Photoluminescence General Chemical Engineering chemistry.chemical_element 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Biochemistry Copper Industrial and Manufacturing Engineering 0104 chemical sciences Ion Metal Crystallography chemistry visual_art Materials Chemistry Cluster (physics) visual_art.visual_art_medium 0210 nano-technology Visible spectrum |
| Zdroj: | Chemical Papers. 74:3717-3725 |
| ISSN: | 1336-9075 2585-7290 |
| Popis: | Two new photoluminescent multinuclear Cu(I) cluster complexes supported by monoanionic bidentate ligand N-methylbenzimidazolethiolate (Me-bimt–), [Cun(Me-bimt)n] with n = 4 (1) and 6 (2), have been synthesized and structurally characterized by single-crystal X-ray diffraction analysis. For 1 and 2, the Cu(I) ions and the Me-bimt– ligands construct a cubane-type {Cu4S4} and a hexagonal-prism {Cu6S6} frameworks, respectively. In the crystalline state, complexes 1 and 2 exhibit green (λem = 500 nm) and near-infrared (λem = 876 nm) emission, respectively, under UV irradiation (λex = 365 nm) at room temperature. Both crystals reveal temperature-dependent dual emission below 200 K: complex 1 emits in the visible wavelength region (λem = 493 and 542 nm) and complex 2 in the visible to near-infrared wavelength region (λem = 752 and 973 nm) which are attributed to multiple photoexcited states at the cluster frameworks with distinct metal nuclearity. |
| Databáze: | OpenAIRE |
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