Effect of alkyl chain length on the luminescence on-off mechanochromic behavior of solid-state Gold(I) isocyanide complexes
| Autor: | Yuxuan Hu, Xiaoyan Wang, Sheng Hua Liu, Jun Yin, Zhao Chen, Yu-Bao Dong, Lan Yang |
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| Rok vydání: | 2018 |
| Předmět: |
chemistry.chemical_classification
Mechanochromic luminescence Materials science Quenching (fluorescence) Photoluminescence 010405 organic chemistry Process Chemistry and Technology General Chemical Engineering Isocyanide Crystal structure 010402 general chemistry 01 natural sciences 0104 chemical sciences Crystallography chemistry.chemical_compound chemistry Proton NMR Luminescence Alkyl |
| Zdroj: | Dyes and Pigments. 150:315-322 |
| ISSN: | 0143-7208 |
| DOI: | 10.1016/j.dyepig.2017.12.030 |
| Popis: | Five phenylethyne(p-alkoxyphenyl isocyanide)gold(I) complexes with different alkyl chains (OR) in the para-position of the phenyl isocyanide have been successfully synthesized [where R = CH3 (5a), C2H5 (5b), C4H9 (5c), C6H13 (5d), and C10H21 (5e)] and structurally characterized by 1H NMR, 13C NMR, and HRMS. To our surprise, the as-prepared powders of these complexes exhibited different emission colors. The diversity of their mechanochromic luminescence properties has been investigated with photoluminescence spectroscopy, powder X-ray diffraction (XRD) analysis, and single-crystal XRD analysis. The results indicated the presence of weak intermolecular interactions in their crystal structures, and different alkyl chains had obvious impacts on their stacking arrangements and optical behavior. The luminescence quantum yield of 5c was as high as 49.3% in the solid state. Complexes 5a–5e each showed luminescence quenching after grinding. |
| Databáze: | OpenAIRE |
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