Regulating structural dimensionality and emission colors by organic conjugation between SmIII at a fixed distance
| Autor: | Xue-Li Chen, Peng Xu, Kang-Tai Xiong, Jie Wang, Jianguo Deng, Zhi-Hua Deng, Dao-Bin Guan, Ming-Hua Zeng, Hai-Bing Xu, Mohamedally Kurmoo |
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| Rok vydání: | 2018 |
| Předmět: |
Alkane
chemistry.chemical_classification Materials science Ligand Electronic band 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Diphenylphosphine oxide 01 natural sciences Red Color 0104 chemical sciences Inorganic Chemistry Crystallography chemistry Ribbon White light 0210 nano-technology Curse of dimensionality |
| Zdroj: | Dalton Transactions. 47:6908-6916 |
| ISSN: | 1477-9234 1477-9226 |
| Popis: | The conjugation of bridging bis(diphenylphosphine oxide) alkane or arene ligands was found to control the structural dimensionality and the emission color of complexes from reactions with SmIII(hfac)3(H2O)2 (hfac− = hexafluoroacetylacetonato) while retaining the Sm⋯Sm distances. Bis(diphenylphosphine oxide)-1,4-butane (L1) affords a one-dimensional (1D) ribbon {Sm(hfac)3(L1)}∞ (1) that emits red color, while bis(diphenyl-phosphinoyl)-1,4-benzene (L2) results in a two-dimensional (2D) network {Sm(hfac)2(CF3COO)(L2)3}∞ (2) and near-white emission, but bis(diphenyl-phosphinoyl)-9,10-anthracene (L3) forms a zero-dimensional (0D) cyclic structure {Sm(hfac)3(L3)}2 (3) with strong π⋯π interactions that emit green color. Noticeably, the conjugation change is accompanied by a configurational change of coordination from trans for 1 and 2 to cis for 3. The color change is associated with the superposition of ligand and Sm based electronic band energies and their intensities. Such white light emission by a single compound having contributions from different building components is quite rare. |
| Databáze: | OpenAIRE |
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