| Autor: |
Hai-Bing, Xu, Jie, Wang, Xue-Li, Chen, Peng, Xu, Kang-Tai, Xiong, Dao-Bin, Guan, Jian-Guo, Deng, Zhi-Hua, Deng, Mohamedally, Kurmoo, Ming-Hua, Zeng |
| Rok vydání: |
2018 |
| Zdroj: |
Dalton transactions (Cambridge, England : 2003). 47(20) |
| ISSN: |
1477-9234 |
| 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 SmSm 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 ππ 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 |
| Externí odkaz: |
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