高核镧系-钛氧簇作为具有高量子产率的发光分子温度计
High-Nuclearity Lanthanide-Titanium Oxo Clusters as Luminescent Molecular Thermometers with High Quantum Yields.
作者信息
Lu Dong-Fei, Hong Zi-Feng, Xie Jing, Kong Xiang-Jian, Long La-Sheng, Zheng Lan-Sun
机构信息
Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Physical Chemistry of Solid Surface, and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University , Xiamen 361005, China.
出版信息
Inorg Chem. 2017 Oct 16;56(20):12186-12192. doi: 10.1021/acs.inorgchem.7b01522. Epub 2017 Sep 28.
Three heterometallic lanthanide-titanium oxo clusters (LnTOCs) formulated as EuTi(μ-O)(tbba)(acac) (EuTi, 1, Hacac = acetylacetone), EuTi(μ-O)(tbba)(Htbba)(THF) (EuTi, 2), and EuTi(μ-O)(Ac)(tbba)(HO)(THF)(Htbba) (EuTi, 3) were prepared through the reactions of 4-tert-butylbenzoate (Htbba), rare-earth salts, and Ti(OPr). The solution luminescence investigation discovered a size-dependent quantum yield phenomenon in solution. A solid-state luminescence study showed that these three LnTOCs display temperature-dependent photoluminescent properties. Interestingly, the EuTi cluster exhibited the highest quantum yield of 94.9% in the solid state among the reported 3d-4f clusters.
通过4-叔丁基苯甲酸（Htbba）、稀土盐和Ti(OPr)的反应，制备了三种异金属镧系-钛氧簇（LnTOCs），其化学式分别为EuTi(μ-O)(tbba)(acac)（EuTi，1，Hacac = 乙酰丙酮）、EuTi(μ-O)(tbba)(Htbba)(THF)（EuTi，2）和EuTi(μ-O)(Ac)(tbba)(HO)(THF)(Htbba)（EuTi，3）。溶液发光研究发现了溶液中量子产率的尺寸依赖性现象。固态发光研究表明，这三种LnTOCs表现出温度依赖性的光致发光特性。有趣的是，在已报道的3d-4f簇中，EuTi簇在固态下表现出最高的量子产率，为94.9%。
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