Luminescent Coordination Glass: Remarkable Morphological Strategy for Assembled Eu(III) Complexes
Luminescent Coordination Glass: Remarkable Morphological Strategy for Assembled Eu(III) Complexes
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DOI：
10.1021/acs.inorgchem.5b00145
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发表时间：
2015-05-04
影响因子：
4.6
通讯作者：
Hasegawa, Yasuchika
中科院分区：
文献类型：
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作者：
Hirai, Yuichi;Nakanishi, Takayuki;Hasegawa, Yasuchika
报道了新型发光Eu(III)配位玻璃1 ([Eu(hfa)(3)(o-dpeb)](2))、2([Eu(hfa)(3)(m-dpeb)](3))和3([Eu(hfa)(3)(p-dpeb)](n))的合成。它们由 Eu(III) 离子、六氟乙酰丙酮 (hfa) 配体和带有乙炔基的独特弯角氧化膦（o-、m-、p-dpeb）配体组成。它们的配位结构和玻璃成型性取决于内部苯核的取代区域化学。单晶X射线分析和DFT计算分别揭示了Eu(III)配位玻璃1、2和3的双核、三核和聚合物结构。这些化合物表现出特有的玻璃化转变（T-g = 25-96 摄氏度）和强发光特性（phi(Ln) = 72-94%）。
Syntheses of novel luminescent Eu(III) coordination glasses 1 ([Eu(hfa)(3)(o-dpeb)](2)), 2 ([Eu(hfa)(3)(m-dpeb)](3)), and 3 ([Eu(hfa)(3)(p-dpeb)](n)) are reported. They are composed of Eu(III) ions, hexafluoroacetylacetonato (hfa) ligands, and unique bent-angled phosphine oxide (o-, m-, p-dpeb) ligands with ethynyl groups. Their coordination structures and glass formability are dependent on the regiochemistry of substitution in regard to the internal benzene core. Single-crystal X-ray analyses and DFT calculation reveals dinuclear, trinuclear, and polymer structures for Eu(III) coordination glasses 1, 2, and 3, respectively. Those compounds show characteristic glass-transition (T-g = 25-96 degrees C) and strong luminescence properties (phi(Ln) = 72-94%).