Six new Europium (III) complexes with ternary and tetrakis structures - Eu(BID)₃(PHEN), Eu(MBID)₃(PHEN), [Eu(BID)₄]⁻N⁺(Et)₄, [Eu(MBID)₄]⁻N⁺(Et)₄, [Eu(BID)₄]⁻N⁺(Bu)₄, and [Eu(MBID)₄]⁻N⁺(Bu)₄ (BID – 2-benzoyl-1,3-indandionate, MBID - 2-(4-methylbenzoyl)-1,3-indandionate and PHEN – 1,10-phenantroline) are synthesized, characterized, and incorporated into poly-N-vinylcarbazole (PVK) and poly methyl methacrylate (PMMA) matrices. Complex structure shows significant effect on thermal properties and emission properties of complexes in solid-state. Used countercations (N⁺(Et)₄ or N⁺(Bu)₄) greatly affects complex solubility in solvents, absolute photoluminescence quantum yields and photoluminescence lifetimes in solid-state. Complexes exhibit red-light emission attributed to ⁵D₀→⁷F_J (J = 0–4) transitions of Eu³⁺ ion with moderate to high quantum yields (0.06–0.60), bi-exponential lifetimes and pure red-light CIE chromaticity coordinates (x = 0.670; y = 0.330) in solid-state. Incorporation of synthesized complexes in PVK matrices leads to significant emission intensity and quantum yield decrease.

However, doped PMMA films with synthesized complexes exhibit moderate PLQY (0.09–0.14) and longer lifetime values than in solid-state and could show potential application as polymer optical fibers or in OLED's and other devices.

六个新的铕（III）配合物的三元和四结构-铕（BID）₃（phen）的，铕（MBID）₃（phen）的，[铕（BID）₄ ] ^- ñ ⁺（ET）₄，[Eu（上MBID ）₄ ] ^- ñ ⁺（ET）₄，[铕（BID）₄ ] ^- ñ ⁺（BU）₄，和[Eu（上MBID）₄ ] ^- ñ ⁺（BU）₄合成，表征（BID-2-苯甲酰基-1,3-茚满酸酯，MBID-2-（4-甲基苯甲酰基）-1,3-茚满酸酯和PHEN-1,10-菲咯啉），并将其掺入聚N-乙烯基咔唑中（PVK）和聚甲基丙烯酸甲酯（PMMA）矩阵。配合物的结构对固态配合物的热性质和发射性质表现出显着的影响。用过的抗衡阳离子（N ⁺（Et）₄或N ⁺（Bu）₄）极大地影响溶剂中的复杂溶解度，绝对光致发光量子产率和固态光致发光寿命。配合物表现出的红光归因于⁵ D ₀ → ⁷ F _J（J = 0–4）固态时具有中等到高量子产率（0.06-0.60），双指数寿命和纯红光CIE色度坐标（x = 0.670; y = 0.330）的Eu ³⁺离子跃迁。将合成的配合物掺入PVK矩阵会导致显着的发射强度和量子产率的降低。

但是，掺有合成配合物的PMMA膜与固态相比，具有中等的PLQY（0.09–0.14）和更长的寿命值，并且可能显示出作为聚合物光纤或OLED和其他设备的潜在应用。