Calcium;magnesium;sodium;phosphate

• 分子结构分类: 无机化合物 - 混合金属/非金属化合物 - 碱土金属氧阴离子化合物
• 英文名称: Calcium;magnesium;sodium;phosphate
• 化学式: 9Ca*Mg*Na*7O₄P
• 分子量: 1072.8
• InChiKey: OIBDMJFLVFSCDS-UHFFFAOYSA-K

计算性质

• 辛醇/水分配系数(LogP)：
  -6.58
• 重原子数：
  8
• 可旋转键数：
  0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  86.2
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为产物：
  描述：

  magnesium pyrophosphate 、 玻璃纤维;纤维玻璃 在 CaCO₃ 作用下， 以 melt 为溶剂， 生成 Calcium;magnesium;sodium;phosphate
  参考文献：
  名称：

  Gmelin Handbuch der Anorganischen Chemie, Gmelin Handbook: Ca: MVol.B3, 318, page 1381 - 1384

  摘要：

  DOI：

文献信息

• Crystal structure and luminescence properties of Na2MMg(PO4)2:Eu2+ (M = Ca/Sr/Ba) phosphors
  作者：Huiling Zhang、Dengwen Yuan、Xiaoyun Mi、Xiyan Zhang、Zhaohui Bai、Xiuling Liu、Jun Lin

  DOI：10.1016/j.jallcom.2019.05.178

  日期：2019.8

  Abstract A series of Na2MMg(PO4)2:Eu2+ (M = Ca/Sr/Ba) phosphors were synthesized by the high-temperature solid-state reaction. X-ray diffraction (XRD), photoluminescence (PL) and GSAS structural refinement were used to characterize the samples. Rietveld refinements of powder X-ray diffraction patterns of Na2MMg(PO4)2 confirm that the structure of Na2MMg(PO4)2 consist of stacking along the [001] direction

  摘要 通过高温固相反应合成了一系列Na2MMg(PO4)2:Eu2+ (M = Ca/Sr/Ba) 荧光粉。X 射线衍射 (XRD)、光致发光 (PL) 和 GSAS 结构精修用于表征样品。Na2MMg(PO4)2 粉末 X 射线衍射图的 Rietveld 精修证实 Na2MMg(PO4)2 的结构由沿 [001] 方向的堆积组成。M2+ 阳离子位于层间空间内，而 Na+ 位于与层有界的大量空穴中。在 350 nm 激发后，由于 Eu2+ 的 4f65d1→4f7 跃迁，磷光体表现出在约 392 nm 处达到峰值的不对称宽带发射。根据Eu2+浓度猝灭机制，发现能量转移主要通过电偶极-偶极相互作用发生。而且，当 Ca2+ 位点被 Sr2+ 或 Ba2+ 取代时，Eu2+ 发射带最初移至较长波长，然后返回较短波长。特别是在 500 K 时仍有 89.5% 的室温发射强度，表明具有良好的热稳定性
• Identification of the crystallographic sites of Eu2+ in Ca9NaMg(PO4)7: structure and luminescence properties study
  作者：Zhiguo Xia、Haikun Liu、Xia Li、Chengying Liu

  DOI：10.1039/c3dt52232f

  日期：——

  The substituted activator ions Eu2+ in the β-Ca3(PO4)2-type structure, Ca9NaMg(PO4)7 compound, have been studied as emission centers, as well as structural probes. The crystal structure and crystallographic sites of Eu2+ in Ca9NaMg(PO4)7 have been identified by Rietveld refinements, electron paramagnetic resonance (EPR) spectroscopy analysis and combined photoluminescence spectral analysis, respectively. Ca9NaMg(PO4)7:Eu2+ phosphor exhibits a broad emission band in the visible light region with three distinguished peaks centered at 415, 458, and 615 nm, which are ascribed to different Eu2+ emission centers occupied in three different Ca crystallographic sites. The concentration quenching behavior, variation in lifetimes and the temperature dependent luminescence properties have been investigated as a function of different emission centers, 415, 458, and 625 nm for Ca9NaMg(PO4)7:Eu2+ phosphor. Accordingly, the relationship among three different Eu2+ luminescence centers originating from three different Ca2+ crystallographic sites has been found and verified.

  研究人员将 β-Ca3(PO4)2 型结构 Ca9NaMg(PO4)7 化合物中的取代活化离子 Eu2+ 作为发射中心和结构探针。通过里特维尔德细化、电子顺磁共振（EPR）光谱分析和联合光致发光光谱分析，分别确定了 Ca9NaMg(PO4)7 中 Eu2+ 的晶体结构和晶体学位点。Ca9NaMg(PO4)7:Eu2+ 荧光粉在可见光区域显示出宽广的发射带，在 415、458 和 615 纳米波长处有三个不同的峰值，这三个峰值分别归因于三个不同的 Ca 晶体学位点上占据的不同 Eu2+ 发射中心。我们研究了 Ca9NaMg(PO4)7:Eu2+ 荧光粉的浓度淬灭行为、寿命变化以及与温度相关的发光特性，并将其作为不同发射中心（415、458 和 625 nm）的函数。因此，发现并验证了源自三个不同 Ca2+ 晶体学位点的三个不同 Eu2+ 发光中心之间的关系。
• �ber die Isotypie zwischen Phosphaten der allgemeinen Zusammensetzung MeLi[PO4] und den Silikaten der Olivin-Monticellit-Reihe
  作者：Erich Thilo

  DOI：10.1007/bf01481845

  日期：1941.4
• Lazoryak, B. I.; Khoina, S. V.; Golubev, V. N., Russian Journal of Inorganic Chemistry, 1990, vol. 35, p. 777 - 780
  作者：Lazoryak, B. I.、Khoina, S. V.、Golubev, V. N.、Aziev, R. G.

  DOI：——

  日期：——
• Tunable-Color Luminescence via Energy Transfer in NaCa_13/18Mg_5/18PO₄:A (A = Eu²⁺/Tb³⁺/Mn²⁺, Dy³⁺) Phosphors for Solid State Lighting
  作者：Kai Li、Jian Fan、Xiaoyun Mi、Yang Zhang、Hongzhou Lian、Mengmeng Shang、Jun Lin

  DOI：10.1021/ic502058r

  日期：2014.11.17

  A series of NaCa13/Mg-18(5)/18PO4(NCMPO):A (A = Eu2+/Tb3+/Mn2+, Dy3+) phosphors have been prepared by the high-temperature solid-state reaction method. The X-ray diffraction (XRD) and Rietveld refinement, X-ray photoelectron spectroscopy (XPS), photoluminescence (PL), cathodoluminescence (CL), decay lifetimes, and PL quantum yields (QYs) were utilized to characterize the phosphors. The pure crystalline phase of as-prepared samples has been demonstrated via XRD measurement and Rietveld refinements. XPS reveals that the Eu2+/Tb3+/Mn2+ can be efficiently doped into the crystal lattice. NCMPO:Eu2+/Tb3+/Mn2+ phosphors can be effectively excited under UV radiation, which show tunable color from purple-blue to red including white emission based on energy transfer from Eu2+ to Tb3+/Mn2+ ions. Under low-voltage electron beam bombardment, the NCMPO:A (A = Eu2+/Tb3+/Mn2+, Dy3+) display their, respectively, characteristic emissions with different colors, and the CL spectrum of NCMPO:0.04Tb(3+) has the comparable intensity to the ZnO:Zn commercial product. In addition, the calculated CIE coordinate of NCMPO:0.04Tb(3+) (0.252, 0.432) is more saturated than it (0.195, 0.417). These results reveal that NCMPO:A (A = Eu2+/Tb3+/Mn2+, Dy3+) may be potential candidate phosphors for WLEDs and FEDs.