A new 1D chain coordination polymer [Cd(dpq)(ox)0.5Cl]n (1) (dpq=dipyrido[3,2-d:2′,3′-f]quinoxaline and ox=oxalate) has been hydrothermally synthesized and structurally characterized by elemental analysis, IR and si...A new 1D chain coordination polymer [Cd(dpq)(ox)0.5Cl]n (1) (dpq=dipyrido[3,2-d:2′,3′-f]quinoxaline and ox=oxalate) has been hydrothermally synthesized and structurally characterized by elemental analysis, IR and single crystal X-ray diffraction analysis. Compound 1 (CdClC15H8N4O2): monoclinic, space group P21/c, a=0.854 04(5) nm, b=2.094 90(13) nm, c=0.839 22(5) nm, Z=4, V=1.438(15) nm3, Mr=424.11, Dc=1.959 g·cm-3, F(000)=828.0, μ= 1.719 mm-1, S=1.028, the final R=0.025 8 and wR=0.057 5. The crystal structure analysis indicates that the cadmium ion is coordinated by two oxygen atoms from a oxalate, two chelating nitrogen atoms from a dpq molecule and two Cl-anions. The adjacent Cd(Ⅱ) ions are linked by Cl-anions and oxalate ligands in alternate sequence to form a 1D chain coordination polymer and the adjacent chains are further connected by π-π stacking interactions to form a 2D supramolecular network. Moreover, the title compound exhibits blue emission in the solid state at room temperature.展开更多
分析了用金属有机物气相外延方法 (MOVPE)在蓝宝石衬底上生长的铟镓氮 (In Ga N)的光致发光 (PL)性质 .发现在 4.7K至 30 0 K范围内 ,随着温度升高 ,In Ga N带边辐射向低能方向移动 ,峰值变化基本符合 Varshni经验公式 ;同时 In Ga N发...分析了用金属有机物气相外延方法 (MOVPE)在蓝宝石衬底上生长的铟镓氮 (In Ga N)的光致发光 (PL)性质 .发现在 4.7K至 30 0 K范围内 ,随着温度升高 ,In Ga N带边辐射向低能方向移动 ,峰值变化基本符合 Varshni经验公式 ;同时 In Ga N发光强度虽有所衰减 ,但比 Ga N衰减程度小 ,分析了导致 Ga N和 In Ga N光致发光减弱的可能因素 .展开更多
文摘A new 1D chain coordination polymer [Cd(dpq)(ox)0.5Cl]n (1) (dpq=dipyrido[3,2-d:2′,3′-f]quinoxaline and ox=oxalate) has been hydrothermally synthesized and structurally characterized by elemental analysis, IR and single crystal X-ray diffraction analysis. Compound 1 (CdClC15H8N4O2): monoclinic, space group P21/c, a=0.854 04(5) nm, b=2.094 90(13) nm, c=0.839 22(5) nm, Z=4, V=1.438(15) nm3, Mr=424.11, Dc=1.959 g·cm-3, F(000)=828.0, μ= 1.719 mm-1, S=1.028, the final R=0.025 8 and wR=0.057 5. The crystal structure analysis indicates that the cadmium ion is coordinated by two oxygen atoms from a oxalate, two chelating nitrogen atoms from a dpq molecule and two Cl-anions. The adjacent Cd(Ⅱ) ions are linked by Cl-anions and oxalate ligands in alternate sequence to form a 1D chain coordination polymer and the adjacent chains are further connected by π-π stacking interactions to form a 2D supramolecular network. Moreover, the title compound exhibits blue emission in the solid state at room temperature.
文摘分析了用金属有机物气相外延方法 (MOVPE)在蓝宝石衬底上生长的铟镓氮 (In Ga N)的光致发光 (PL)性质 .发现在 4.7K至 30 0 K范围内 ,随着温度升高 ,In Ga N带边辐射向低能方向移动 ,峰值变化基本符合 Varshni经验公式 ;同时 In Ga N发光强度虽有所衰减 ,但比 Ga N衰减程度小 ,分析了导致 Ga N和 In Ga N光致发光减弱的可能因素 .
基金Supported by the National Natural Science Foundation of China(No.11304021)the Undergraduate Innovation and Entrepreneurship Training Program of Jilin Province(No.201611437001)~~
基金National Natural Science Foundation of China(61405159)Natural Science Foundation Research Project Key Projects of Shaanxi Province(2014JZ2-003)Natural Science Foundation of Shaanxi Province(2015JM6274)
