Iodine-doped (C22H16N2SO2) was prepared by doping the dye with iodine vapor. The following characteristics were obtained by structure analysis.1. The doped iodine exists as I3-anion and I2.2. Because the electron loca...Iodine-doped (C22H16N2SO2) was prepared by doping the dye with iodine vapor. The following characteristics were obtained by structure analysis.1. The doped iodine exists as I3-anion and I2.2. Because the electron located on the sulphur atom was transferred to iodine, a charge transfer complx of (C22H16N2SO2I5) was formed.3. The complex was proved to exist in a quasi-one dimension conductor state, forming two ordered molecular stacks.4. From the volt-ampere curve with sandwich cell, the room temperature resistivity (ρ)and the exciting energe (ΔE) of the doped complex were shown to he 3.47×107Ω·cm-1and 0.4eV respectivily.5. Its electrical behavior obeys the fomula ρ = ρ0exp(ΔE/kt), showing the behavior of a typical semicanductor.展开更多
通过Knoevenagel缩合反应合成了探针分子1,探针分子1的结构用1 H NMR进行了表征。通过紫外-可见光谱及荧光光谱研究了探针分子1检测CN^(-)的能力,结果显示,向探针1的二甲基亚砜(DMSO)-H2O(95∶5,V∶V)磷酸缓冲盐溶液体系(PBS,pH=7.4)中...通过Knoevenagel缩合反应合成了探针分子1,探针分子1的结构用1 H NMR进行了表征。通过紫外-可见光谱及荧光光谱研究了探针分子1检测CN^(-)的能力,结果显示,向探针1的二甲基亚砜(DMSO)-H2O(95∶5,V∶V)磷酸缓冲盐溶液体系(PBS,pH=7.4)中加入Na^(+)、Ca^(2+)、Mg^(2+)、F^(-)、Cl^(-)、Br^(-)、I^(-)、AcO^(-)、H_(2)PO_(4)^(-)、NO_(3)^(-)、NO_(2)^(-)和CN^(-)后,仅CN^(-)可使探针1溶液的颜色由蓝色变为黄色,吸收光谱发生明显的变化(不受其他分析物的干扰)。探针1识别CN^(-)非常迅速,能够在较宽的pH范围内进行检测。在荧光滴定光谱中,探针1检测CN^(-)的检出限为0.14μmol/L,低于饮用水中CN^(-)的极限质量浓度(1.9μmol/L),表明探针1可用于环境和食品样品中CN^(-)的定性、定量检测。同时,基于探针1制备了CN^(-)快速检测试纸,该试纸被成功地应用于自来水样品和添加氰化物食品(辣白菜)中的现场快速检测。展开更多
文摘Iodine-doped (C22H16N2SO2) was prepared by doping the dye with iodine vapor. The following characteristics were obtained by structure analysis.1. The doped iodine exists as I3-anion and I2.2. Because the electron located on the sulphur atom was transferred to iodine, a charge transfer complx of (C22H16N2SO2I5) was formed.3. The complex was proved to exist in a quasi-one dimension conductor state, forming two ordered molecular stacks.4. From the volt-ampere curve with sandwich cell, the room temperature resistivity (ρ)and the exciting energe (ΔE) of the doped complex were shown to he 3.47×107Ω·cm-1and 0.4eV respectivily.5. Its electrical behavior obeys the fomula ρ = ρ0exp(ΔE/kt), showing the behavior of a typical semicanductor.
文摘通过Knoevenagel缩合反应合成了探针分子1,探针分子1的结构用1 H NMR进行了表征。通过紫外-可见光谱及荧光光谱研究了探针分子1检测CN^(-)的能力,结果显示,向探针1的二甲基亚砜(DMSO)-H2O(95∶5,V∶V)磷酸缓冲盐溶液体系(PBS,pH=7.4)中加入Na^(+)、Ca^(2+)、Mg^(2+)、F^(-)、Cl^(-)、Br^(-)、I^(-)、AcO^(-)、H_(2)PO_(4)^(-)、NO_(3)^(-)、NO_(2)^(-)和CN^(-)后,仅CN^(-)可使探针1溶液的颜色由蓝色变为黄色,吸收光谱发生明显的变化(不受其他分析物的干扰)。探针1识别CN^(-)非常迅速,能够在较宽的pH范围内进行检测。在荧光滴定光谱中,探针1检测CN^(-)的检出限为0.14μmol/L,低于饮用水中CN^(-)的极限质量浓度(1.9μmol/L),表明探针1可用于环境和食品样品中CN^(-)的定性、定量检测。同时,基于探针1制备了CN^(-)快速检测试纸,该试纸被成功地应用于自来水样品和添加氰化物食品(辣白菜)中的现场快速检测。
