排序方式: 共有33条查询结果,搜索用时 0 毫秒
31.
An electron donor-π-bridge-electron acceptor(D-π-A) optical functional organic compound comprising a triphenylamine moiety as the electron donor and pyridine moiety as the electron acceptor was synthesized. The structure of the compound was solved by single-crystal X-ray diffraction analysis. It crystallizes in monoclinic, space group P21, with a = 9.753(5), b = 8.815(5), c = 25.554(5) ?, β = 96.315(5)°, V = 2184(2) ?~3, Z = 2, D_c = 1.136 g/m~3, F(000) = 792, Μr = 746.92, μ = 0.069 mm~(-1), the final R = 0.0658 and wR = 0.1730 for 6790 observed reflections with I 2(I). Study of nonlinear optical properties shows that the compound exhibits excellent two-photon excited fluorescence with the two-photon absorption cross-section value of 116 GM. The structure-property relationship was researched in detail through X-ray crystallography and quantum chemical calculation. Result of living cell imaging experiment shows its potential in fluorescence microscopy bioimaging. 相似文献
32.
33.
以氯化铕、2-噻吩甲酰三氟丙酮(HTTA)和硅酸钠为原料制备了新型的检测二氯甲烷中乙醇含量的稀土配合物。通过在溶有所制备的稀土配合物的二氯甲烷溶液中滴加无水乙醇,发现溶液的荧光强度逐渐增强,而且具备一定的规律性。所制备的新型稀土配合物通过高分辨质谱分析表明,其结构属于多核稀土配合物。在二氯甲烷溶液中加入乙醇会改变溶液的极性,使多核稀土配合物发生解离从而增强荧光强度。这种稀土配合物可以作为荧光传感器检测有机溶剂中乙醇的含量。 相似文献