（7—甲氧基—4—亚甲基）香豆素基—单氮杂18—冠—6的合成及其？…

合成、鉴定了题示光敏离子载体（ＭＭＣ－ＭＡＣ（Ｏ５）。其中不同ｐＨ值水溶液中吸收和荧光光谱的变化，计算得该剂基态和激发态分子的酸性常数（ｐＫａ＝８．８４，ｐＫａ＾＊＝５．１１）。基于在不同溶剂中荧光光谱的变化，由Ｓｏｌｖａｃｈｒｏｍｉｃ法，借助Ａｌｃｈｅｍｙ２０００量化计算软件，估算得该分子的基态和激发态偶极矩，分别为３．１１Ｄ和８．１３Ｄ。同时发现，ＭＭＣ－ＭＡＣ（Ｏ５）水溶液除氧后其荧光强度奇

Synthesis and ion recognition function of 7-methoxy-4-methene-coumarin-monoaza-18-crown-6 (I) synthesis and spectroscopic properties]

The title reagent MMC-MAC (O5) is synthesized and characterized. Its acidic dissociation constant at ground and excited state are determined based on the changes of the absorption and fluorescence spectra in the water. According to the wavelength shift of fluorescence spectra in different solvent, the dipole moments of ground and excited state are estimated based on the molecular mechanics model using a alchemy 2000 software and the solvachromic method using the Lippert equation,the value is 3.11D and 8.13D,respectively. It's also found that fluorescence intensity of MMC-MAC(O5) aqueous solution is increased marvelously about twenty times and accompanying with delay fluorescence emit when deoxygenation from the solution by H2SO3-N+ (CH3) 4OH-. The intensity of normal fluorescence and delay fluorescence are proportional to the concentration of MMC-MAC(O5) in the range of 4 x 10(-8)-2 x 10(-6) and 2 x 10(-7)-2 x 10(-6) mol x L(-1), and the detection limits are 2 x 10(-9) and 1.3 x 10(-8) mol x L(-1) respectively.