中文摘要：

合成出一种新的磷酸根取代多联吡啶化合物6-（4-甲基磷酸苯基）-2,2＇-二联吡啶（2）及其Eu（III）的三元配合物[Eu（DBM）3（2）]（3）（DBM为二苯甲酰甲烷）,通过Si-O-P键将化合物2及配合物3负载到无机介孔材料MCM-41上,并研究了它们的电子光谱性质变化。电子光谱表明,化合物2在溶液中吸收峰分别位于327nm,274 nm和244 nm,随着pH值升高,分别蓝移至304 nm,263 nm和235 nm 同时发现溶液pH值对化合物的发射光谱也有很大的影响：随着pH值增加,其发射峰从427 nm蓝移至374 nm,荧光强度随之增大,当pH=6.34时荧光强度达到最大。随后增大pH值,发射峰位置变化较小,但荧光强度逐渐减小。当化合物2与3通过Si-O-P键与分子筛MCM-41负载后,其发射光谱发生明显变化。化合物2由无精细结构的单发射峰435 nm裂分为双发射峰435 nm和505 nm,而3发射峰位置未发生变化,但其发射峰强度出现了增强。

英文摘要：

A novel polypyridine compound,6 - （4 - methylphenylphosphonic acid） - 2,2＇- bipyridine （ 2 ） and its Eu （Ⅲ） ternary complex [ Eu （ DBM）3 （2） ] （3） （ DBM = dibenzoylmethide） were synthesized, and loaded on mesoprorous MCM -41 through P -O -Si bond. FTIR, UV/VIS spectroscopy ,luminescence spectroscopy as well as XRD were employed to characterize the compounds. Electronic absorption spectrum showed that the absorption band at 327 nm,274 nm and 244 nm of compound 2 were blue shifted to 304 nm,263 nm and 235 nm respectively with increasing the pH value,while the corresponding emission band at 427 nm was blue shifted to 374 nm with increas- ing of emission intensity when pH 〈 6.34. The emission intensity of band at 374 nm reached the maximum at pH = 6.34, and gradually decreased when pH 〉 6.34. After loading with MCM -41, the emission spectrum of compound 2 and 3 were abviously aherative with compound 2 single emission peak in 435nm splitting into two peaks in 435 nm and 505 nm,while compound 3 only increasing emission intensity.