李政, 宋益善, 左思语,刘超,马晨晨

氨基酸分子首次用以制备构筑稀土介孔发光材料.L-丝氨酸通过分子修饰得到新配体2-烟酰氨基-3-羟基丙酸(L),并进一步引入MCM-41介孔基质中,最后和稀土Tb3+离子复合得发光介孔材料Tb-L-MCM-41.通过核磁共振、紫外、XRD、氮吸附和荧光光谱等对配体和杂化材料的结构和性质进行了表征.结果表明,配体L很好的引入到MCM-41介孔基质中,Tb-L-MCM-41介孔材料呈现L的特征紫外吸收.同时,稀土配合物的引入占据了MCM41基质的部分孔道,使其比表面和孔体积都有所降度.Tb-L-MCM-41呈现稀土Tb3+离子的特征光.

Construction of luminescent lanthanide complex / MCM-41 hybird mesoporous material by L-serine acting as molecular bridge

The amino acid molecule was first used to construct luminescent lanthanide-based mesoporous materials. L-serine was modified and the novel ligand HNPA = 3-hydroxy-2-(nicotinamido)propanoic acid was synthesized. The ligand was introduced into MCM-41 host, and further reacted with Tb₃₊ ions to form luminescent mesoporous material Tb-L-MCM-41. The ligand and Tb-L-MCM-41 were investigated by NMR, UV, XRD, N2 adsorption/desorption and fluorescent spectra. The results indicated the novel ligand has been introduced into the mesoporous material system, and Tb-L-MCM-41 exhibits the characteristic absorption of ligand. In addition, the incorporation of the complexes reduces the diameter of the micelles of MCM-41 host, as a result, the surface area and pore volume were decreased. Tb-L-MCM-41 shows the characteristic emission of Tb₃ ions.