摘要
水溶性杯[4]芳烃(L4)可以与Sm3+形成能量传递配合物,但是能量传递效率较低,Sm3+的红光发射较弱,而且配合物溶液浓度增大时还发生自猝灭现象。根据配体第一激发态和第一激发三重态能级分布,比较Sm3+、Eu3+、Tb3+等稀土离子4f能级,可以合理地解释这种现象。
The spectroscopic properties on formation complex of 25,26,27,28-tetra-carboxylic acid-5,11,17,23-calix[4]arenesulfonate (L\-4) and samarium (III) ion was investigated by UV-Vis and fluorescence measurements. L\-4 can form an energy transfer complex with Sm\+\{3+\}, but the fluorescence of L\-4·Sm\+\{3+\} is not strong and easily quenched by itself. The energy transfer mechanism from ligand to rare earth ions was also discussed.
出处
《河南科学》
2003年第2期152-154,共3页
Henan Science