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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。
Water-soluble calix [4] arene (L4) can form energy transfer complexes with Sm3 +, but the energy transfer efficiency is low, the red emission of Sm3 + is weak, and self-quenching also occurs when the concentration of complex solution increases. According to the distribution of the first excited state and the first excited triplet energy level, we can reasonably explain this phenomenon by comparing the 4f levels of rare earth ions such as Sm3 +, Eu3 + and Tb3 +.