Synthesis, Characterization of La(III), Nd(III), and Er(III) Complexes with Schiff Bases Derived from Benzopyran-4-one and Thier Fluorescence Study

Table 5

Fluorescence data of ligands and their neodymium and erbium complexes in DMF.

Symbol	𝜆exc. (nm)	𝜆em (nm)	F. I*
L^1	335	363	75
Nd-L^1	335	375	498
Er-L^1	335	373	203
L^2	330	363	95
Nd-L^2	340	412	719
Er-L^2	340	412	666
L^3	330	363	88
Nd-L^3	325	421,448	104,105
Er2-L^3	335	372,392	111,122

*F. I. is fluorescence intensity.