Spectroscopic Analysis of Au-Cu Alloy Nanoparticles of Various Compositions Synthesized by a Chemical Reduction Method

Table 4

Parameters obtained from fluorescence spectroscopy.

S. number	Au : Cu			λmax/nm	Number of atoms ()	Binding sites	Binding constant	/(KJ/mol)
1	3 : 1	320	250	558	350	0.19	7.89
2	2 : 1	320	235	559	425	0.33	24.60
3	1 : 1	320	225	560	485	0.56	115.5
4	1 : 2	320	215	560	505	0.65	180.3
5	1 : 3	320	200	560	530	0.72	195.25