Table 4:
B
inding constant and absorption (
λ
max
) data of
1- 4
complexes with respect to CT DNA.
Complex
λ
max
/
nm
Δλ/nm
K
b
/ M
-1
Free
Bound
1
441.6
443.4
1.8
7.6 x 10
-4
2
440.8
441.8
1.0
6.3 x 10
-4
3
439.2
439.6
0.8
5.6 x 10
-4
4
438.4
438.8
0.4
4.2 x 10
-4
*
H%
=
Hyperchromism; Δλ = Bathochromic shift.