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. Author manuscript; available in PMC: 2012 Feb 1.
Published in final edited form as: J Inorg Biochem. 2010 Nov 13;105(2):276–282. doi: 10.1016/j.jinorgbio.2010.11.005

Table 2.

Affinity constants for the interaction between [Au(CQ)(PPh3)]PF6 and calf thymus DNA

Compounds Absorption Titration Emission Titration
Kb1(×107 M−1)a Kb2(×105 M−1)a Kb1(×107 M−1)b Kb2(×105 M−1)b
CQDP 1.38 ± 0.56 1.02 ± 0.15 3.24 ± 1.21 3.26 ± 1.01
[Au(CQ)(PPh3)] PF6 3.79 ± 0.01 1.84 ± 0.89 5.27 ± 1.82 2.44 ± 1.69

Chloroquine diphosphate (CQDP), Chloroquine (CQ)

a

Averages of values calculated at 340 nm from absorption spectra.

b

Averages of values calculated at 389 nm from fluorescence spectra.