Molecular Recognition and Transport of Active Pharmaceutical Ingredients on Anionic Calix[4]arene-Capped Silver Nanoparticles

Table 2

The slopes of the variation of the maximum wavelength of Ag_NP_Calix[𝑛]arene against the concentration of chlorhexidine.

Compounds	Slope (nm/M)	Rank
After 1 hour mixing with chlorhexidine
Ag_NP_𝟑SO3H	1.1×10^6	1
Ag_NP_𝟔PO3H2	4×10^5	2
Ag_NP_𝟏SO3H	3.6×10^5	3
Ag_NP_𝟐SO3H	2×10^5	4
Ag_NP_𝟓COOH	2×10^5	4
Ag_NP_𝟒COOH	0	5
After 24 hours mixing with chlorhexidine
Ag_NP_𝟐SO3H	1×10^6	1
Ag_NP_𝟏SO3H	5×10^5	2
Ag_NP_𝟑SO3H	3×10^5	3
Ag_NP_𝟔PO3H2	3×10^5	3
Ag_NP_𝟓COOH	3×10^5	3
Ag_NP_𝟒COOH	0	4