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Materials Technology
Advanced Performance Materials
Volume 36, 2021 - Issue 2
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Research Article

Spectrophotometric study of the interaction of active pharmaceutical ingredients with colloidal silver nanoparticles capped by sulfonato-calix[6]arene derivatives

, , , &
Pages 81-90 | Received 22 Sep 2019, Accepted 07 Feb 2020, Published online: 13 Feb 2020
 

ABSTRACT

Three sulfonato-calix[6]arene derivatives, namely para-sulfonato-calix[6]arene, calix[6]arene-O-propyl-3-sulphonate and para-sulfonato-calix[6]arene-O-propyl-3-sulphonate have been used as capping agents for silver nanoparticles. The sulfonato-calix[6]arene derivatives were demonstrated to stabilise the nanoparticles, and to act as ligands for molecular recognition at the surface of the nanoparticles. The nanoparticles were characterised by UV-visible spectroscopy, dynamic light scattering, zeta potential and scanning electron microscopy. The localised surface plasmon resonance of the nanoparticles was shown to be highly sensitive to the local environment, and was used to evaluate molecular interactions with four active pharmaceutical ingredients: streptomycin, gentamycin, D-penicillamine and chloramphenicol. Changes in spectral intensity and wavelength have shown that the interactions are dependent on both the nature of the active pharmaceutical ingredient and that of the calix[6]arene receptor.

Acknowledgments

The authors thank Dr. Anthony. W Coleman (Retired) for his effective contribution to this work.

Disclosure statement

No potential conflict of interest was reported by the authors.

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