An Analytical Method for Detecting Toxic Metal Cations Using Cyclotriveratrylene Derivative Capped Gold Nanoparticles

Authors

Zachary R. Osner, Loyola University Chicago
Richard C. Holz, Marquette UniversityFollow
Daniel P. Becker, Loyola University ChicagoFollow

Document Type

Article

Language

eng

Format of Original

5 p.

Publication Date

9-30-2015

Publisher

Elsevier

Source Publication

Tetrahedron Letters

Source ISSN

0040-4039

Abstract

Cyclotriveratrylene-oxime (CTV-oxime) derivatives that terminate with a dithiolate linker were synthesized enabling the supramolecular scaffold to adhere to gold nanoparticles (AuNPs) with the bowl-shaped cavity of the CTV scaffold exposed for utilization in host–guest chemistry. Exposure of these CTV functionalized AuNPs to varying concentrations of di- and trivalent metal cations resulted in the formation of large CTV-AuNP polymeric clusters and an accompanying a shift in the plasmon resonance. These interactions between the CTV-AuNPs and the metal cations in solution provides proof-of-concept that supramolecular functionalized AuNPs can be used as a simple and straightforward, on-site detection system for toxic metal cations in solution. The order of binding affinity of the metals studied based on observed K_d values is Cu²⁺ > Zn²⁺ > Pb²⁺ > Hg²⁺ > Eu³⁺ > Cd²⁺.

Comments

Accepted Version Tetrahedron Letters, Vol. 56, No. 40 (September 30, 2015): 5419-5423. DOI. © 2019 Elsevier B.V. or its licensors or contributors. Used with permission.

Recommended Citation

Osner, Zachary R.; Holz, Richard C.; and Becker, Daniel P., "An Analytical Method for Detecting Toxic Metal Cations Using Cyclotriveratrylene Derivative Capped Gold Nanoparticles" (2015). Chemistry Faculty Research and Publications. 487.
https://epublications.marquette.edu/chem_fac/487