𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Preparation and Electrochemical Characterization of a β-Cyclodextrin-Based Chemically Modified Electrode

✍ Scribed by A. D'Annibale; R. Regoli; P. Sangiorgio; T. Ferri

Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
143 KB
Volume
11
Category
Article
ISSN
1040-0397

No coin nor oath required. For personal study only.

✦ Synopsis

The preparation and the voltammetric characterization of a chemically modi®ed electrode (CME) based on a suitable thiolate b-cyclodextrin (bCD) derivative in the form of self-assembled monolayer (SAM) is described. The quality of SAM was studied by double layer capacitance measurements, reductive desorption and cyclic voltammetry. Species unable (hexacyanoferrate) or able (ferrocenecarboxylic acid and hydroquinone) to permeate the bCD cavity were used to test the CME by cyclic voltammetry. The CME can work as channel sensor so it can be used for the detection of nonelectroactive analytes forming a strong inclusion complex with bCD if a suitable marker able to permeate the bCD cavity is used. This approach was also used for the evaluation of the conditional constants of the surface host-guest complexes formed by bCD with analytes in test (trimethyilcetylammonium ion and ursodeoxycholic acid).

📜 SIMILAR VOLUMES

Determination of Nitrendipine with β-Cyc
Determination of Nitrendipine with β-Cyclodextrin Modified Carbon Paste Electrode
✍ C. Yáñez; L. J. Núñez-Vergara; J. A. Squella 📂 Article 📅 2002 🏛 John Wiley and Sons 🌐 English ⚖ 83 KB

Carbon paste electrodes modified with b-cyclodextrin have been investigated for voltammetric determination of nitrendipine. The immobilization of the b-cyclodextrin on the carbon paste leads to a modification of the electrode surface that causes a significant increase in the peak current of the nitr