Theoretical study of structural relationships and electrochemical properties of supramolecular [tetracyclines]

Theoretical Study of Structural Relationships and Electrochemical Properties of Supramolecular [Tetracyclines].Cn Complexes Taherpour A (Taherpour, Avat Arman), Cheraghi O (Cheraghi, Omid) Source: FULLERENES NANOTUBES AND CARBON NANOSTRUCTURES Volume: 17 Issue: 6 Pages: 636-
651 Published: 2009
Abstract: Tetracyclines are a broad spectrum of antibiotics that are commonly used in human pathologies as well
as in veterinary medicine as animal nutrition and feed additives for cattle growth. The electrochemical oxidation of
the tetracycline antibiotics was studied at various carbon electrodes including glassy carbon (GC), as deposited
BDD (boron-doped diamond thin film) and anodized BDD electrodes using cyclic voltammetry. Since the
discovery of fullerenes (Cn), one of the main classes of carbon compounds, the unusual structures and
physiochemical properties of these molecules have been discovered, and many potential applications and
physicochemical properties have been introduced. Up to now, various empty carbon fullerenes with different
numbers on,o such as C60, C70, C76, C82 and C86, have been obtained. Topological indices are digital values
that are assigned based on chemical composition. These values are purported to correlate chemical structures
with various chemical and physical properties. They have been successfully used to construct effective and useful
mathematical methods to establish clear relationships between structural data and the physical properties of
these materials. In this study, the number of carbon atoms in the fullerenes was used as an index to establish a
relationship between the structures of Tetracycline (TC), Chlortetracycline (CTC), Doxytetracycline (DTC) and
Oxyteracycline (OTC), 1-4 and fullerenes Cn (n=60, 70, 76, 82 and 86), which create [Tetracyclines].Cn, A-1 to A-
5 ([TC].Cn), B-1 to B-5 ([CTC].Cn), C-1 to C-5 ([DTC].Cn) and D-1 to D-5 ([OTC].Cn). The relationship between
the number of carbon atoms and the free energies of electron transfer (Get(1) to Get(4) ) are assessed using the
Rehm-Weller equation for A-1 to A-5, B1 to B-5, C-1 to C-5 and D-1 to D-5 supramolecular [Tetracyclines].Cn
complexes 5-24. Calculations are presented for the four reduction potentials ( Red.E1 to Red.E4 ) of fullerenes
Cn . The results were used to calculate the four free-energies of electron transfer (Get(1) to Get(4) ) of
supramolecular complexes A-1 to A-19 to B-1 to B-19, C-1 to C-19 and D-1 to D-19 (5-81) for fullerenes C60 to
C300.
Document Type: Article
Language: English
Author Keywords: Fullerenes; Tetracycline; Chlortetracycline; Doxytetracycline; Oxyteracycline; Rehm-Weller
equation; Free energy of electron transfer; Electrochemical properties; Reduction potential
KeyWords Plus: THIN-FILM ELECTRODE; PERFORMANCE LIQUID-CHROMATOGRAPHY; FLOW-INJECTION
SYSTEM; CONDUCTIVE DIAMOND ELECTRODES; PULSED AMPEROMETRIC DETECTION;
UNSATURATED THIACROWN ETHERS; SOLID-PHASE EXTRACTION; TETRACYCLINE ANTIBIOTICS;
CARBON NANOTUBES; SPECTROFLUOROMETRIC DETERMINATION
Reprint Address: Taherpour, A (reprint author), Univ Queensland, Sch Mol & Microbial Sci, Unusual Mol & React
Intermediates Grp, Brisbane, Qld 4072 Australia
Addresses:
1. Islam Azad Univ, Fac Sci, Dept Chem, Arak, Iran
E-mail Addresses:
Publisher: TAYLOR & FRANCIS INC, 325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA
Subject Category: Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Physics, Atomic, Molecular & Chemical
IDS Number: 520KM
ISSN: 1536-383X
DOI: 10.1080/15363830903291523
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