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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 2:35 |
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Conference: Bucharest University Faculty of Physics 2011 Meeting
Section: Polymer Physics
Title:
Carbon nanotubes-flavonoid compounds new biohybrids with antioxidant properties
Authors:
Cornelia Nichita(1,2), I. Stamatin(1), S. Iordache(1), Adriana Andronie(1)
Affiliation:
(1)University of Bucharest, Faculty of Physics, 3Nano-SAE Research Centre , MG-38, Bucharest-Magurele, Romania
(2)National Institute for Chemical-Pharmaceutical Research and Development, 112 Vitan Street, 031299, Bucharest, Romania
E-mail
office@3nanosae.org
Keywords:
antioxidants, carbon nanotubes, flavonoids
Abstract:
New bionanohybrids with high antioxidant capacity have been developed based on SWCNTs (carboxylated, respective hydroxylated) and flavonoids. Chemiluminiscence, AFM, FT-IR and Raman shown a self assembling via OH or COOH groups for each specific flavonoids. Flavonoids are a group of polyphenolic compounds with known properties which include free radical scavenging, inhibition of hydrolytic and oxidative enzymes and anti-inflammatory action. The antioxidant activity of flavonoids is mainly due to their redox properties, which allow them to act as reducing agents, hydrogen donors, and singlet oxygen quenchers. It is shown these properties are amplified when they are supported on CNT. DSC and Thermogravimetry shown a specific interaction with bonding to the hydroxyl/carboxyl groups.
Note: This work was supported by the strategic grant POSDRU/ 89 / 1.5 / S / 58852, Project „Postdoctoral programme for training scientific researchers“ cofinanced by the European Social Found within the Sectorial Operational Program Human Resources Development 2007-2013“.
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