Journal of The Serbian Chemical Society 

About: Journal of The Serbian Chemical Society is an academic journal published by Serbian Chemical Society. The journal publishes majorly in the area(s): Adsorption & Chemistry. It has an ISSN identifier of 0352-5139. It is also open access. Over the lifetime, 2966 publications have been published receiving 28532 citations.

A consideration of the correct calculation of thermodynamic parameters of adsorption

Abstract: The Langmuir and Freundlich isotherm equations have been widely used for interpreting various adsorption processes. There are, however, many serious mistakes in the literature in determination or calculation of thermodynamic parameters, especially in the determination of the change in the free energy of adsorption using Langmuir, Freundlich and Henry constants. Many authors used these constants for the determination of ∆G expressed instead of dimensionless in some concentration units (for example: l mol-1, l g-1, ml mg-1, etc.).

Investigation of metal-flavonoid chelates and the determination of flavonoids via metal-flavonoid complexing reactions*

Abstract: Flavonoids constitute a large group of polyphenolic phytochemicals with antioxidant properties which are overwhelmingly exerted through direct free radical scavenging. Flavonoids also exhibit antioxidant properties through chelating with tran- sition metals, primarily Fe(II), Fe(III) and Cu(II), which participate in reactions ge- nerating free radicals. Metal-flavonoid chelates are considerably more potent free radical scavengers than the parent flavonoids and play a prominent role in protec- ting from oxidative stress. To unravel the origin of their potent biological action ex- tensive physico-chemical studies were undertaken to reveal the chemical structure, chelation sites, assess the impact of the metal/ligand ratio on the structure of the com- plexes and the capacity of flavonoids to bind metal ions. In spite of such extensive efforts, data on the composition, structure and complex-formation properties are in- complete and sometimes even contradictory. The aim of this paper is to give a per- sonal account on the development of the field through a retrospective evaluation of our own research which covers approximately 40 complexes of flavonoids from dif- ferent flavonoids subclasses (rutin, quercetin, 3-hydroxyflavone, morin and hespe- ridin) with several metal ions or groups and suggest directions for future research. Special emphasis will be given to the site of the central ion, the composition of the complexes, the role of pH in complex formation, the stability of metal-flavonoid com- plexes and their potential application for analytical purposes.

Topology and stability of conjugated hydrocarbons: The dependence of total π-electron energy on molecular topology

Abstract: In spite of the fact that research on the mathematical properties of the total π-electron energy E (as computed by means of the Huckel molecular orbital approximation) started already in the 1940s, many results in this area have been obtained also in the newest times. In 1978 this author published in this journal a review on E. The present article is another review on E, summarizing the progress in the theory of E, achieved since then.

Carbon paste electrodes in electroanalytical chemistry

Abstract: An overview is given dealing with the applications of carbon paste electrodes in equilibrium potentiometry as well as in electrochemical stripping analysis using both voltammetric and potentiometric modes. Various modifications of carbon pastes and carbon paste-based biosensors are also mentioned. The main emphasis in this article is directed at summarizing recent results of the authors' research group during the past few years.

Synthesis and antibacterial activity of some Schiff bases derived from 4-aminobenzoic acid

Abstract: The following Schiff bases have been synthesized: (1) 4-(2-chlorobenzylidene)amino benzoic acid JP1, (2) 4 (furan-2-ylmethylene)amino benzoic acid JP2, (3) 4-[(3-phenylallylidene)amino]benzoic acid JP3, (4) 4 (2-hydroxybenzylidene)amino benzoic acid JP4, (5) 4 (4-hydroxy-3-methoxybenzylidene)amino benzoic acid JP5 and (6) 4 (3-nitrobenzylidene)amino benzoic acid JP6. They were screened as potential antibacterial agents against a number of medically important bacterial strains. The antibacterial activity was studied against A. faecalis ATCC 8750, E. aerogenes ATCC 13048, E. coli ATCC 25922, K. pneumoniae NCIM 2719 S. aureus ATCC 25923, P. vulgaris NCIM 8313, P. aeruginosa ATCC 27853 and S. typhimurium ATCC 23564. The antibacterial activity was evaluated using the Agar Ditch method. The solvents used were 1,4-dioxane and dimethyl sulfoxide. Different effects of the compounds were found in the bacterial strains in vestigated and the solvents used, suggesting, once again, that the antibacterial activity is dependent on the molecular structure of the compound, the solvent used and the bacterial strain under consideration. In the present work, 1,4-dioxane proved to be a good solvent in inhibiting the above stated bacterial strains.