This article described the synthesis of triazine-based dendrimers with poly(ethylene glycol) core by convergent method. Compound 1 was prepared by coupling of amino group of diethanolamine with cyanuric chloride in dry THF (tetrahydrofuran). Reaction of compound 1 with p-aminobenzylamine resulted in compound 2. Compound 4 was synthesized using coupling reaction of amino group of compound 2 with cyanuric chloride, then coupling of amine groups of p-aminobenzylamine with compound 3 in the hybrid solvents. The final dendrimer (den-OH) were synthesized using reaction of dendron 4 with compound 5. Ethylene diaminetetraacetic acid modified final dendrimer were successfully prepared via coupling ethylene diaminetetraacetic acid dianhydride and den-OH. The growth of dendrons and their structures were investigated by using usual spectroscopy methods and elemental analysis. The chelating behavior and sorption capacities of triazine dendrimers were determined in relation to pH dependency for some metal ions such as Cu(+2), Ni(+2), and Zn(+2) using atomic absorption methods. (C) 2011 Wiley Periodicals, Inc. J Appl Polym Sci 123: 1245-1251, 2012