Synthesis of PAMAM dendrimers with a resorcinarene core and their metal complexation

Abstract

Novel metal-chelating resorcinaren-poly(amidoamine) (PAMAM) dendrimers have been synthesised. The molecular structure of the resorcinaren-PAMAM dendrimers was characterised by ¹H NMR, ¹³C NMR spectroscopy and by elemental analysis. The molecular weight of the dendrimers was confirmed by MALDI-TOF experiments. Gel permeation chromatography indicated that the product contained only one product. The metal-binding properties of the hyperbranched resorcinaren-PAMAM dendrimers were studied by means of the polymer-supported nanofiltration polymer-supported nanofiltration technique. The results show that the second generation resorcinaren-PAMAM dendrimers retained ∼80% of Cu(II) and ∼35% of Ni(II).

Keywords:

• resorcinarene
• PAMAM
• dendrimers
• metal complexation

Acknowledgements

This work was supported by the ICYTDF (296/2010). We would also like to thank Dr Marcos Martinez Garcia (UNAM); Laboratorio de control Ambiental (CIITEC-IPN) and particularly Alvarez Torres M. for technical assistance.