Dendrimers as Nd3+ ligands: Effect of generation on the efficiency of the sensitized lanthanide emission

URL:

http://www.scopus.com/inward/record.url?eid=2-s2.0-84875312121&partnerID=40&md5=3d7aaabb346a38b89ebb9419dca49770

Keywords:

Amides, Antenna effects, article, chemistry, Chromophores, Coordination Complexes, coordination compound, dansyl chloride, Dansyl Compounds, dendrimer, Dendrimer generation, Dendrimers, Dendrons, Energy transfer, Fluorescence, ion, Ions, lanthanide, Lanthanide emission, Lanthanide ion, Lanthanoid Series Elements, ligand, Ligands, neodymium, PAMAM Starburst, Photophysical properties, Poly(amido amine), Rare earth elements, spectrofluorometry, Spectrometry, Supramolecular chemistry, synthesis

Abstract:

We have designed two novel dendrimers with cyclam cores with appended poly(amido amine) (PAMAM) dendrons, decorated at the periphery with four and eight dansyl chromophores, respectively. The photophysical properties of the dendrimers and their Nd3+ complexes have been investigated. The energy-transfer efficiency to the lanthanide ions from these dendrimers has been studied as a function of the generation. It has been observed that an increase in the dendrimer generation as well as the number of amide units enhances the energy transfer to the lanthanide ion. Shine on: Two novel cyclam-core-based dendrimers with appended poly(amido amine) (PAMAM) dendrons, decorated at the periphery with four and eight dansyl chromophores, respectively, have been synthesized and characterized. Upon titration with Nd3+ it has been observed that an increase in the dendrimer generation as well as the number of amide units enhances the efficiency of the energy transfer to the lanthanide ion. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

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