US EPA

1468184 

Journal Article 

Facile route to supramolecular structures: self-assembly of dendrimers and naphthalene dicarboxylic acids 

Gröhn, F; Klein, K; Brand, S 

2008 

Yes 

Chemistry: A European Journal
ISSN: 0947-6539
EISSN: 1521-3765 

14 

23 

6866-6869 

English 

18576456 

10.1002/chem.200800650 

WOS:000258683600007 

https://www.scopus.com/inward/record.uri?eid=2-s2.0-53849134879&doi=10.1002%2fchem.200800650&partnerID=40&md5=b1f65898539769f620bbafcc59f1d0f8
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The electrostatic self-assembly of macroions and organic counterions to form supramolecular architectures was studied. Small-angle neutron scattering was performed at beamline ID2, ESRF, Gre-noble. Data were analyzed by Fourier Transformation into the pair distance distribution function P(r). Data analysis of the cross-section P(r) shows a homogeneous scattering contrast for the cylindrical particles, which means that they are not hollow. The absolute scattering intensity produces an apparent molecular weight, which indicates that about 800 dendrimer molecules and the corresponding number of dye molecules are associated in the particle. The charged nature of the aggregates was confirmed by zeta-potential measurements, which revealed their overall positive charge. Fluorescence spectroscopy on diluted samples showed that both aggregates are fluorescent. The results also demonstrate that the binding concept yields stable supramolecular structures with different morphologies.