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Dendrimer–Fullerenol Soft-Condensed Nanoassembly

Authors :
Bhattacharya, Priyanka
Kim, Seung Ha
Chen, Pengyu
Chen, Ran
Spuches, Anne M.
Brown, Jared M.
Lamm, Monica H.
Ke, Pu Chun
Source :
The Journal of Physical Chemistry - Part C; July 2012, Vol. 116 Issue: 29 p15775-15781, 7p
Publication Year :
2012

Abstract

Nanoscale assembly is an area of research that has vast implications for molecular design, sensing, nanofabrication, supramolecular chemistry, catalysis, and environmental remediation. Here we show that poly(amidoamine) (PAMAM) dendrimers of both generations 1 (G1) and 4 (G4) can host 1 fullerenol per 2 dendrimer primary amines as evidenced by isothermal titration calorimetry, dynamic light scattering, and spectrofluorometry. Thermodynamically, the interactions were similarly spontaneous between both generations of dendrimers and fullerenols, however, G4 formed stronger complexes with fullerenols resulting from their higher surface charge density and more internal voids, as demonstrated by spectrofluorometry. In addition to hydrogen bonding that existed between the dendrimer primary amines and the fullerenol oxygens, hydrophobic and electrostatic interactions also contributed to complex formation and dynamics. Such a hybrid of soft and condensed nanoassembly may have implications for environmental remediation of discharged nanomaterials and entail new applications in drug delivery.

Details

Language :
English
ISSN :
19327447 and 19327455
Volume :
116
Issue :
29
Database :
Supplemental Index
Journal :
The Journal of Physical Chemistry - Part C
Publication Type :
Periodical
Accession number :
ejs27853057
Full Text :
https://doi.org/10.1021/jp3036692