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Synthesis of Hydrophilic Two-Photon Absorptive Fullerene-diphenylaminoflourene Dyads for Molecular Self-assembly in Water

Published online by Cambridge University Press:  01 February 2011

Sarika Verma ,
Tanya Hauck ,
Prashant A. Padmawar ,
Taizoon Canteenwala ,
Long Y. Chiang  and
Kenneth P.H. Pritzker
Sarika Verma
Affiliation:
Department of Chemistry, Institute of Nanoscience and Engineering, University of Massachusetts, Lowell, MA 01854, U.S.A.
Tanya Hauck
Affiliation:
Pathology and Laboratory Medicine, Mount Sinai Hospital and University of Toronto, Toronto, ON M5G1X5, Canada.
Prashant A. Padmawar
Affiliation:
Department of Chemistry, Institute of Nanoscience and Engineering, University of Massachusetts, Lowell, MA 01854, U.S.A.
Taizoon Canteenwala
Affiliation:
Department of Chemistry, Institute of Nanoscience and Engineering, University of Massachusetts, Lowell, MA 01854, U.S.A.
Long Y. Chiang
Affiliation:
Department of Chemistry, Institute of Nanoscience and Engineering, University of Massachusetts, Lowell, MA 01854, U.S.A.
Kenneth P.H. Pritzker
Affiliation:
Pathology and Laboratory Medicine, Mount Sinai Hospital and University of Toronto, Toronto, ON M5G1X5, Canada.
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Abstract

Synthetic conditions for the preparation of amphiphilic two-photon absorptive poly(ethylene glycolated) diphenylaminofluorene[60]fullerene conjugates C60(>DPAF-PEG6) were investigated. UV-vis spectra of C60(>DPAF-PEG6) collected at the concentration of 1.0 × 10–5 M in water showed absorption bands with a slight red shift, broadened, and in a less intensity as compared with those of the bands obtained in CHCl3. These features are important characteristics of C60(>DPAF-PEG6) molecular aggregation in water. Transmission electron micrographs taken at the concentration of 1.0 × 10–5 M in H2O clearly displayed images of spherical aggregates in a diameter of 200–400 nm. That substantiated high hydrophobic intermolecular interactions between these amphiphilic molecules for assemblies in water.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 846: Symposium DD – Organic and Nanocomposite Optical Materials , 2004 , DD10.11
Copyright
Copyright © Materials Research Society 2005

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References

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