Preparation of fullerene-shell dendrimer-core nanoconjugates

Anton W. Jensen; Brijesh S. Maru; Xi Zhang; Dillip K. Mohanty; Bradley D. Fahlman; Douglas R. Swanson; Donald A. Tomalia

doi:10.1021/nl0502975

Preparation of fullerene-shell dendrimer-core nanoconjugates

Anton W. Jensen, Brijesh S. Maru, Xi Zhang, Dillip K. Mohanty, Bradley D. Fahlman, Douglas R. Swanson, Donald A. Tomalia

Research output: Contribution to journal › Article › peer-review

57 Scopus citations

Abstract

Generation 4 amine-terminated polyamidoamine dendrimer (PAMAM G4) was allowed to react with an excess of buckminsterfullerene (C ₆₀) to form a nanoconjugate containing a PAMAM core and C ₆₀ shell. The PAMAM-C ₆₀ conjugate was characterized by MALDI-TOF, TGA, UV-vis, and IR spectroscopy. Approximately thirty shell fullerenes surround each dendrimer core. The conjugates catalyze photooxidation of thioanisole by generation of singlet oxygen ( ¹O ₂). The oxidation reactions occur in both organic and aqueous solvents, but the reactivity is enhanced in aqueous solution, possibly due to a nanoreactor effect resulting from diffusion of hydrophobic reactant molecules into dendrimer cavities. ¹

Original language	English
Pages (from-to)	1171-1173
Number of pages	3
Journal	Nano Letters
Volume	5
Issue number	6
DOIs	https://doi.org/10.1021/nl0502975
State	Published - Jun 2005

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abstract = "Generation 4 amine-terminated polyamidoamine dendrimer (PAMAM G4) was allowed to react with an excess of buckminsterfullerene (C 60) to form a nanoconjugate containing a PAMAM core and C 60 shell. The PAMAM-C 60 conjugate was characterized by MALDI-TOF, TGA, UV-vis, and IR spectroscopy. Approximately thirty shell fullerenes surround each dendrimer core. The conjugates catalyze photooxidation of thioanisole by generation of singlet oxygen ( 1O 2). The oxidation reactions occur in both organic and aqueous solvents, but the reactivity is enhanced in aqueous solution, possibly due to a nanoreactor effect resulting from diffusion of hydrophobic reactant molecules into dendrimer cavities. 1",

author = "Jensen, {Anton W.} and Maru, {Brijesh S.} and Xi Zhang and Mohanty, {Dillip K.} and Fahlman, {Bradley D.} and Swanson, {Douglas R.} and Tomalia, {Donald A.}",

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T1 - Preparation of fullerene-shell dendrimer-core nanoconjugates

AU - Jensen, Anton W.

AU - Maru, Brijesh S.

AU - Zhang, Xi

AU - Mohanty, Dillip K.

AU - Fahlman, Bradley D.

AU - Swanson, Douglas R.

AU - Tomalia, Donald A.

PY - 2005/6

Y1 - 2005/6

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AB - Generation 4 amine-terminated polyamidoamine dendrimer (PAMAM G4) was allowed to react with an excess of buckminsterfullerene (C 60) to form a nanoconjugate containing a PAMAM core and C 60 shell. The PAMAM-C 60 conjugate was characterized by MALDI-TOF, TGA, UV-vis, and IR spectroscopy. Approximately thirty shell fullerenes surround each dendrimer core. The conjugates catalyze photooxidation of thioanisole by generation of singlet oxygen ( 1O 2). The oxidation reactions occur in both organic and aqueous solvents, but the reactivity is enhanced in aqueous solution, possibly due to a nanoreactor effect resulting from diffusion of hydrophobic reactant molecules into dendrimer cavities. 1

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Preparation of fullerene-shell dendrimer-core nanoconjugates

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