Heterogeneities in fullerene nanoparticle aggregates affecting reactivity, bioactivity, and transport.

dc.contributor.author

Chae, So-Ryong

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Badireddy, Appala R

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Farner Budarz, Jeffrey

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Lin, Shihong

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Xiao, Yao

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Therezien, Mathieu

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Wiesner, Mark R

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United States

dc.date.accessioned

2011-06-21T17:27:02Z

dc.date.issued

2010-09-28

dc.description.abstract

Properties of nanomaterial suspensions are typically summarized by average values for the purposes of characterizing these materials and interpreting experimental results. We show in this work that the heterogeneity in aqueous suspensions of fullerene C(60) aggregates (nC(60)) must be taken into account for the purposes of predicting nanomaterial transport, exposure, and biological activity. The production of reactive oxygen species (ROS), microbial inactivation, and the mobility of the aggregates of the nC(60) in a silicate porous medium all increased as suspensions were fractionated to enrich with smaller aggregates by progressive membrane filtration. These size-dependent differences are attributed to an increasing degree of hydroxylation of nC(60) aggregates with decreasing size. As the quantity and influence of these more reactive fractions may increase with time, experiments evaluating fullerene transport and toxicity end points must take into account the evolution and heterogeneity of fullerene suspensions.

dc.description.version

Version of Record

dc.identifier

http://www.ncbi.nlm.nih.gov/pubmed/20707347

dc.identifier.eissn

1936-086X

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https://hdl.handle.net/10161/4098

dc.language

eng

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en_US

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American Chemical Society (ACS)

dc.relation.ispartof

ACS Nano

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10.1021/nn100620d

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Acs Nano

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Bacteriophages

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Escherichia coli

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Filtration

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Fullerenes

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Membranes, Artificial

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Particle Size

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Porosity

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Reactive Oxygen Species

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Surface Properties

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Ultraviolet Rays

dc.title

Heterogeneities in fullerene nanoparticle aggregates affecting reactivity, bioactivity, and transport.

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dc.type

Journal article

duke.date.pubdate

2010-9-0

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9

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4

pubs.author-url

http://www.ncbi.nlm.nih.gov/pubmed/20707347

pubs.begin-page

5011

pubs.end-page

5018

pubs.issue

9

pubs.organisational-group

Civil and Environmental Engineering

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Duke

pubs.organisational-group

Duke Science & Society

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Earth and Ocean Sciences

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Environmental Sciences and Policy

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Initiatives

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Institutes and Provost's Academic Units

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Nicholas School of the Environment

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Pratt School of Engineering

pubs.publication-status

Published

pubs.volume

4

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