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One-Pot Synthesis of Block Copolymers in Supercritical Carbon Dioxide: A Simple Versatile Route to Nanostructured Microparticles

Overview of attention for article published in Journal of the American Chemical Society, February 2012
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Title
One-Pot Synthesis of Block Copolymers in Supercritical Carbon Dioxide: A Simple Versatile Route to Nanostructured Microparticles
Published in
Journal of the American Chemical Society, February 2012
DOI 10.1021/ja210577h
Pubmed ID
Authors

James Jennings, Mariana Beija, Alexandre P. Richez, Samuel D. Cooper, Paul E. Mignot, Kristofer J. Thurecht, Kevin S. Jack, Steven M. Howdle

Abstract

We present a one-pot synthesis for well-defined nanostructured polymeric microparticles formed from block copolymers that could easily be adapted to commercial scale. We have utilized reversible addition-fragmentation chain transfer (RAFT) polymerization to prepare block copolymers in a dispersion polymerization in supercritical carbon dioxide, an efficient process which uses no additional solvents and hence is environmentally acceptable. We demonstrate that a wide range of monomer types, including methacrylates, acrylamides, and styrenics, can be utilized leading to block copolymer materials that are amphiphilic (e.g., poly(methyl methacrylate)-b-poly(N,N-dimethylacrylamide)) and/or mechanically diverse (e.g., poly(methyl methacrylate)-b-poly(N,N-dimethylaminoethylmethacrylate)). Interrogation of the internal structure of the microparticles reveals an array of nanoscale morphologies, including multilayered, curved cylindrical, and spherical domains. Surprisingly, control can also be exerted by changing the chemical nature of the constituent blocks and it is clear that selective CO(2) sorption must strongly influence the block copolymer phase behavior, resulting in kinetically trapped morphologies that are different from those conventionally observed for block copolymer thin films formed in absence of CO(2).

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Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 86 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
United States 3 3%
India 2 2%
Unknown 81 94%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 36 42%
Researcher 13 15%
Student > Master 8 9%
Student > Doctoral Student 5 6%
Student > Bachelor 5 6%
Other 8 9%
Unknown 11 13%
Readers by discipline Count As %
Chemistry 46 53%
Materials Science 14 16%
Physics and Astronomy 3 3%
Engineering 2 2%
Chemical Engineering 2 2%
Other 4 5%
Unknown 15 17%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 30 October 2014.
All research outputs
#15,308,698
of 22,768,097 outputs
Outputs from Journal of the American Chemical Society
#55,438
of 61,931 outputs
Outputs of similar age
#99,737
of 155,611 outputs
Outputs of similar age from Journal of the American Chemical Society
#397
of 536 outputs
Altmetric has tracked 22,768,097 research outputs across all sources so far. This one is in the 22nd percentile – i.e., 22% of other outputs scored the same or lower than it.
So far Altmetric has tracked 61,931 research outputs from this source. They typically receive a little more attention than average, with a mean Attention Score of 6.8. This one is in the 6th percentile – i.e., 6% of its peers scored the same or lower than it.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 155,611 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 24th percentile – i.e., 24% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 536 others from the same source and published within six weeks on either side of this one. This one is in the 10th percentile – i.e., 10% of its contemporaries scored the same or lower than it.