Ordering of binary polymeric nanoparticles on hydrophobic surfaces assembled from low volume fraction dispersions

Rupa Mukhopadhyay; Othman Al-Hanbali; Saju Pillai; Anne Gry Hemmersam; Rikke Louise Meyer; Alan Christy Hunter; Kenneth John Rutt; Flemming Besenbacher; Seyed Moein Moghimi; Peter Kingshott

doi:10.1021/ja075988c

Ordering of binary polymeric nanoparticles on hydrophobic surfaces assembled from low volume fraction dispersions

Rupa Mukhopadhyay, Othman Al-Hanbali, Saju Pillai, Anne Gry Hemmersam, Rikke Louise Meyer, Alan Christy Hunter, Kenneth John Rutt, Flemming Besenbacher, Seyed Moein Moghimi, Peter Kingshott

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

39 Scopus citations

Abstract

Well-ordered two-component nanoparticle (NP) patterns are generated on hydrophobic surfaces from mixed particle suspensions of very low volume fraction by simple drop-casting and self-assembly during solvent evaporation. A range of NP sizes (520-60 nm), volume fractions, and particle chemistries (aminated, carboxylated, sulfated) are tested, and in all cases, hexagonally packed patterns of the larger NP interdispersed with the smaller NP are obtained. The mechanism for formation appears to be entropically driven since the pattern formation occurs over a wide pH range (4-10) and is thus independent of particle surface charge. The nanopatterns show promise as model systems for studying interfacial phenomena such as protein adsorption and cell adhesion.

Original language	English (US)
Pages (from-to)	13390-13391
Number of pages	2
Journal	Journal of the American Chemical Society
Volume	129
Issue number	44
DOIs	https://doi.org/10.1021/ja075988c
State	Published - Nov 7 2007

ASJC Scopus subject areas

Catalysis
Chemistry(all)
Biochemistry
Colloid and Surface Chemistry

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Mukhopadhyay, R., Al-Hanbali, O., Pillai, S., Hemmersam, A. G., Meyer, R. L., Hunter, A. C., Rutt, K. J., Besenbacher, F., Moghimi, S. M., & Kingshott, P. (2007). Ordering of binary polymeric nanoparticles on hydrophobic surfaces assembled from low volume fraction dispersions. Journal of the American Chemical Society, 129(44), 13390-13391. https://doi.org/10.1021/ja075988c

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abstract = "Well-ordered two-component nanoparticle (NP) patterns are generated on hydrophobic surfaces from mixed particle suspensions of very low volume fraction by simple drop-casting and self-assembly during solvent evaporation. A range of NP sizes (520-60 nm), volume fractions, and particle chemistries (aminated, carboxylated, sulfated) are tested, and in all cases, hexagonally packed patterns of the larger NP interdispersed with the smaller NP are obtained. The mechanism for formation appears to be entropically driven since the pattern formation occurs over a wide pH range (4-10) and is thus independent of particle surface charge. The nanopatterns show promise as model systems for studying interfacial phenomena such as protein adsorption and cell adhesion.",

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AU - Mukhopadhyay, Rupa

AU - Al-Hanbali, Othman

AU - Pillai, Saju

AU - Hemmersam, Anne Gry

AU - Meyer, Rikke Louise

AU - Hunter, Alan Christy

AU - Rutt, Kenneth John

AU - Besenbacher, Flemming

AU - Moghimi, Seyed Moein

AU - Kingshott, Peter

PY - 2007/11/7

Y1 - 2007/11/7

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AB - Well-ordered two-component nanoparticle (NP) patterns are generated on hydrophobic surfaces from mixed particle suspensions of very low volume fraction by simple drop-casting and self-assembly during solvent evaporation. A range of NP sizes (520-60 nm), volume fractions, and particle chemistries (aminated, carboxylated, sulfated) are tested, and in all cases, hexagonally packed patterns of the larger NP interdispersed with the smaller NP are obtained. The mechanism for formation appears to be entropically driven since the pattern formation occurs over a wide pH range (4-10) and is thus independent of particle surface charge. The nanopatterns show promise as model systems for studying interfacial phenomena such as protein adsorption and cell adhesion.

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Ordering of binary polymeric nanoparticles on hydrophobic surfaces assembled from low volume fraction dispersions

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