Abstract
We report on the facile preparation of highly scattering metal-coated polystyrene (PS) latex beads by using solvent-controlled heterocoagulation. Starting with an aqueous dispersion of PS beads and poly(vinyl pyrrolidone)-capped metal nanoparticles (NPs), homogeneous and dense metal coatings were obtained by the controlled addition and removal of tetrahydrofuran (THF). Different sizes (30, 60, and 80 nm), chemistries (gold and silver), and shapes (sphere and cube) of NPs were successfully incorporated on commercially available PS beads. The resulting metal coated-PS microspheres exhibited highly enhanced scattering and tunable optical characteristics useful for biomedical imaging, sensors, and opto-electronic devices. The fabricated composite beads were stable, with no loss of metal coating, during long-term water storage. The morphology and coverage of the metal coating, and the bead's optical properties, were controllable over a wide range by the concentration of THF and metal NP, and NP size, shape, and chemistry.
| Original language | English |
|---|---|
| Pages (from-to) | 5048-5049 |
| Number of pages | 2 |
| Journal | Journal of the American Chemical Society |
| Volume | 131 |
| Issue number | 14 |
| DOIs | |
| Publication status | Published - 2009 Apr 15 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Chemistry(all)
- Catalysis
- Biochemistry
- Colloid and Surface Chemistry
Cite this
Facile preparation of highly-scattering metal nanoparticle-coated polymer microbeads and their surface plasmon resonance. / Lee, Jung-hyun; Mahmoud, Mahmoud A.; Sitterle, Valerie; Sitterle, Jeffrey; Meredith, J. Carson.
In: Journal of the American Chemical Society, Vol. 131, No. 14, 15.04.2009, p. 5048-5049.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Facile preparation of highly-scattering metal nanoparticle-coated polymer microbeads and their surface plasmon resonance
AU - Lee, Jung-hyun
AU - Mahmoud, Mahmoud A.
AU - Sitterle, Valerie
AU - Sitterle, Jeffrey
AU - Meredith, J. Carson
PY - 2009/4/15
Y1 - 2009/4/15
N2 - We report on the facile preparation of highly scattering metal-coated polystyrene (PS) latex beads by using solvent-controlled heterocoagulation. Starting with an aqueous dispersion of PS beads and poly(vinyl pyrrolidone)-capped metal nanoparticles (NPs), homogeneous and dense metal coatings were obtained by the controlled addition and removal of tetrahydrofuran (THF). Different sizes (30, 60, and 80 nm), chemistries (gold and silver), and shapes (sphere and cube) of NPs were successfully incorporated on commercially available PS beads. The resulting metal coated-PS microspheres exhibited highly enhanced scattering and tunable optical characteristics useful for biomedical imaging, sensors, and opto-electronic devices. The fabricated composite beads were stable, with no loss of metal coating, during long-term water storage. The morphology and coverage of the metal coating, and the bead's optical properties, were controllable over a wide range by the concentration of THF and metal NP, and NP size, shape, and chemistry.
AB - We report on the facile preparation of highly scattering metal-coated polystyrene (PS) latex beads by using solvent-controlled heterocoagulation. Starting with an aqueous dispersion of PS beads and poly(vinyl pyrrolidone)-capped metal nanoparticles (NPs), homogeneous and dense metal coatings were obtained by the controlled addition and removal of tetrahydrofuran (THF). Different sizes (30, 60, and 80 nm), chemistries (gold and silver), and shapes (sphere and cube) of NPs were successfully incorporated on commercially available PS beads. The resulting metal coated-PS microspheres exhibited highly enhanced scattering and tunable optical characteristics useful for biomedical imaging, sensors, and opto-electronic devices. The fabricated composite beads were stable, with no loss of metal coating, during long-term water storage. The morphology and coverage of the metal coating, and the bead's optical properties, were controllable over a wide range by the concentration of THF and metal NP, and NP size, shape, and chemistry.
UR - http://www.scopus.com/inward/record.url?scp=67949121789&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=67949121789&partnerID=8YFLogxK
U2 - 10.1021/ja900698w
DO - 10.1021/ja900698w
M3 - Article
C2 - 19317467
AN - SCOPUS:67949121789
VL - 131
SP - 5048
EP - 5049
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
SN - 0002-7863
IS - 14
ER -