DOI: 10.1021/jp013931l. Size-Selective Dispersion of Dodecanethiol-Coated Nanocrystals in Liquid and Supercritical Ethane by Density Tuning

Size-Selective Dispersion of Dodecanethiol-Coated Nanocrystals in Liquid and Supercritical Ethane by Density Tuning

10.1021/jp013931l

Crossref journal-article

American Chemical Society (ACS)

The Journal of Physical Chemistry B (316)

Bibliography

Shah, P. S., Holmes, J. D., Johnston, K. P., & Korgel, B. A. (2002). Size-Selective Dispersion of Dodecanethiol-Coated Nanocrystals in Liquid and Supercritical Ethane by Density Tuning. The Journal of Physical Chemistry B, 106(10), 2545â2551.

Authors 4

Parag S. Shah (first)
Justin D. Holmes (additional)
Keith P. Johnston (additional)
Brian A. Korgel (additional)

References 34 Referenced 110

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Kreibig, U.; Fragstein, C. V.Z. Physik1969,22, 307−323: The most accurate method to determine the Hamaker constant for metal nanocrystals requires evaluating the dielectric constant of the material at imaginary frequencies [ε(iν)]. On the basis of a Kramers−Kronig relationship and through simplification using the Drude model, the dielectric constant along the imaginary frequencies can be rewritten as: ε(iν) ≈ 1 +ωp2/[ω(ω+ωτ)]. In this caseωpis the plasmon frequency andωτis the collision frequency. As nanocrystals shrink to dimensions below the free electron path length (520 Å for silver), the increase in collision frequency will decreaseε(iν) resulting in an overall decrease in the total Hamaker constant.
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Dates

Type	When
Created	23 years, 1 month ago (July 26, 2002, 12:49 a.m.)
Deposited	3 years, 10 months ago (Oct. 5, 2021, 1:07 a.m.)
Indexed	3 months, 3 weeks ago (May 5, 2025, 5:04 p.m.)
Issued	23 years, 6 months ago (Feb. 16, 2002)
Published	23 years, 6 months ago (Feb. 16, 2002)
Published Online	23 years, 6 months ago (Feb. 16, 2002)
Published Print	23 years, 6 months ago (March 1, 2002)

Funders 0

None

BibTeX

@article{Shah_2002, title={Size-Selective Dispersion of Dodecanethiol-Coated Nanocrystals in Liquid and Supercritical Ethane by Density Tuning}, volume={106}, ISSN={1520-5207}, url={http://dx.doi.org/10.1021/jp013931l}, DOI={10.1021/jp013931l}, number={10}, journal={The Journal of Physical Chemistry B}, publisher={American Chemical Society (ACS)}, author={Shah, Parag S. and Holmes, Justin D. and Johnston, Keith P. and Korgel, Brian A.}, year={2002}, month=feb, pages={2545–2551} }

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      "unstructured": "Kreibig, U.; Fragstein, C. V.Z. Physik1969,22, 307\u2212323:\u2009 The most accurate method to determine the Hamaker constant for metal nanocrystals requires evaluating the dielectric constant of the material at imaginary frequencies [\u03b5(i\u03bd)]. On the basis of a Kramers\u2212Kronig relationship and through simplification using the Drude model, the dielectric constant along the imaginary frequencies can be rewritten as:\u2009\u03b5(i\u03bd) \u2248 1 +\u03c9p2/[\u03c9(\u03c9+\u03c9\u03c4)]. In this case\u03c9pis the plasmon frequency and\u03c9\u03c4is the collision frequency. As nanocrystals shrink to dimensions below the free electron path length (520 \u00c5 for silver), the increase in collision frequency will decrease\u03b5(i\u03bd) resulting in an overall decrease in the total Hamaker constant."
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