Temperature Activated Diffusion of Radicals through Ion Implanted Polymers

Research output: Contribution to journalJournal articleResearchpeer-review

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Temperature Activated Diffusion of Radicals through Ion Implanted Polymers. / Wakelin, Edgar A.; Davies, Michael J.; Bilek, Marcela M. M.; McKenzie, David R.

In: A C S Applied Materials and Interfaces, Vol. 7, No. 47, 02.12.2015, p. 26340-26345.

Research output: Contribution to journalJournal articleResearchpeer-review

Harvard

Wakelin, EA, Davies, MJ, Bilek, MMM & McKenzie, DR 2015, 'Temperature Activated Diffusion of Radicals through Ion Implanted Polymers', A C S Applied Materials and Interfaces, vol. 7, no. 47, pp. 26340-26345. https://doi.org/10.1021/acsami.5b09519

APA

Wakelin, E. A., Davies, M. J., Bilek, M. M. M., & McKenzie, D. R. (2015). Temperature Activated Diffusion of Radicals through Ion Implanted Polymers. A C S Applied Materials and Interfaces, 7(47), 26340-26345. https://doi.org/10.1021/acsami.5b09519

Vancouver

Wakelin EA, Davies MJ, Bilek MMM, McKenzie DR. Temperature Activated Diffusion of Radicals through Ion Implanted Polymers. A C S Applied Materials and Interfaces. 2015 Dec 2;7(47):26340-26345. https://doi.org/10.1021/acsami.5b09519

Author

Wakelin, Edgar A. ; Davies, Michael J. ; Bilek, Marcela M. M. ; McKenzie, David R. / Temperature Activated Diffusion of Radicals through Ion Implanted Polymers. In: A C S Applied Materials and Interfaces. 2015 ; Vol. 7, No. 47. pp. 26340-26345.

Bibtex

@article{53908b35554c423c8a5aaf12d43e2630,
title = "Temperature Activated Diffusion of Radicals through Ion Implanted Polymers",
abstract = "Plasma immersion ion implantation (PIII) is a promising technique for immobilizing biomolecules on the surface of polymers. Radicals generated in a subsurface layer by PIII treatment diffuse throughout the substrate, forming covalent bonds to molecules when they reach the surface. Understanding and controlling the diffusion of radicals through this layer will enable efficient optimization of this technique. We develop a model based on site to site diffusion according to Fick's second law with temperature activation according to the Arrhenius relation. Using our model, the Arrhenius exponential prefactor (for barrierless diffusion), D0, and activation energy, EA, for a radical to diffuse from one position to another are found to be 3.11 × 10-17 m2 s-1 and 0.31 eV, respectively. The model fits experimental data with a high degree of accuracy and allows for accurate prediction of radical diffusion to the surface. The model makes useful predictions for the lifetime over which the surface is sufficiently active to covalently immobilize biomolecules and it can be used to determine radical fluence during biomolecule incubation for a range of storage and incubation temperatures so facilitating selection of the most appropriate parameters.",
author = "Wakelin, {Edgar A.} and Davies, {Michael J.} and Bilek, {Marcela M. M.} and McKenzie, {David R.}",
year = "2015",
month = "12",
day = "2",
doi = "10.1021/acsami.5b09519",
language = "English",
volume = "7",
pages = "26340--26345",
journal = "A C S Applied Materials and Interfaces",
issn = "1944-8244",
publisher = "American Chemical Society",
number = "47",

}

RIS

TY - JOUR

T1 - Temperature Activated Diffusion of Radicals through Ion Implanted Polymers

AU - Wakelin, Edgar A.

AU - Davies, Michael J.

AU - Bilek, Marcela M. M.

AU - McKenzie, David R.

PY - 2015/12/2

Y1 - 2015/12/2

N2 - Plasma immersion ion implantation (PIII) is a promising technique for immobilizing biomolecules on the surface of polymers. Radicals generated in a subsurface layer by PIII treatment diffuse throughout the substrate, forming covalent bonds to molecules when they reach the surface. Understanding and controlling the diffusion of radicals through this layer will enable efficient optimization of this technique. We develop a model based on site to site diffusion according to Fick's second law with temperature activation according to the Arrhenius relation. Using our model, the Arrhenius exponential prefactor (for barrierless diffusion), D0, and activation energy, EA, for a radical to diffuse from one position to another are found to be 3.11 × 10-17 m2 s-1 and 0.31 eV, respectively. The model fits experimental data with a high degree of accuracy and allows for accurate prediction of radical diffusion to the surface. The model makes useful predictions for the lifetime over which the surface is sufficiently active to covalently immobilize biomolecules and it can be used to determine radical fluence during biomolecule incubation for a range of storage and incubation temperatures so facilitating selection of the most appropriate parameters.

AB - Plasma immersion ion implantation (PIII) is a promising technique for immobilizing biomolecules on the surface of polymers. Radicals generated in a subsurface layer by PIII treatment diffuse throughout the substrate, forming covalent bonds to molecules when they reach the surface. Understanding and controlling the diffusion of radicals through this layer will enable efficient optimization of this technique. We develop a model based on site to site diffusion according to Fick's second law with temperature activation according to the Arrhenius relation. Using our model, the Arrhenius exponential prefactor (for barrierless diffusion), D0, and activation energy, EA, for a radical to diffuse from one position to another are found to be 3.11 × 10-17 m2 s-1 and 0.31 eV, respectively. The model fits experimental data with a high degree of accuracy and allows for accurate prediction of radical diffusion to the surface. The model makes useful predictions for the lifetime over which the surface is sufficiently active to covalently immobilize biomolecules and it can be used to determine radical fluence during biomolecule incubation for a range of storage and incubation temperatures so facilitating selection of the most appropriate parameters.

U2 - 10.1021/acsami.5b09519

DO - 10.1021/acsami.5b09519

M3 - Journal article

C2 - 26562064

VL - 7

SP - 26340

EP - 26345

JO - A C S Applied Materials and Interfaces

JF - A C S Applied Materials and Interfaces

SN - 1944-8244

IS - 47

ER -

ID: 152247027