Directed phase separation of PFO: PS blends during spin-coating using feedback controlled in situ stroboscopic fluorescence microscopy
Daniel T.W. Toolan, Andrew J. Parnell, Paul D. Topham, Jonathan R. Howse*
Chemical Engineering & Applied Chemistry
Uniform thin-films of polymer blends can be produced through spin-coating, which is used on an industrial scale for the production of light emitting diodes, and more recently organic photovoltaic devices. Here, we present the results of the direct observation, and control, over the phase separation of polystyrene and poly(9,9′-dioctylfluorene) during spin-coating using high speed stroboscopic fluorescence microscopy. This new approach, imaging the fluorescence, from a blend of fluorescent + non-fluorescent polymers allows for intensity to be directly mapped to composition, providing a direct determination of composition fluctuations during the spin-coating process. We have studied the compositional development and corresponding structural development for a range of compositions, which produce a range of different phase separated morphologies. We initially observe domains formed by spinodal decomposition, coarsening via Ostwald Ripening until an interfacial instability causes break-up of the bicontinuous morphology. Ostwald ripening continues, and depending upon composition a bicontinuous morphology is re-established. By observing compositional and morphological development in real-time, we are able to direct and control morphological structure development through control of the spin coating parameters via in situ feedback.
https://doi.org/10.1039/c3ta01530k
10.1039/c3ta01530k
http://pubs.rsc.org/en/Content/ArticleLanding/2013/TA/c3ta01530k#!divAbstract
Dive into the research topics of 'Directed phase separation of PFO: PS blends during spin-coating using feedback controlled in situ stroboscopic fluorescence microscopy'. Together they form a unique fingerprint.
Spin coating Engineering & Materials Science 100%
Fluorescence microscopy Engineering & Materials Science 99%
Phase separation Engineering & Materials Science 86%
Spin Coating Chemistry 70%
Fluorescence Microscopy Chemistry 68%
Phase Separation Chemistry 58%
Ostwald ripening Engineering & Materials Science 57%
Toolan, D. T. W., Parnell, A. J., Topham, P. D., & Howse, J. R. (2013). Directed phase separation of PFO: PS blends during spin-coating using feedback controlled in situ stroboscopic fluorescence microscopy. Journal of Materials Chemistry A, 1(11), 3587-3592. https://doi.org/10.1039/c3ta01530k
Toolan, Daniel T.W. ; Parnell, Andrew J. ; Topham, Paul D. et al. / Directed phase separation of PFO : PS blends during spin-coating using feedback controlled in situ stroboscopic fluorescence microscopy. In: Journal of Materials Chemistry A. 2013 ; Vol. 1, No. 11. pp. 3587-3592.
@article{6e65a381170e49a3a4785799ca036232,
title = "Directed phase separation of PFO: PS blends during spin-coating using feedback controlled in situ stroboscopic fluorescence microscopy",
abstract = "Uniform thin-films of polymer blends can be produced through spin-coating, which is used on an industrial scale for the production of light emitting diodes, and more recently organic photovoltaic devices. Here, we present the results of the direct observation, and control, over the phase separation of polystyrene and poly(9,9′-dioctylfluorene) during spin-coating using high speed stroboscopic fluorescence microscopy. This new approach, imaging the fluorescence, from a blend of fluorescent + non-fluorescent polymers allows for intensity to be directly mapped to composition, providing a direct determination of composition fluctuations during the spin-coating process. We have studied the compositional development and corresponding structural development for a range of compositions, which produce a range of different phase separated morphologies. We initially observe domains formed by spinodal decomposition, coarsening via Ostwald Ripening until an interfacial instability causes break-up of the bicontinuous morphology. Ostwald ripening continues, and depending upon composition a bicontinuous morphology is re-established. By observing compositional and morphological development in real-time, we are able to direct and control morphological structure development through control of the spin coating parameters via in situ feedback.",
author = "Toolan, {Daniel T.W.} and Parnell, {Andrew J.} and Topham, {Paul D.} and Howse, {Jonathan R.}",
doi = "10.1039/c3ta01530k",
journal = "Journal of Materials Chemistry A",
publisher = "Royal Society of Chemistry",
Toolan, DTW, Parnell, AJ, Topham, PD & Howse, JR 2013, 'Directed phase separation of PFO: PS blends during spin-coating using feedback controlled in situ stroboscopic fluorescence microscopy', Journal of Materials Chemistry A, vol. 1, no. 11, pp. 3587-3592. https://doi.org/10.1039/c3ta01530k
Directed phase separation of PFO : PS blends during spin-coating using feedback controlled in situ stroboscopic fluorescence microscopy. / Toolan, Daniel T.W.; Parnell, Andrew J.; Topham, Paul D. et al.
In: Journal of Materials Chemistry A, Vol. 1, No. 11, 21.03.2013, p. 3587-3592.
T1 - Directed phase separation of PFO
T2 - PS blends during spin-coating using feedback controlled in situ stroboscopic fluorescence microscopy
AU - Toolan, Daniel T.W.
AU - Parnell, Andrew J.
AU - Topham, Paul D.
AU - Howse, Jonathan R.
N2 - Uniform thin-films of polymer blends can be produced through spin-coating, which is used on an industrial scale for the production of light emitting diodes, and more recently organic photovoltaic devices. Here, we present the results of the direct observation, and control, over the phase separation of polystyrene and poly(9,9′-dioctylfluorene) during spin-coating using high speed stroboscopic fluorescence microscopy. This new approach, imaging the fluorescence, from a blend of fluorescent + non-fluorescent polymers allows for intensity to be directly mapped to composition, providing a direct determination of composition fluctuations during the spin-coating process. We have studied the compositional development and corresponding structural development for a range of compositions, which produce a range of different phase separated morphologies. We initially observe domains formed by spinodal decomposition, coarsening via Ostwald Ripening until an interfacial instability causes break-up of the bicontinuous morphology. Ostwald ripening continues, and depending upon composition a bicontinuous morphology is re-established. By observing compositional and morphological development in real-time, we are able to direct and control morphological structure development through control of the spin coating parameters via in situ feedback.
AB - Uniform thin-films of polymer blends can be produced through spin-coating, which is used on an industrial scale for the production of light emitting diodes, and more recently organic photovoltaic devices. Here, we present the results of the direct observation, and control, over the phase separation of polystyrene and poly(9,9′-dioctylfluorene) during spin-coating using high speed stroboscopic fluorescence microscopy. This new approach, imaging the fluorescence, from a blend of fluorescent + non-fluorescent polymers allows for intensity to be directly mapped to composition, providing a direct determination of composition fluctuations during the spin-coating process. We have studied the compositional development and corresponding structural development for a range of compositions, which produce a range of different phase separated morphologies. We initially observe domains formed by spinodal decomposition, coarsening via Ostwald Ripening until an interfacial instability causes break-up of the bicontinuous morphology. Ostwald ripening continues, and depending upon composition a bicontinuous morphology is re-established. By observing compositional and morphological development in real-time, we are able to direct and control morphological structure development through control of the spin coating parameters via in situ feedback.
UR - http://pubs.rsc.org/en/Content/ArticleLanding/2013/TA/c3ta01530k#!divAbstract
U2 - 10.1039/c3ta01530k
DO - 10.1039/c3ta01530k
JO - Journal of Materials Chemistry A
JF - Journal of Materials Chemistry A
Toolan DTW, Parnell AJ, Topham PD, Howse JR. Directed phase separation of PFO: PS blends during spin-coating using feedback controlled in situ stroboscopic fluorescence microscopy. Journal of Materials Chemistry A. 2013 Mar 21;1(11):3587-3592. Epub 2013 Jan 22. doi: 10.1039/c3ta01530k