Advanced Functional Materials, volume 31, issue 7, pages 2007493
Two‐Photon Laser‐Written Photoalignment Layers for Patterning Liquid Crystalline Conjugated Polymer Orientation
Shi Yuping
1
,
Salter Patrick S.
1
,
Li Mo
2
,
Taylor Robert A
2
,
Elston Steve J.
1
,
Morris Stephen M.
1
,
Bradley Donal
2, 3
Publication type: Journal Article
Publication date: 2020-11-30
Journal:
Advanced Functional Materials
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor: 19
ISSN: 1616301X
Electronic, Optical and Magnetic Materials
Electrochemistry
Condensed Matter Physics
Biomaterials
Abstract
Systematic tuning of chemical and physical structure allows fine control over desired electronic and optical properties, including those of conjugated polymer semiconductors. In the case of physical structure, orientation via liquid crystalline alignment allows access to fundamental optical anisotropies and the associated refractive index modification offers great potential for fabrication of photonic structures. In this paper, photoalignment is used to orient the liquid crystalline conjugated polymer poly(9,9‐dioctylfluorene‐co‐benzothiadiazole) (F8BT), specifically involving two‐photon infrared laser writing of patterns in an azobenzene sulphonic dye (SD1). These patterns are transferred into the overlying film by thermotropic orientation in the nematic melt, then frozen in place by quenching to a room temperature nematic glass. Optimization of laser power and scan speed allows features with linewidths ≤ 1 µm. Photoluminescence (PL) peak anisotropy values reach PLII/PL⊥ = 13 for laser writing, compared with PLII/PL⊥ = 9 for polarized ultraviolet light emitting diode exposure of the same SD1 layer. These two approaches also result in different film microstructures; evidenced by characteristic changes in PL spectra. The anisotropic PL spectra provide information on emissive excited states that complements previous studies on non‐oriented F8BT and related copolymers, also suggesting two emissive states.
Citations by journals
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1
2
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Advanced Functional Materials
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Advanced Functional Materials
2 publications, 16.67%
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Advanced Materials Technologies
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Advanced Materials Technologies
2 publications, 16.67%
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Advanced Optical Materials
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Advanced Optical Materials
2 publications, 16.67%
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Macromolecules
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Macromolecules
1 publication, 8.33%
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Micromachines
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Micromachines
1 publication, 8.33%
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Dyes and Pigments
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Dyes and Pigments
1 publication, 8.33%
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Optics Express
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Optics Express
1 publication, 8.33%
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Liquid Crystals
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Liquid Crystals
1 publication, 8.33%
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1
2
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Citations by publishers
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1
2
3
4
5
6
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Wiley
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Wiley
6 publications, 50%
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American Chemical Society (ACS)
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American Chemical Society (ACS)
1 publication, 8.33%
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Multidisciplinary Digital Publishing Institute (MDPI)
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Multidisciplinary Digital Publishing Institute (MDPI)
1 publication, 8.33%
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Elsevier
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Elsevier
1 publication, 8.33%
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Optical Society of America
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Optical Society of America
1 publication, 8.33%
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Taylor & Francis
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Taylor & Francis
1 publication, 8.33%
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1
2
3
4
5
6
|
- We do not take into account publications that without a DOI.
- Statistics recalculated only for publications connected to researchers, organizations and labs registered on the platform.
- Statistics recalculated weekly.
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Shi Y. et al. Two‐Photon Laser‐Written Photoalignment Layers for Patterning Liquid Crystalline Conjugated Polymer Orientation // Advanced Functional Materials. 2020. Vol. 31. No. 7. p. 2007493.
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Shi Y., Salter P. S., Li M., Taylor R. A., Elston S. J., Morris S. M., Bradley D. Two‐Photon Laser‐Written Photoalignment Layers for Patterning Liquid Crystalline Conjugated Polymer Orientation // Advanced Functional Materials. 2020. Vol. 31. No. 7. p. 2007493.
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TY - JOUR
DO - 10.1002/adfm.202007493
UR - https://doi.org/10.1002%2Fadfm.202007493
TI - Two‐Photon Laser‐Written Photoalignment Layers for Patterning Liquid Crystalline Conjugated Polymer Orientation
T2 - Advanced Functional Materials
AU - Shi, Yuping
AU - Morris, Stephen M.
AU - Salter, Patrick S.
AU - Li, Mo
AU - Taylor, Robert A
AU - Elston, Steve J.
AU - Bradley, Donal
PY - 2020
DA - 2020/11/30 00:00:00
PB - Wiley
SP - 2007493
IS - 7
VL - 31
SN - 1616-301X
ER -
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@article{2020_Shi,
author = {Yuping Shi and Stephen M. Morris and Patrick S. Salter and Mo Li and Robert A Taylor and Steve J. Elston and Donal Bradley},
title = {Two‐Photon Laser‐Written Photoalignment Layers for Patterning Liquid Crystalline Conjugated Polymer Orientation},
journal = {Advanced Functional Materials},
year = {2020},
volume = {31},
publisher = {Wiley},
month = {nov},
url = {https://doi.org/10.1002%2Fadfm.202007493},
number = {7},
pages = {2007493},
doi = {10.1002/adfm.202007493}
}
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Shi, Yuping, et al. “Two‐Photon Laser‐Written Photoalignment Layers for Patterning Liquid Crystalline Conjugated Polymer Orientation.” Advanced Functional Materials, vol. 31, no. 7, Nov. 2020, p. 2007493. https://doi.org/10.1002%2Fadfm.202007493.