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Your search keyword '"lyotropic liquid-crystalline phase"' showing total 2 results
Start Over Descriptor "lyotropic liquid-crystalline phase" Publisher elsevier
2 results on '"lyotropic liquid-crystalline phase"'

1. Influence of backbone structure on orientation of conjugated polymers in the dynamic casting of thin floating-films

Author

Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, Research Center for Advanced Eco-fitting Technology, Kyushu Institute of Technology, Department of Computer Science and Electronics, Kyushu Institute of Technology, Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, Research Center for Advanced Eco-fitting Technology, Kyushu Institute of Technology, Pandey, Manish, Pandey, Shyam S., Nagamatsu, Shuichi, Hayase, Shuzi, Takashima, Wataru, Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, Research Center for Advanced Eco-fitting Technology, Kyushu Institute of Technology, Department of Computer Science and Electronics, Kyushu Institute of Technology, Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, Research Center for Advanced Eco-fitting Technology, Kyushu Institute of Technology, Pandey, Manish, Pandey, Shyam S., Nagamatsu, Shuichi, Hayase, Shuzi, and Takashima, Wataru

Abstract

type:Journal Article, Dynamic casting of conjugated polymer films on liquid-substrate is a unique method which provides thin floating-film and can be easily transferred on a desired substrate by stamping. The important feature in this procedure is associated with the formation of thin polymeric film during compression and solidification controlled by viscous drag of liquid substrate and solvent evaporation of the polymer, respectively. Lyotropic liquid-crystalline (LC) characteristics of conjugated polymer possibly assist to orient the polymer chain in one direction. It is found that this method produce highly oriented thin films (dichroic ratio > 5) of thiophene-based conjugated polymers such as PBTTT-C14, PQT-C12 and non-regiocontrolled poly(3-hexylthiophene) NR-P3HT. On the other hand, weak orientation intensity in regioregular poly(3-hexylthiophene) RR-P3HT was found. The mechanism for this diverse orientation in thiophene-based conjugated polymers is discussed in correlation with the backbone chemical structure and lyotropic LC phase transition during the floating-film formation.

Published
2019

2. Influence of backbone structure on orientation of conjugated polymers in the dynamic casting of thin floating-films

Author

Shyam S. Pandey, Manish Pandey, Wataru Takashima, Shuzi Hayase, and Shuichi Nagamatsu

Subjects
Phase transition, Materials science, 02 engineering and technology, Substrate (electronics), Conjugated system, 010402 general chemistry, 01 natural sciences, chemistry.chemical_compound, Polymer chemistry, Lyotropic, Materials Chemistry, Thiophene, Lyotropic liquid-crystalline phase, Polarized spectra, Thin film, Floating-film, chemistry.chemical_classification, Conjugated polymer, Metals and Alloys, Surfaces and Interfaces, Polymer, 021001 nanoscience & nanotechnology, Casting, Molecular orientation, 0104 chemical sciences, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, chemistry, Chemical engineering, 0210 nano-technology
Abstract

Dynamic casting of conjugated polymer films on liquid-substrate is a unique method which provides thin floating-film and can be easily transferred on a desired substrate by stamping. The important feature in this procedure is associated with the formation of thin polymeric film during compression and solidification controlled by viscous drag of liquid substrate and solvent evaporation of the polymer, respectively. Lyotropic liquid-crystalline (LC) characteristics of conjugated polymer possibly assist to orient the polymer chain in one direction. It is found that this method produce highly oriented thin films (dichroic ratio > 5) of thiophene-based conjugated polymers such as PBTTT-C14, PQT-C12 and non-regiocontrolled poly(3-hexylthiophene) NR-P3HT. On the other hand, weak orientation intensity in regioregular poly(3-hexylthiophene) RR-P3HT was found. The mechanism for this diverse orientation in thiophene-based conjugated polymers is discussed in correlation with the backbone chemical structure and lyotropic LC phase transition during the floating-film formation.

Published
2016

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