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Title: Thermoreversible Morphology and Conductivity of a Conjugated Polymer Network Embedded in Block Copolymer Self-Assemblies

Authors:
 [1];  [2];  [3];  [4];  [5];  [2];  [6];  [4];  [1];  [1]
  1. Biology and Soft Matter Division, Neutron Sciences Directorate, Oak Ridge National Laboratory, Oak Ridge TN 37831 USA
  2. Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge TN 37831 USA; Computer Science and Mathematics Division, Oak Ridge National Laboratory, Oak Ridge TN 37831 USA
  3. Biology and Soft Matter Division, Neutron Sciences Directorate, Oak Ridge National Laboratory, Oak Ridge TN 37831 USA; Forschungszentrum Jülich, Jülich Center for Neutron Science, Jülich NRW 52425 Germany
  4. Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge TN 37831 USA
  5. Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge TN 37831 USA
  6. Forschungszentrum Jülich, Jülich Center for Neutron Science, Jülich NRW 52425 Germany
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Org.:
DOE - BASIC ENERGY SCIENCES
OSTI Identifier:
1326086
Resource Type:
Journal Article
Resource Relation:
Journal Name: Small; Journal Volume: 12; Journal Issue: 35
Country of Publication:
United States
Language:
ENGLISH

Citation Formats

Han, Youngkyu, Carrillo, Jan-Michael Y., Zhang, Zhe, Li, Yunchao, Hong, Kunlun, Sumpter, Bobby G., Ohl, Michael, Paranthaman, Mariappan Parans, Smith, Gregory S., and Do, Changwoo. Thermoreversible Morphology and Conductivity of a Conjugated Polymer Network Embedded in Block Copolymer Self-Assemblies. United States: N. p., 2016. Web. doi:10.1002/smll.201601342.
Han, Youngkyu, Carrillo, Jan-Michael Y., Zhang, Zhe, Li, Yunchao, Hong, Kunlun, Sumpter, Bobby G., Ohl, Michael, Paranthaman, Mariappan Parans, Smith, Gregory S., & Do, Changwoo. Thermoreversible Morphology and Conductivity of a Conjugated Polymer Network Embedded in Block Copolymer Self-Assemblies. United States. doi:10.1002/smll.201601342.
Han, Youngkyu, Carrillo, Jan-Michael Y., Zhang, Zhe, Li, Yunchao, Hong, Kunlun, Sumpter, Bobby G., Ohl, Michael, Paranthaman, Mariappan Parans, Smith, Gregory S., and Do, Changwoo. Tue . "Thermoreversible Morphology and Conductivity of a Conjugated Polymer Network Embedded in Block Copolymer Self-Assemblies". United States. doi:10.1002/smll.201601342.
@article{osti_1326086,
title = {Thermoreversible Morphology and Conductivity of a Conjugated Polymer Network Embedded in Block Copolymer Self-Assemblies},
author = {Han, Youngkyu and Carrillo, Jan-Michael Y. and Zhang, Zhe and Li, Yunchao and Hong, Kunlun and Sumpter, Bobby G. and Ohl, Michael and Paranthaman, Mariappan Parans and Smith, Gregory S. and Do, Changwoo},
abstractNote = {},
doi = {10.1002/smll.201601342},
journal = {Small},
number = 35,
volume = 12,
place = {United States},
year = {Tue Jul 19 00:00:00 EDT 2016},
month = {Tue Jul 19 00:00:00 EDT 2016}
}
  • Self-assembly of block copolymers provides numerous opportunities to create functional materials, utilizing self-assembled microdomains with a variety of morphology and periodic architectures as templates for functional nanofillers. Here new progress is reported toward the fabrication of thermally responsive and electrically conductive polymeric self-assemblies made from a water-soluble poly(thiophene) derivative with short poly(ethylene oxide) side chains and Pluronic L62 block copolymer solution in water. The structural and electrical properties of conjugated polymer-embedded self-assembled architectures are investigated by combining small-angle neutron and X-ray scattering, coarse-grained molecular dynamics simulations, and impedance spectroscopy. The L62 solution template organizes the conjugated polymers by stably incorporatingmore » them into the hydrophilic domains thus inhibiting aggregation. The changing morphology of L62 during the micellarto- lamellar phase transition defines the embedded conjugated polymer network. As a result, the conductivity is strongly coupled to the structural change of the templating L62 phase and exhibits thermally reversible behavior with no signs of quenching of the conductivity at high temperature. In conclusion, this study shows promise for enabling more flexibility in processing and utilizing water-soluble conjugated polymers in aqueous solutions for self-assembly based fabrication of stimuli-responsive nanostructures and sensory materials.« less
  • Conjugated block copolymers provide a pathway to achieve thermally stable nanostructured thin films for organic solar cells. We characterized the structural evolution of poly(3-hexylthiophene)- block-poly(diketopyrrolopyrrole–terthiophene) (P3HT- b-DPPT-T) from solution to nanostructured thin films. Aggregation of the DPPT-T block of P3HT- b-DPPT-T was found in solution by small-angle X-ray scattering with the P3HT block remaining well-solvated. The nanostructure in thin films was determined using a combination of wide and small-angle X-ray scattering techniques as a function of processing conditions. The structure in solution controlled the initial nanostructure in spin-cast thin films, allowing subsequent thermal annealing processes to further improve the ordering.more » In contrast to the results for thin films, nanostructural ordering was not observed in the bulk samples by small-angle X-ray scattering. Finally, these results suggest the importance of controlling solvent induced aggregation in forming nanostructured thin films of conjugated block copolymers.« less
  • Conjugated block copolymers provide a pathway to achieve thermally stable nanostructured thin films for organic solar cells. We characterized the structural evolution of poly(3-hexylthiophene)- block-poly(diketopyrrolopyrrole–terthiophene) (P3HT- b-DPPT-T) from solution to nanostructured thin films. Aggregation of the DPPT-T block of P3HT- b-DPPT-T was found in solution by small-angle X-ray scattering with the P3HT block remaining well-solvated. The nanostructure in thin films was determined using a combination of wide and small-angle X-ray scattering techniques as a function of processing conditions. The structure in solution controlled the initial nanostructure in spin-cast thin films, allowing subsequent thermal annealing processes to further improve the ordering.more » In contrast to the results for thin films, nanostructural ordering was not observed in the bulk samples by small-angle X-ray scattering. Finally, these results suggest the importance of controlling solvent induced aggregation in forming nanostructured thin films of conjugated block copolymers.« less
  • Mesogeometric anatomy – 2D inter-material surfaces and 1D skeletons – extracted from triply-periodic, double-gyroid network assembled from triblock copolymers.