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Preparation of Nanoporous Poly(3-hexylthiophene) Films Based on a Template System of Block Copolymers via Ionic Interaction.

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Title: Preparation of Nanoporous Poly(3-hexylthiophene) Films Based on a Template System of Block Copolymers via Ionic Interaction.
Authors: Ayumi Takahashi1, Yecheol Rho1, Tomoya Higashihara1, Byungcheol Ahn1, Moonhor Ree1, Mitsuru Ueda1
Source: Macromolecules. Jun2010, Vol. 43 Issue 11, p4843-4852. 10p.
Subject Terms: *NANOSTRUCTURED materials, *POROUS materials, *BLOCK copolymers, *POLYSTYRENE, *METATHESIS reactions, *POLYMERIZATION, *CALORIMETRY, *ELECTRON microscopy
Abstract: A series of well-defined aniline-chain-end-functionalized regioregular poly(3-hexylthiophene)s (P3HT−NH2) and sulfo-chain-end-functionalized polystyrene (PS−SO3H) have been prepared based on quasi-living Grignard metathesis and living anionic polymerization, respectively. Block copolymers via ionic interaction, (P3HT−NH3)-b-(PS−SO3−)s, were successfully synthesized, simply by blending P3HT−NH2with PS−SO3H in toluene. The thermal and optical properties of the block copolymers were investigated by differential scanning calorimetry (DSC) and ultraviolet−visible (UV−vis) spectroscopy. The self-assembly behavior of the (P3HT−NH3)-b-(PS−SO3−) thin film was observed by atomic force microscopy (AFM) and transmission electron microscopy (TEM). In addition, grazing incidence X-ray scattering (GIXS) analysis found the microphase separation of P3HT−NH3橷 PS−SO3−domains as well as the packing behavior of P3HT−NH3뇨♺筬 in block copolymer thin films. By exploiting the pH-sensitive ionic interaction, the PS−SO3−domains were selectively etched with ethyl acetate/triethylamine, cleaving the ionic interaction between P3HT−NH3橷 PS−SO3−segments, to obtain the target nanoporous P3HT−NH2films. The porosity of the films was confirmed by AFM, scanning electron microscopy (SEM) and GIXS analyses. [ABSTRACT FROM AUTHOR]
Copyright of Macromolecules is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Preparation of Nanoporous Poly(3-hexylthiophene) Films Based on a Template System of Block Copolymers via Ionic Interaction.
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  Data: <searchLink fieldCode="AR" term="%22Ayumi+Takahashi%22">Ayumi Takahashi</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Yecheol+Rho%22">Yecheol Rho</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Tomoya+Higashihara%22">Tomoya Higashihara</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Byungcheol+Ahn%22">Byungcheol Ahn</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Moonhor+Ree%22">Moonhor Ree</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Mitsuru+Ueda%22">Mitsuru Ueda</searchLink><relatesTo>1</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Macromolecules%22">Macromolecules</searchLink>. Jun2010, Vol. 43 Issue 11, p4843-4852. 10p.
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  Data: *<searchLink fieldCode="DE" term="%22NANOSTRUCTURED+materials%22">NANOSTRUCTURED materials</searchLink><br />*<searchLink fieldCode="DE" term="%22POROUS+materials%22">POROUS materials</searchLink><br />*<searchLink fieldCode="DE" term="%22BLOCK+copolymers%22">BLOCK copolymers</searchLink><br />*<searchLink fieldCode="DE" term="%22POLYSTYRENE%22">POLYSTYRENE</searchLink><br />*<searchLink fieldCode="DE" term="%22METATHESIS+reactions%22">METATHESIS reactions</searchLink><br />*<searchLink fieldCode="DE" term="%22POLYMERIZATION%22">POLYMERIZATION</searchLink><br />*<searchLink fieldCode="DE" term="%22CALORIMETRY%22">CALORIMETRY</searchLink><br />*<searchLink fieldCode="DE" term="%22ELECTRON+microscopy%22">ELECTRON microscopy</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: A series of well-defined aniline-chain-end-functionalized regioregular poly(3-hexylthiophene)s (P3HT−NH2) and sulfo-chain-end-functionalized polystyrene (PS−SO3H) have been prepared based on quasi-living Grignard metathesis and living anionic polymerization, respectively. Block copolymers via ionic interaction, (P3HT−NH3)-b-(PS−SO3−)s, were successfully synthesized, simply by blending P3HT−NH2with PS−SO3H in toluene. The thermal and optical properties of the block copolymers were investigated by differential scanning calorimetry (DSC) and ultraviolet−visible (UV−vis) spectroscopy. The self-assembly behavior of the (P3HT−NH3)-b-(PS−SO3−) thin film was observed by atomic force microscopy (AFM) and transmission electron microscopy (TEM). In addition, grazing incidence X-ray scattering (GIXS) analysis found the microphase separation of P3HT−NH3橷 PS−SO3−domains as well as the packing behavior of P3HT−NH3뇨♺筬 in block copolymer thin films. By exploiting the pH-sensitive ionic interaction, the PS−SO3−domains were selectively etched with ethyl acetate/triethylamine, cleaving the ionic interaction between P3HT−NH3橷 PS−SO3−segments, to obtain the target nanoporous P3HT−NH2films. The porosity of the films was confirmed by AFM, scanning electron microscopy (SEM) and GIXS analyses. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
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  Data: <i>Copyright of Macromolecules is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1021/ma100957q
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      – Code: eng
        Text: English
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        PageCount: 10
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      – SubjectFull: NANOSTRUCTURED materials
        Type: general
      – SubjectFull: POROUS materials
        Type: general
      – SubjectFull: BLOCK copolymers
        Type: general
      – SubjectFull: POLYSTYRENE
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      – SubjectFull: METATHESIS reactions
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      – SubjectFull: POLYMERIZATION
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      – SubjectFull: CALORIMETRY
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      – SubjectFull: ELECTRON microscopy
        Type: general
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      – TitleFull: Preparation of Nanoporous Poly(3-hexylthiophene) Films Based on a Template System of Block Copolymers via Ionic Interaction.
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          Name:
            NameFull: Ayumi Takahashi
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            NameFull: Yecheol Rho
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            – D: 01
              M: 06
              Text: Jun2010
              Type: published
              Y: 2010
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            – TitleFull: Macromolecules
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