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Adamantyl and carbazole containing trans-poly(norbornene-dicarboximide)s as electro-optic chromophore hosts.

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Title: Adamantyl and carbazole containing trans-poly(norbornene-dicarboximide)s as electro-optic chromophore hosts.
Authors: Spring, Andrew M.1 (AUTHOR), Qiu, Feng2 (AUTHOR), Hong, Jianxun2 (AUTHOR), Bannaron, Alisa1 (AUTHOR), Cheng, Xiaoyang1 (AUTHOR), Yokoyama, Shiyoshi1,2 (AUTHOR) s_yokoyama@cm.kyushu-u.ac.jp
Source: Polymer. May2019, Vol. 172, p382-390. 9p.
Subjects: Carbazole, Random copolymers, Glass transition temperature, Molecular weights, Glass transitions, Monomers
Abstract: A selection of trans -poly(norbornene-dicarboximide) random copolymers incorporating adamantyl and carbazole groups have been prepared using the Grubbs 1st generation catalyst. The copolymer with the greatest carbazole content was employed as a host for a high activity chromophore guest. The adamantyl groups were able to elevate the glass transition and thermal decomposition temperatures of the host copolymers, while the carbazole groups were included to facilitate the dispersion of the added chromophores and enhance the poling process. The mass of the adamantyl pendant monomer was kept constant as the mass of the carbazole pendant monomer was increased gradually. The successful incorporation of the carbazole moiety into the copolymers was confirmed by 1H NMR integration. The polymers had a predominantly trans microstructure and the cis / trans ratio did not change significantly. The polymer molecular weights increased linearly from 25,758 g/mol to 56,827 g/mol as more carbazole-pendant monomer was incorporated. Polydispersities ranged from 1.29 to 1.70 and elemental analysis confirmed an ascending carbon% in the polymers from 72.29% to 76.26%. The glass transition temperatures decreased from 240 °C to 126 °C, with the thermal decomposition temperatures (10% loss) remaining relatively constant at between 423 °C to 394 °C, indicating the polymers had a good thermal stability. The chromophore guest concentration was increased gradually into the copolymer host from 15 wt% to 65 wt%. When poled at a field of 50 V/μm in thin film it was found that the optimum poling temperature decreased linearly from 150 °C to 90 °C as the chromophore concentration was increased, a maximum poling efficiency of 1.02 was achieved at a chromophore concentration of 55 wt%. Image 1 • Random copolymers containing pendant adamantyl and carbazole groups. • High polling efficiency electro-optic guest-host system. • Ring opening metathesis polymerization of functionalized NDI monomers. • High glass transition and thermal decomposition temperature materials. [ABSTRACT FROM AUTHOR]
Copyright of Polymer is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. 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.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 136202394
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PubType: Academic Journal
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  Label: Title
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  Data: Adamantyl and carbazole containing trans-poly(norbornene-dicarboximide)s as electro-optic chromophore hosts.
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  Data: <searchLink fieldCode="AR" term="%22Spring%2C+Andrew+M%2E%22">Spring, Andrew M.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Qiu%2C+Feng%22">Qiu, Feng</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Hong%2C+Jianxun%22">Hong, Jianxun</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Bannaron%2C+Alisa%22">Bannaron, Alisa</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Cheng%2C+Xiaoyang%22">Cheng, Xiaoyang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yokoyama%2C+Shiyoshi%22">Yokoyama, Shiyoshi</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> s_yokoyama@cm.kyushu-u.ac.jp</i>
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  Data: <searchLink fieldCode="JN" term="%22Polymer%22">Polymer</searchLink>. May2019, Vol. 172, p382-390. 9p.
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  Data: <searchLink fieldCode="DE" term="%22Carbazole%22">Carbazole</searchLink><br /><searchLink fieldCode="DE" term="%22Random+copolymers%22">Random copolymers</searchLink><br /><searchLink fieldCode="DE" term="%22Glass+transition+temperature%22">Glass transition temperature</searchLink><br /><searchLink fieldCode="DE" term="%22Molecular+weights%22">Molecular weights</searchLink><br /><searchLink fieldCode="DE" term="%22Glass+transitions%22">Glass transitions</searchLink><br /><searchLink fieldCode="DE" term="%22Monomers%22">Monomers</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: A selection of trans -poly(norbornene-dicarboximide) random copolymers incorporating adamantyl and carbazole groups have been prepared using the Grubbs 1st generation catalyst. The copolymer with the greatest carbazole content was employed as a host for a high activity chromophore guest. The adamantyl groups were able to elevate the glass transition and thermal decomposition temperatures of the host copolymers, while the carbazole groups were included to facilitate the dispersion of the added chromophores and enhance the poling process. The mass of the adamantyl pendant monomer was kept constant as the mass of the carbazole pendant monomer was increased gradually. The successful incorporation of the carbazole moiety into the copolymers was confirmed by 1H NMR integration. The polymers had a predominantly trans microstructure and the cis / trans ratio did not change significantly. The polymer molecular weights increased linearly from 25,758 g/mol to 56,827 g/mol as more carbazole-pendant monomer was incorporated. Polydispersities ranged from 1.29 to 1.70 and elemental analysis confirmed an ascending carbon% in the polymers from 72.29% to 76.26%. The glass transition temperatures decreased from 240 °C to 126 °C, with the thermal decomposition temperatures (10% loss) remaining relatively constant at between 423 °C to 394 °C, indicating the polymers had a good thermal stability. The chromophore guest concentration was increased gradually into the copolymer host from 15 wt% to 65 wt%. When poled at a field of 50 V/μm in thin film it was found that the optimum poling temperature decreased linearly from 150 °C to 90 °C as the chromophore concentration was increased, a maximum poling efficiency of 1.02 was achieved at a chromophore concentration of 55 wt%. Image 1 • Random copolymers containing pendant adamantyl and carbazole groups. • High polling efficiency electro-optic guest-host system. • Ring opening metathesis polymerization of functionalized NDI monomers. • High glass transition and thermal decomposition temperature materials. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Polymer is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. 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: 10.1016/j.polymer.2019.04.015
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      – Code: eng
        Text: English
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        StartPage: 382
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        Type: general
      – SubjectFull: Random copolymers
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      – SubjectFull: Glass transition temperature
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      – SubjectFull: Molecular weights
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      – SubjectFull: Glass transitions
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      – SubjectFull: Monomers
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      – TitleFull: Adamantyl and carbazole containing trans-poly(norbornene-dicarboximide)s as electro-optic chromophore hosts.
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              M: 05
              Text: May2019
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