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Synthesis and gas separation of HOF-21/Triphenylamine polyimide mixed matrix membranes.

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Title: Synthesis and gas separation of HOF-21/Triphenylamine polyimide mixed matrix membranes.
Authors: Qu, Junjie1 (AUTHOR), Mo, Junhao1 (AUTHOR), Wu, Shanshan1 (AUTHOR), Shan, Chao1 (AUTHOR), Liu, Chanjuan1 (AUTHOR) liuchanjuan@glut.edu.cn, Huang, Xiaohua1 (AUTHOR) huangxiaohua@glut.edu.cn
Source: Journal of Polymer Research. Jun2026, Vol. 33 Issue 6, p1-13. 13p.
Subjects: Separation of gases, Polyimides, Polymeric membranes, Mechanical behavior of materials, Thermal stability, Hydrogen-bonded organic frameworks
Abstract: A novel trianiline diamine monomer, 4,4'-diamino-4-(3,4,5-trimethoxy)triphenylamine (DATT), was synthesized from 3,4,5-trimethoxyaniline and 4-fluoronitrobenzene. Subsequently, a fluorinated polyimide (MTPI) bearing triphenylamine, methoxy, fluorenyl, and hexafluoroisopropylidene moieties was prepared by copolymerizing DATT with 9,9'-bis(4-amino-3-fluorophenyl)fluorene (FFDA) and 4,4'-(hexafluoroisopropylidene)phthalic anhydride (6FDA). Mixed matrix membranes (MMMs) comprising HOF-21 and MTPI were fabricated via blending with HOF-21. The resulting MMMs exhibited outstanding thermal stability (T10% > 518 ℃) and hydrophobicity (water contact angle of 82.7°-90.7°). All membranes maintained good mechanical properties, with tensile strengths exceeding 56 MPa, Young's moduli ranging from 1.045 to 1.503 GPa, and elongation at break between 5.14% and 6.77%. In terms of gas separation performance, the 4% HOF-21/MTPI membrane demonstrated high CO2 permeability (29.61 Barrer) and CO2/N2 selectivity (α = 25.32), representing improvements of 22.6% and 14.7%, respectively, compared to the substrate membrane, approaching the Robeson upper limit in 2008. Highlights: A novel diamine monomer containing triphenylamine structure was designed and synthesized. HOF-21/MTPI mixed matrix membranes were successfully prepared. The prepared mixed matrix membrane exhibits excellent gas separation performance, approaching the Robertson upper limit of 2008. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Polymer Research is the property of Springer Nature 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.)
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DbLabel: Engineering Source
An: 194937035
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  Label: Title
  Group: Ti
  Data: Synthesis and gas separation of HOF-21/Triphenylamine polyimide mixed matrix membranes.
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  Data: <searchLink fieldCode="AR" term="%22Qu%2C+Junjie%22">Qu, Junjie</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Mo%2C+Junhao%22">Mo, Junhao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wu%2C+Shanshan%22">Wu, Shanshan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Shan%2C+Chao%22">Shan, Chao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Chanjuan%22">Liu, Chanjuan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> liuchanjuan@glut.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Huang%2C+Xiaohua%22">Huang, Xiaohua</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> huangxiaohua@glut.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Polymer+Research%22">Journal of Polymer Research</searchLink>. Jun2026, Vol. 33 Issue 6, p1-13. 13p.
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  Data: <searchLink fieldCode="DE" term="%22Separation+of+gases%22">Separation of gases</searchLink><br /><searchLink fieldCode="DE" term="%22Polyimides%22">Polyimides</searchLink><br /><searchLink fieldCode="DE" term="%22Polymeric+membranes%22">Polymeric membranes</searchLink><br /><searchLink fieldCode="DE" term="%22Mechanical+behavior+of+materials%22">Mechanical behavior of materials</searchLink><br /><searchLink fieldCode="DE" term="%22Thermal+stability%22">Thermal stability</searchLink><br /><searchLink fieldCode="DE" term="%22Hydrogen-bonded+organic+frameworks%22">Hydrogen-bonded organic frameworks</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: A novel trianiline diamine monomer, 4,4'-diamino-4-(3,4,5-trimethoxy)triphenylamine (DATT), was synthesized from 3,4,5-trimethoxyaniline and 4-fluoronitrobenzene. Subsequently, a fluorinated polyimide (MTPI) bearing triphenylamine, methoxy, fluorenyl, and hexafluoroisopropylidene moieties was prepared by copolymerizing DATT with 9,9'-bis(4-amino-3-fluorophenyl)fluorene (FFDA) and 4,4'-(hexafluoroisopropylidene)phthalic anhydride (6FDA). Mixed matrix membranes (MMMs) comprising HOF-21 and MTPI were fabricated via blending with HOF-21. The resulting MMMs exhibited outstanding thermal stability (T10% > 518 ℃) and hydrophobicity (water contact angle of 82.7°-90.7°). All membranes maintained good mechanical properties, with tensile strengths exceeding 56 MPa, Young's moduli ranging from 1.045 to 1.503 GPa, and elongation at break between 5.14% and 6.77%. In terms of gas separation performance, the 4% HOF-21/MTPI membrane demonstrated high CO2 permeability (29.61 Barrer) and CO2/N2 selectivity (α = 25.32), representing improvements of 22.6% and 14.7%, respectively, compared to the substrate membrane, approaching the Robeson upper limit in 2008. Highlights: A novel diamine monomer containing triphenylamine structure was designed and synthesized. HOF-21/MTPI mixed matrix membranes were successfully prepared. The prepared mixed matrix membrane exhibits excellent gas separation performance, approaching the Robertson upper limit of 2008. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Polymer Research is the property of Springer Nature 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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RecordInfo BibRecord:
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        Value: 10.1007/s10965-026-04942-2
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 13
        StartPage: 1
    Subjects:
      – SubjectFull: Separation of gases
        Type: general
      – SubjectFull: Polyimides
        Type: general
      – SubjectFull: Polymeric membranes
        Type: general
      – SubjectFull: Mechanical behavior of materials
        Type: general
      – SubjectFull: Thermal stability
        Type: general
      – SubjectFull: Hydrogen-bonded organic frameworks
        Type: general
    Titles:
      – TitleFull: Synthesis and gas separation of HOF-21/Triphenylamine polyimide mixed matrix membranes.
        Type: main
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          Name:
            NameFull: Qu, Junjie
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            NameFull: Mo, Junhao
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            NameFull: Wu, Shanshan
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            NameFull: Shan, Chao
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            NameFull: Liu, Chanjuan
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            – D: 01
              M: 06
              Text: Jun2026
              Type: published
              Y: 2026
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              Value: 33
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            – TitleFull: Journal of Polymer Research
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