The Impact of the Azo-Chromophore Sort on the Features of the Supramolecular Azopolyimide Films Desired to Be Used as Substrates for Flexible Electronics
High-performance supramolecular polyimide systems were synthesized via a simple and innovative approach using two types of azo-chromophores, leading to concomitant special properties: high thermostability, the ability to be processed in the form of films with high flexibility, adequate morphological...
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| Format: | Article |
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MDPI AG
2022-12-01
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| Series: | International Journal of Molecular Sciences |
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| Online Access: | https://www.mdpi.com/1422-0067/23/23/15223 |
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| author | Iuliana Stoica Elena-Luiza Epure Andreea Irina Barzic Ilarion Mihaila Catalin-Paul Constantin Ion Sava |
| author_facet | Iuliana Stoica Elena-Luiza Epure Andreea Irina Barzic Ilarion Mihaila Catalin-Paul Constantin Ion Sava |
| author_sort | Iuliana Stoica |
| collection | DOAJ |
| description | High-performance supramolecular polyimide systems were synthesized via a simple and innovative approach using two types of azo-chromophores, leading to concomitant special properties: high thermostability, the ability to be processed in the form of films with high flexibility, adequate morphological features, and good structuring capacity via phase mask ultraviolet (UV) laser irradiation, induced by the presence of the azo groups (–N=N–). The dimension and the anisotropy degree of the micro/nano patterns obtained on the surface of the flexible films (determined by atomic force microscopy) depend on the azo-dye type used in the supramolecular azopolyimide synthesis, which were higher when the azo-chromophore containing a –cyano group (–C≡N) was used. The molecular dynamics method, an excellent tool for an in-depth examination of the intermolecular interactions, was used to explain the morphological aspects. Energetic, dynamic and structural parameters were calculated for the two systems containing azo-chromophores, as well as for the pristine polymer system. It was highlighted that the van der Waals forces make a major contribution to the intermolecular interactions. The results from the combination of the dynamic analysis and the concentration profile explain the better mobility of the polyimide chains with a maximum content of azo groups in the <i>cis</i> configuration compared to the other systems. Taking all these data into account, the surfaces of the films can be tuned as required for the proposed applications, namely as substrates for flexible electronis. |
| first_indexed | 2024-03-09T17:44:34Z |
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| id | doaj.art-7b2982163d5145279714f3a5b2b91f8c |
| institution | Directory Open Access Journal |
| issn | 1661-6596 1422-0067 |
| language | English |
| last_indexed | 2024-03-09T17:44:34Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | International Journal of Molecular Sciences |
| spelling | doaj.art-7b2982163d5145279714f3a5b2b91f8c2023-11-24T11:15:21ZengMDPI AGInternational Journal of Molecular Sciences1661-65961422-00672022-12-0123231522310.3390/ijms232315223The Impact of the Azo-Chromophore Sort on the Features of the Supramolecular Azopolyimide Films Desired to Be Used as Substrates for Flexible ElectronicsIuliana Stoica0Elena-Luiza Epure1Andreea Irina Barzic2Ilarion Mihaila3Catalin-Paul Constantin4Ion Sava5Department of Physical Chemistry of Polymers, “Petru Poni” Institute of Macromolecular Chemistry, 700487 Iasi, RomaniaFaculty of Chemical Engineering & Environmental Protection, “Gheorghe Asachi” Technical University, 700050 Iasi, RomaniaDepartment of Physical Chemistry of Polymers, “Petru Poni” Institute of Macromolecular Chemistry, 700487 Iasi, RomaniaIntegrated Center of Environmental Science Studies in the North-Eastern Development Region (CERNESIM), “Alexandru Ioan Cuza” University of Iasi, 700506 Iasi, RomaniaDepartment of Electroactive Polymers and Plasmochemistry, “Petru Poni” Institute of Macromolecular Chemistry, 700487 Iasi, RomaniaDepartment of Electroactive Polymers and Plasmochemistry, “Petru Poni” Institute of Macromolecular Chemistry, 700487 Iasi, RomaniaHigh-performance supramolecular polyimide systems were synthesized via a simple and innovative approach using two types of azo-chromophores, leading to concomitant special properties: high thermostability, the ability to be processed in the form of films with high flexibility, adequate morphological features, and good structuring capacity via phase mask ultraviolet (UV) laser irradiation, induced by the presence of the azo groups (–N=N–). The dimension and the anisotropy degree of the micro/nano patterns obtained on the surface of the flexible films (determined by atomic force microscopy) depend on the azo-dye type used in the supramolecular azopolyimide synthesis, which were higher when the azo-chromophore containing a –cyano group (–C≡N) was used. The molecular dynamics method, an excellent tool for an in-depth examination of the intermolecular interactions, was used to explain the morphological aspects. Energetic, dynamic and structural parameters were calculated for the two systems containing azo-chromophores, as well as for the pristine polymer system. It was highlighted that the van der Waals forces make a major contribution to the intermolecular interactions. The results from the combination of the dynamic analysis and the concentration profile explain the better mobility of the polyimide chains with a maximum content of azo groups in the <i>cis</i> configuration compared to the other systems. Taking all these data into account, the surfaces of the films can be tuned as required for the proposed applications, namely as substrates for flexible electronis.https://www.mdpi.com/1422-0067/23/23/15223azo-chromophoresupramolecular systemflexible azopolyimide filmcolorimetrysurface relief gratingatomic force microscopy |
| spellingShingle | Iuliana Stoica Elena-Luiza Epure Andreea Irina Barzic Ilarion Mihaila Catalin-Paul Constantin Ion Sava The Impact of the Azo-Chromophore Sort on the Features of the Supramolecular Azopolyimide Films Desired to Be Used as Substrates for Flexible Electronics International Journal of Molecular Sciences azo-chromophore supramolecular system flexible azopolyimide film colorimetry surface relief grating atomic force microscopy |
| title | The Impact of the Azo-Chromophore Sort on the Features of the Supramolecular Azopolyimide Films Desired to Be Used as Substrates for Flexible Electronics |
| title_full | The Impact of the Azo-Chromophore Sort on the Features of the Supramolecular Azopolyimide Films Desired to Be Used as Substrates for Flexible Electronics |
| title_fullStr | The Impact of the Azo-Chromophore Sort on the Features of the Supramolecular Azopolyimide Films Desired to Be Used as Substrates for Flexible Electronics |
| title_full_unstemmed | The Impact of the Azo-Chromophore Sort on the Features of the Supramolecular Azopolyimide Films Desired to Be Used as Substrates for Flexible Electronics |
| title_short | The Impact of the Azo-Chromophore Sort on the Features of the Supramolecular Azopolyimide Films Desired to Be Used as Substrates for Flexible Electronics |
| title_sort | impact of the azo chromophore sort on the features of the supramolecular azopolyimide films desired to be used as substrates for flexible electronics |
| topic | azo-chromophore supramolecular system flexible azopolyimide film colorimetry surface relief grating atomic force microscopy |
| url | https://www.mdpi.com/1422-0067/23/23/15223 |
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