Metathesis Cyclopolymerization Triggered Self-Assembly of Azobenzene-Containing Nanostructure
Azobenzene (AB) units were successfully introduced into poly(1,6-heptadiyne)s in order to ensure smooth synthesis of double- and single-stranded poly(1,6-heptadiyne)s (<b>P1</b> and <b>P2</b>) and simultaneously realize the self-assembly by Grubbs-III catalyst-mediated metath...
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MDPI AG
2020-08-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/25/17/3767 |
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| author | Wei Song Jiamin Shen Xiang Li Jinhui Huang Liang Ding Jianhua Wu |
| author_facet | Wei Song Jiamin Shen Xiang Li Jinhui Huang Liang Ding Jianhua Wu |
| author_sort | Wei Song |
| collection | DOAJ |
| description | Azobenzene (AB) units were successfully introduced into poly(1,6-heptadiyne)s in order to ensure smooth synthesis of double- and single-stranded poly(1,6-heptadiyne)s (<b>P1</b> and <b>P2</b>) and simultaneously realize the self-assembly by Grubbs-III catalyst-mediated metathesis cyclopolymerization (CP) of AB-functionalized bis(1,6-heptadiyne) and 1,6-heptadiyne monomers (<b>M1</b> and <b>M2</b>). Monomers and polymers were characterized by <sup>1</sup>H NMR, mass spectroscopy, and GPC techniques. The double-stranded poly(1,6-heptadiyne)s exhibited a large scale of ordered ladder nanostructure. This result was attributed to the π−π attractions between end groups along the longitudinal axis of the polymers and van der Waals interactions between the neighboring polymeric backbones. While the Azo chromophore connected in the side chain of <b>P2</b> induced conformation of micelles nanostructure during the CP process without any post-treatment. Furthermore, the photoisomerization of Azo units had an obviously different regulatory effect on the conjugated degree of the polymer backbone, especially for the single-stranded <b>P2</b>, which was attributed to the structural differences and the interaction between AB chromophores in the polymers. |
| first_indexed | 2024-03-10T17:12:20Z |
| format | Article |
| id | doaj.art-ab1aeca9c7e94675b0011db87f856f59 |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-10T17:12:20Z |
| publishDate | 2020-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-ab1aeca9c7e94675b0011db87f856f592023-11-20T10:37:13ZengMDPI AGMolecules1420-30492020-08-012517376710.3390/molecules25173767Metathesis Cyclopolymerization Triggered Self-Assembly of Azobenzene-Containing NanostructureWei Song0Jiamin Shen1Xiang Li2Jinhui Huang3Liang Ding4Jianhua Wu5Department of Polymer and Composite Material, School of Materials Engineering, Yancheng Institute of Technology, Yancheng 224051, ChinaDepartment of Polymer and Composite Material, School of Materials Engineering, Yancheng Institute of Technology, Yancheng 224051, ChinaDepartment of Polymer and Composite Material, School of Materials Engineering, Yancheng Institute of Technology, Yancheng 224051, ChinaDepartment of Polymer and Composite Material, School of Materials Engineering, Yancheng Institute of Technology, Yancheng 224051, ChinaDepartment of Polymer and Composite Material, School of Materials Engineering, Yancheng Institute of Technology, Yancheng 224051, ChinaDepartment of Materials, College of Physics, Mechanical and Electrical Engineering, Jishou University, Jishou 416000, ChinaAzobenzene (AB) units were successfully introduced into poly(1,6-heptadiyne)s in order to ensure smooth synthesis of double- and single-stranded poly(1,6-heptadiyne)s (<b>P1</b> and <b>P2</b>) and simultaneously realize the self-assembly by Grubbs-III catalyst-mediated metathesis cyclopolymerization (CP) of AB-functionalized bis(1,6-heptadiyne) and 1,6-heptadiyne monomers (<b>M1</b> and <b>M2</b>). Monomers and polymers were characterized by <sup>1</sup>H NMR, mass spectroscopy, and GPC techniques. The double-stranded poly(1,6-heptadiyne)s exhibited a large scale of ordered ladder nanostructure. This result was attributed to the π−π attractions between end groups along the longitudinal axis of the polymers and van der Waals interactions between the neighboring polymeric backbones. While the Azo chromophore connected in the side chain of <b>P2</b> induced conformation of micelles nanostructure during the CP process without any post-treatment. Furthermore, the photoisomerization of Azo units had an obviously different regulatory effect on the conjugated degree of the polymer backbone, especially for the single-stranded <b>P2</b>, which was attributed to the structural differences and the interaction between AB chromophores in the polymers.https://www.mdpi.com/1420-3049/25/17/3767metathesis cyclopolymerizationdouble-stranded polymerpoly(1,6-heptadiyne)self-assemblyazobenzenes |
| spellingShingle | Wei Song Jiamin Shen Xiang Li Jinhui Huang Liang Ding Jianhua Wu Metathesis Cyclopolymerization Triggered Self-Assembly of Azobenzene-Containing Nanostructure Molecules metathesis cyclopolymerization double-stranded polymer poly(1,6-heptadiyne) self-assembly azobenzenes |
| title | Metathesis Cyclopolymerization Triggered Self-Assembly of Azobenzene-Containing Nanostructure |
| title_full | Metathesis Cyclopolymerization Triggered Self-Assembly of Azobenzene-Containing Nanostructure |
| title_fullStr | Metathesis Cyclopolymerization Triggered Self-Assembly of Azobenzene-Containing Nanostructure |
| title_full_unstemmed | Metathesis Cyclopolymerization Triggered Self-Assembly of Azobenzene-Containing Nanostructure |
| title_short | Metathesis Cyclopolymerization Triggered Self-Assembly of Azobenzene-Containing Nanostructure |
| title_sort | metathesis cyclopolymerization triggered self assembly of azobenzene containing nanostructure |
| topic | metathesis cyclopolymerization double-stranded polymer poly(1,6-heptadiyne) self-assembly azobenzenes |
| url | https://www.mdpi.com/1420-3049/25/17/3767 |
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