Effects of Neutral, Anionic and Cationic Polymer Brushes Grafted from Poly(para-phenylene vinylene) and Poly(para-phenylene ethynylene) on the Polymer’s Photoluminescent Properties
The conformation of a fluorescent polymer, in the solid state or in solution, plays a critical role in the polymer’s fluorescent properties. Thus, grafted side chains on a fluorescent polymer can directly influence its optical properties. In this study, the effect of grafted polymeric side chains on...
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| Format: | Article |
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MDPI AG
2022-07-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/14/14/2767 |
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| author | Thomas Kerr-Phillips Mona Damavandi Lisa I. Pilkington Kathryn A. Whitehead Jadranka Travas-Sejdic David Barker |
| author_facet | Thomas Kerr-Phillips Mona Damavandi Lisa I. Pilkington Kathryn A. Whitehead Jadranka Travas-Sejdic David Barker |
| author_sort | Thomas Kerr-Phillips |
| collection | DOAJ |
| description | The conformation of a fluorescent polymer, in the solid state or in solution, plays a critical role in the polymer’s fluorescent properties. Thus, grafted side chains on a fluorescent polymer can directly influence its optical properties. In this study, the effect of grafted polymeric side chains on the photoluminescent properties of poly(para-phenylene vinylene) (PPV) and poly(para-phenylene ethynylene) (PPE) were investigated. Low- and high-molecular-weight grafts of neutral poly(n-butyl acrylate), cationic poly(trimethylaminoethyl methacrylate) and anionic poly(sulfopropyl acrylate) were grafted onto PPVs and PPEs, and the effect of the grafting on the graft copolymer’s absorption and emission wavelengths, the fluorescence intensity and the quantum yield were studied. The results indicate that in the case of the ionic grafts, contrary to the expectations, the polymers have a reduced quantum yield. This contrasts with the copolymers with uncharged side chains (P<i>n</i>BA), where a major increase in the quantum yield is seen for the self-quenching conjugated pristine polymers. These results reinforce that the molecular conformation of the polymer in a solid or solution plays a critical role in fluorescent polymers photoluminescent properties. |
| first_indexed | 2024-03-09T13:10:09Z |
| format | Article |
| id | doaj.art-f29aaef1b56a4d878231eb9995c91e4f |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-09T13:10:09Z |
| publishDate | 2022-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-f29aaef1b56a4d878231eb9995c91e4f2023-11-30T21:44:09ZengMDPI AGPolymers2073-43602022-07-011414276710.3390/polym14142767Effects of Neutral, Anionic and Cationic Polymer Brushes Grafted from Poly(para-phenylene vinylene) and Poly(para-phenylene ethynylene) on the Polymer’s Photoluminescent PropertiesThomas Kerr-Phillips0Mona Damavandi1Lisa I. Pilkington2Kathryn A. Whitehead3Jadranka Travas-Sejdic4David Barker5School of Chemical Sciences, University of Auckland, Private Bag, Auckland 92019, New ZealandSchool of Chemical Sciences, University of Auckland, Private Bag, Auckland 92019, New ZealandSchool of Chemical Sciences, University of Auckland, Private Bag, Auckland 92019, New ZealandMicrobiology at Interfaces, Manchester Metropolitan University, Chester Street, Manchester M1 5GD, UKSchool of Chemical Sciences, University of Auckland, Private Bag, Auckland 92019, New ZealandSchool of Chemical Sciences, University of Auckland, Private Bag, Auckland 92019, New ZealandThe conformation of a fluorescent polymer, in the solid state or in solution, plays a critical role in the polymer’s fluorescent properties. Thus, grafted side chains on a fluorescent polymer can directly influence its optical properties. In this study, the effect of grafted polymeric side chains on the photoluminescent properties of poly(para-phenylene vinylene) (PPV) and poly(para-phenylene ethynylene) (PPE) were investigated. Low- and high-molecular-weight grafts of neutral poly(n-butyl acrylate), cationic poly(trimethylaminoethyl methacrylate) and anionic poly(sulfopropyl acrylate) were grafted onto PPVs and PPEs, and the effect of the grafting on the graft copolymer’s absorption and emission wavelengths, the fluorescence intensity and the quantum yield were studied. The results indicate that in the case of the ionic grafts, contrary to the expectations, the polymers have a reduced quantum yield. This contrasts with the copolymers with uncharged side chains (P<i>n</i>BA), where a major increase in the quantum yield is seen for the self-quenching conjugated pristine polymers. These results reinforce that the molecular conformation of the polymer in a solid or solution plays a critical role in fluorescent polymers photoluminescent properties.https://www.mdpi.com/2073-4360/14/14/2767molecular engineeringgrafted polymersfluorescence |
| spellingShingle | Thomas Kerr-Phillips Mona Damavandi Lisa I. Pilkington Kathryn A. Whitehead Jadranka Travas-Sejdic David Barker Effects of Neutral, Anionic and Cationic Polymer Brushes Grafted from Poly(para-phenylene vinylene) and Poly(para-phenylene ethynylene) on the Polymer’s Photoluminescent Properties Polymers molecular engineering grafted polymers fluorescence |
| title | Effects of Neutral, Anionic and Cationic Polymer Brushes Grafted from Poly(para-phenylene vinylene) and Poly(para-phenylene ethynylene) on the Polymer’s Photoluminescent Properties |
| title_full | Effects of Neutral, Anionic and Cationic Polymer Brushes Grafted from Poly(para-phenylene vinylene) and Poly(para-phenylene ethynylene) on the Polymer’s Photoluminescent Properties |
| title_fullStr | Effects of Neutral, Anionic and Cationic Polymer Brushes Grafted from Poly(para-phenylene vinylene) and Poly(para-phenylene ethynylene) on the Polymer’s Photoluminescent Properties |
| title_full_unstemmed | Effects of Neutral, Anionic and Cationic Polymer Brushes Grafted from Poly(para-phenylene vinylene) and Poly(para-phenylene ethynylene) on the Polymer’s Photoluminescent Properties |
| title_short | Effects of Neutral, Anionic and Cationic Polymer Brushes Grafted from Poly(para-phenylene vinylene) and Poly(para-phenylene ethynylene) on the Polymer’s Photoluminescent Properties |
| title_sort | effects of neutral anionic and cationic polymer brushes grafted from poly para phenylene vinylene and poly para phenylene ethynylene on the polymer s photoluminescent properties |
| topic | molecular engineering grafted polymers fluorescence |
| url | https://www.mdpi.com/2073-4360/14/14/2767 |
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