Fluorescence Modulation of Conjugated Polymer Nanoparticles Embedded in Poly(<i>N</i>-Isopropylacrylamide) Hydrogel
A series of conjugated polymers (CPs) emitting red, green, and blue (RGB) fluorescence were synthesized via the Suzuki coupling polymerization. Polymer dots (Pdots) were fabricated by the reprecipitation method from corresponding CPs, in which the Pdot surface was functionalized to have an allyl moi...
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| Format: | Article |
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MDPI AG
2021-12-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/13/24/4315 |
| _version_ | 1797501245848551424 |
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| author | Ho Namgung Seonyoung Jo Taek Seung Lee |
| author_facet | Ho Namgung Seonyoung Jo Taek Seung Lee |
| author_sort | Ho Namgung |
| collection | DOAJ |
| description | A series of conjugated polymers (CPs) emitting red, green, and blue (RGB) fluorescence were synthesized via the Suzuki coupling polymerization. Polymer dots (Pdots) were fabricated by the reprecipitation method from corresponding CPs, in which the Pdot surface was functionalized to have an allyl moiety. The CP backbones were based on the phenylene group, causing the Pdots to show identical ultraviolet-visible absorption at 350 nm, indicating that the same excitation wavelength could be used. The Pdots were covalently embedded in poly(<i>N</i>-isopropylacrylamide) (PNIPAM) hydrogel for further use as a thermoresponsive moiety in the polymer hydrogel. The polymer hydrogel with RGB emission colors could provide thermally reversible fluorescence changes. The size of the hydrogel varied with temperature change because of the PNIPAM’s shrinking and swelling. The swollen and contracted conformations of the Pdot-embedded PNIPAM enabled on-and-off fluorescence, respectively. Fluorescence modulation with 20 to 80% of the hydrogel was possible via thermoreversibility. The fluorescent hydrogel could be a new fluorescence-tuning hybrid material that changes with temperature. |
| first_indexed | 2024-03-10T03:15:37Z |
| format | Article |
| id | doaj.art-775d4eeb80cc44b58f13c1c573ea316c |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-10T03:15:37Z |
| publishDate | 2021-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-775d4eeb80cc44b58f13c1c573ea316c2023-11-23T10:14:35ZengMDPI AGPolymers2073-43602021-12-011324431510.3390/polym13244315Fluorescence Modulation of Conjugated Polymer Nanoparticles Embedded in Poly(<i>N</i>-Isopropylacrylamide) HydrogelHo Namgung0Seonyoung Jo1Taek Seung Lee2Organic and Optoelectronic Materials Laboratory, Department of Organic Materials Engineering, Chungnam National University, Daejeon 34134, KoreaOrganic and Optoelectronic Materials Laboratory, Department of Organic Materials Engineering, Chungnam National University, Daejeon 34134, KoreaOrganic and Optoelectronic Materials Laboratory, Department of Organic Materials Engineering, Chungnam National University, Daejeon 34134, KoreaA series of conjugated polymers (CPs) emitting red, green, and blue (RGB) fluorescence were synthesized via the Suzuki coupling polymerization. Polymer dots (Pdots) were fabricated by the reprecipitation method from corresponding CPs, in which the Pdot surface was functionalized to have an allyl moiety. The CP backbones were based on the phenylene group, causing the Pdots to show identical ultraviolet-visible absorption at 350 nm, indicating that the same excitation wavelength could be used. The Pdots were covalently embedded in poly(<i>N</i>-isopropylacrylamide) (PNIPAM) hydrogel for further use as a thermoresponsive moiety in the polymer hydrogel. The polymer hydrogel with RGB emission colors could provide thermally reversible fluorescence changes. The size of the hydrogel varied with temperature change because of the PNIPAM’s shrinking and swelling. The swollen and contracted conformations of the Pdot-embedded PNIPAM enabled on-and-off fluorescence, respectively. Fluorescence modulation with 20 to 80% of the hydrogel was possible via thermoreversibility. The fluorescent hydrogel could be a new fluorescence-tuning hybrid material that changes with temperature.https://www.mdpi.com/2073-4360/13/24/4315conjugated polymer dotsPNIPAMthermoreversible fluorescencehydrogel |
| spellingShingle | Ho Namgung Seonyoung Jo Taek Seung Lee Fluorescence Modulation of Conjugated Polymer Nanoparticles Embedded in Poly(<i>N</i>-Isopropylacrylamide) Hydrogel Polymers conjugated polymer dots PNIPAM thermoreversible fluorescence hydrogel |
| title | Fluorescence Modulation of Conjugated Polymer Nanoparticles Embedded in Poly(<i>N</i>-Isopropylacrylamide) Hydrogel |
| title_full | Fluorescence Modulation of Conjugated Polymer Nanoparticles Embedded in Poly(<i>N</i>-Isopropylacrylamide) Hydrogel |
| title_fullStr | Fluorescence Modulation of Conjugated Polymer Nanoparticles Embedded in Poly(<i>N</i>-Isopropylacrylamide) Hydrogel |
| title_full_unstemmed | Fluorescence Modulation of Conjugated Polymer Nanoparticles Embedded in Poly(<i>N</i>-Isopropylacrylamide) Hydrogel |
| title_short | Fluorescence Modulation of Conjugated Polymer Nanoparticles Embedded in Poly(<i>N</i>-Isopropylacrylamide) Hydrogel |
| title_sort | fluorescence modulation of conjugated polymer nanoparticles embedded in poly i n i isopropylacrylamide hydrogel |
| topic | conjugated polymer dots PNIPAM thermoreversible fluorescence hydrogel |
| url | https://www.mdpi.com/2073-4360/13/24/4315 |
| work_keys_str_mv | AT honamgung fluorescencemodulationofconjugatedpolymernanoparticlesembeddedinpolyiniisopropylacrylamidehydrogel AT seonyoungjo fluorescencemodulationofconjugatedpolymernanoparticlesembeddedinpolyiniisopropylacrylamidehydrogel AT taekseunglee fluorescencemodulationofconjugatedpolymernanoparticlesembeddedinpolyiniisopropylacrylamidehydrogel |