Stimulus-Responsiveness of Thermo-Sensitive Polymer Hybridized with N-Doped Carbon Quantum Dots and Its Applications in Solvent Recognition and Fe<sup>3+</sup> Ion Detection
To fabricate N-CQDs hybrid thermo-sensitive polymer (poly-N-CQDs), N-doped carbon quantum dots (N-CQDs) with strong blue fluorescence and poly(<i>N</i>-isopropylacrylamide-<i>co</i>-acrylic acid) (poly(NIPAAm-<i>co</i>-AAc)) copolymer with thermo-sensitivity were...
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MDPI AG
2022-05-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/14/10/1970 |
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| author | Tong Chen Hongwei Zhang Sanping Zhao |
| author_facet | Tong Chen Hongwei Zhang Sanping Zhao |
| author_sort | Tong Chen |
| collection | DOAJ |
| description | To fabricate N-CQDs hybrid thermo-sensitive polymer (poly-N-CQDs), N-doped carbon quantum dots (N-CQDs) with strong blue fluorescence and poly(<i>N</i>-isopropylacrylamide-<i>co</i>-acrylic acid) (poly(NIPAAm-<i>co</i>-AAc)) copolymer with thermo-sensitivity were synthesized, respectively. Subsequently, the coupling reaction between. the -COOH groups of poly(NIPAAm-<i>co</i>-AAc) and the -NH<sub>2</sub> groups on the surface of the N-CQDs was carried out. The fluorescence spectra show that the coil-globule transition of the poly-N-CQDs coincided with intensity changes in the scattering peak at excitation wavelength with the temperature variations. The phase transition temperature and the fluorescent intensity of poly-N-CQDs can be regulated by modulating the composition and concentration of poly-N-CQDs as well as the temperature and pH of the local medium. The thermo-sensitivity and fluorescent properties of the poly-N-CQDs displayed good stability and reversibility. The fluorescence intensity and emission wavelengths of the poly-N-CQDs significantly changed in different solvents for solvent recognition. The poly-N-CQDs was employed as a fluorescent probe for Fe<sup>3+</sup> detection ranging from 0.025 to 1 mM with a limit of detection (LOD) of 9.49 μM. The hybrid polymer materials have the potential to develop an N-CQDs-based thermo-sensitive device or sensor. |
| first_indexed | 2024-03-10T03:01:51Z |
| format | Article |
| id | doaj.art-81228a9c09354a33a20c864ff18c0c84 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-10T03:01:51Z |
| publishDate | 2022-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-81228a9c09354a33a20c864ff18c0c842023-11-23T12:45:13ZengMDPI AGPolymers2073-43602022-05-011410197010.3390/polym14101970Stimulus-Responsiveness of Thermo-Sensitive Polymer Hybridized with N-Doped Carbon Quantum Dots and Its Applications in Solvent Recognition and Fe<sup>3+</sup> Ion DetectionTong Chen0Hongwei Zhang1Sanping Zhao2State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan 430073, ChinaState Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan 430073, ChinaState Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan 430073, ChinaTo fabricate N-CQDs hybrid thermo-sensitive polymer (poly-N-CQDs), N-doped carbon quantum dots (N-CQDs) with strong blue fluorescence and poly(<i>N</i>-isopropylacrylamide-<i>co</i>-acrylic acid) (poly(NIPAAm-<i>co</i>-AAc)) copolymer with thermo-sensitivity were synthesized, respectively. Subsequently, the coupling reaction between. the -COOH groups of poly(NIPAAm-<i>co</i>-AAc) and the -NH<sub>2</sub> groups on the surface of the N-CQDs was carried out. The fluorescence spectra show that the coil-globule transition of the poly-N-CQDs coincided with intensity changes in the scattering peak at excitation wavelength with the temperature variations. The phase transition temperature and the fluorescent intensity of poly-N-CQDs can be regulated by modulating the composition and concentration of poly-N-CQDs as well as the temperature and pH of the local medium. The thermo-sensitivity and fluorescent properties of the poly-N-CQDs displayed good stability and reversibility. The fluorescence intensity and emission wavelengths of the poly-N-CQDs significantly changed in different solvents for solvent recognition. The poly-N-CQDs was employed as a fluorescent probe for Fe<sup>3+</sup> detection ranging from 0.025 to 1 mM with a limit of detection (LOD) of 9.49 μM. The hybrid polymer materials have the potential to develop an N-CQDs-based thermo-sensitive device or sensor.https://www.mdpi.com/2073-4360/14/10/1970N-doped carbon quantum dotsthermo-sensitive polymerphase transition temperaturesolvent recognitionion detection |
| spellingShingle | Tong Chen Hongwei Zhang Sanping Zhao Stimulus-Responsiveness of Thermo-Sensitive Polymer Hybridized with N-Doped Carbon Quantum Dots and Its Applications in Solvent Recognition and Fe<sup>3+</sup> Ion Detection Polymers N-doped carbon quantum dots thermo-sensitive polymer phase transition temperature solvent recognition ion detection |
| title | Stimulus-Responsiveness of Thermo-Sensitive Polymer Hybridized with N-Doped Carbon Quantum Dots and Its Applications in Solvent Recognition and Fe<sup>3+</sup> Ion Detection |
| title_full | Stimulus-Responsiveness of Thermo-Sensitive Polymer Hybridized with N-Doped Carbon Quantum Dots and Its Applications in Solvent Recognition and Fe<sup>3+</sup> Ion Detection |
| title_fullStr | Stimulus-Responsiveness of Thermo-Sensitive Polymer Hybridized with N-Doped Carbon Quantum Dots and Its Applications in Solvent Recognition and Fe<sup>3+</sup> Ion Detection |
| title_full_unstemmed | Stimulus-Responsiveness of Thermo-Sensitive Polymer Hybridized with N-Doped Carbon Quantum Dots and Its Applications in Solvent Recognition and Fe<sup>3+</sup> Ion Detection |
| title_short | Stimulus-Responsiveness of Thermo-Sensitive Polymer Hybridized with N-Doped Carbon Quantum Dots and Its Applications in Solvent Recognition and Fe<sup>3+</sup> Ion Detection |
| title_sort | stimulus responsiveness of thermo sensitive polymer hybridized with n doped carbon quantum dots and its applications in solvent recognition and fe sup 3 sup ion detection |
| topic | N-doped carbon quantum dots thermo-sensitive polymer phase transition temperature solvent recognition ion detection |
| url | https://www.mdpi.com/2073-4360/14/10/1970 |
| work_keys_str_mv | AT tongchen stimulusresponsivenessofthermosensitivepolymerhybridizedwithndopedcarbonquantumdotsanditsapplicationsinsolventrecognitionandfesup3supiondetection AT hongweizhang stimulusresponsivenessofthermosensitivepolymerhybridizedwithndopedcarbonquantumdotsanditsapplicationsinsolventrecognitionandfesup3supiondetection AT sanpingzhao stimulusresponsivenessofthermosensitivepolymerhybridizedwithndopedcarbonquantumdotsanditsapplicationsinsolventrecognitionandfesup3supiondetection |