Design and Study of a Photo-Switchable Polymeric System in the Presence of ZnS Nanoparticles under the Influence of UV Light Irradiation
Recent progress in the field of photosensitive materials has prompted a need to develop efficient methods to synthesize materials with basic intermolecular architectural designs and novel properties. Accordingly, in this work we design and study a photoactive polymer as a photo-switchable polymeric...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-02-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/14/5/945 |
| _version_ | 1797474056953397248 |
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| author | Guadalupe del C. Pizarro Wilson Alavia Karen González Héctor Díaz Oscar G. Marambio Rudy Martin-Trasanco Julio Sánchez Diego P. Oyarzún Andrónico Neira-Carrillo |
| author_facet | Guadalupe del C. Pizarro Wilson Alavia Karen González Héctor Díaz Oscar G. Marambio Rudy Martin-Trasanco Julio Sánchez Diego P. Oyarzún Andrónico Neira-Carrillo |
| author_sort | Guadalupe del C. Pizarro |
| collection | DOAJ |
| description | Recent progress in the field of photosensitive materials has prompted a need to develop efficient methods to synthesize materials with basic intermolecular architectural designs and novel properties. Accordingly, in this work we design and study a photoactive polymer as a photo-switchable polymeric system in the presence and absence of ZnS nanoparticles (average size < 10 nm) at 5 wt.%. The influence of UV light irradiation on its properties were also studied. The photoactive block copolymer was obtained from styrene (S) and methyl methacrylate (MMA) as monomers and 1-(2-hydroxyethyl)-3,3-dimethylindoline-6-nitrobenzopyran (<i>SP</i>) was grafted to the block copolymer backbone as a photochromic agent. Furthermore, the incorporation of ZnS (NPs) as photo-optical switch component into the system enhances the purple colored photo-emission, with the open form of the spiropyran derivative (merocyanine, MC). The ZnS stabilize the isomeric equilibrium in the <i>MC</i> interconversion of the photochromic agent. The photo-switchable properties of the PS-<i>b</i>-PMMA-<i>SP</i> in the presence of ZnS (NPs) were examined using UV-VIS spectroscopy, Photoluminescence (PL) spectroscopy, optical fluorescence and scanning electronic microscopy (SEM-EDX.). The observed changes in the absorbance, fluorescence and morphology of the system were associated to the reversible interconversion of the two states of the photochromic agent which regulates the radiative deactivation of the luminescent ZnS NPs component. After UV irradiation the photoactive polymer becomes purple in color. Therefore, these basic studies can lead to the development of innovative functional and nanostructured materials with photosensitive character as photosensitive molecular switches. |
| first_indexed | 2024-03-09T20:25:45Z |
| format | Article |
| id | doaj.art-f0db5ad144f54eab90aa09978937496d |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-09T20:25:45Z |
| publishDate | 2022-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-f0db5ad144f54eab90aa09978937496d2023-11-23T23:38:41ZengMDPI AGPolymers2073-43602022-02-0114594510.3390/polym14050945Design and Study of a Photo-Switchable Polymeric System in the Presence of ZnS Nanoparticles under the Influence of UV Light IrradiationGuadalupe del C. Pizarro0Wilson Alavia1Karen González2Héctor Díaz3Oscar G. Marambio4Rudy Martin-Trasanco5Julio Sánchez6Diego P. Oyarzún7Andrónico Neira-Carrillo8Departamento de Química, Facultad de Ciencias Naturales, Matemáticas y Medio Ambiente, Universidad Tecnológica Metropolitana, Santiago 7800003, ChileDepartamento de Química, Facultad de Ciencias Naturales, Matemáticas y Medio Ambiente, Universidad Tecnológica Metropolitana, Santiago 7800003, ChileDepartamento de Química, Facultad de Ciencias Naturales, Matemáticas y Medio Ambiente, Universidad Tecnológica Metropolitana, Santiago 7800003, ChileDepartamento de Química, Facultad de Ciencias Naturales, Matemáticas y Medio Ambiente, Universidad Tecnológica Metropolitana, Santiago 7800003, ChileDepartamento de Química, Facultad de Ciencias Naturales, Matemáticas y Medio Ambiente, Universidad Tecnológica Metropolitana, Santiago 7800003, ChileDepartamento de Química, Facultad de Ciencias Naturales, Matemáticas y Medio Ambiente, Universidad Tecnológica Metropolitana, Santiago 7800003, ChileDepartamento de Ciencias del Ambiente, Facultad de Química y Biología, Universidad de Santiago de Chile, USACH, Santiago 9170022, ChileLaboratorio de Nanotecnología, Recursos Naturales y Sistemas Complejos, Facultad de Ciencias Naturales, Universidad de Atacama, Copiapó 1530000, ChileDepartamento de Ciencias Biológicas, Facultad de Ciencias Veterinarias y Pecuarias, Universidad de Chile, Santiago 7800003, ChileRecent progress in the field of photosensitive materials has prompted a need to develop efficient methods to synthesize materials with basic intermolecular architectural designs and novel properties. Accordingly, in this work we design and study a photoactive polymer as a photo-switchable polymeric system in the presence and absence of ZnS nanoparticles (average size < 10 nm) at 5 wt.%. The influence of UV light irradiation on its properties were also studied. The photoactive block copolymer was obtained from styrene (S) and methyl methacrylate (MMA) as monomers and 1-(2-hydroxyethyl)-3,3-dimethylindoline-6-nitrobenzopyran (<i>SP</i>) was grafted to the block copolymer backbone as a photochromic agent. Furthermore, the incorporation of ZnS (NPs) as photo-optical switch component into the system enhances the purple colored photo-emission, with the open form of the spiropyran derivative (merocyanine, MC). The ZnS stabilize the isomeric equilibrium in the <i>MC</i> interconversion of the photochromic agent. The photo-switchable properties of the PS-<i>b</i>-PMMA-<i>SP</i> in the presence of ZnS (NPs) were examined using UV-VIS spectroscopy, Photoluminescence (PL) spectroscopy, optical fluorescence and scanning electronic microscopy (SEM-EDX.). The observed changes in the absorbance, fluorescence and morphology of the system were associated to the reversible interconversion of the two states of the photochromic agent which regulates the radiative deactivation of the luminescent ZnS NPs component. After UV irradiation the photoactive polymer becomes purple in color. Therefore, these basic studies can lead to the development of innovative functional and nanostructured materials with photosensitive character as photosensitive molecular switches.https://www.mdpi.com/2073-4360/14/5/945light-sensitive materialsspiropyransphotoactive polymeric systemmorphological surface characteristicphoto-switchable properties |
| spellingShingle | Guadalupe del C. Pizarro Wilson Alavia Karen González Héctor Díaz Oscar G. Marambio Rudy Martin-Trasanco Julio Sánchez Diego P. Oyarzún Andrónico Neira-Carrillo Design and Study of a Photo-Switchable Polymeric System in the Presence of ZnS Nanoparticles under the Influence of UV Light Irradiation Polymers light-sensitive materials spiropyrans photoactive polymeric system morphological surface characteristic photo-switchable properties |
| title | Design and Study of a Photo-Switchable Polymeric System in the Presence of ZnS Nanoparticles under the Influence of UV Light Irradiation |
| title_full | Design and Study of a Photo-Switchable Polymeric System in the Presence of ZnS Nanoparticles under the Influence of UV Light Irradiation |
| title_fullStr | Design and Study of a Photo-Switchable Polymeric System in the Presence of ZnS Nanoparticles under the Influence of UV Light Irradiation |
| title_full_unstemmed | Design and Study of a Photo-Switchable Polymeric System in the Presence of ZnS Nanoparticles under the Influence of UV Light Irradiation |
| title_short | Design and Study of a Photo-Switchable Polymeric System in the Presence of ZnS Nanoparticles under the Influence of UV Light Irradiation |
| title_sort | design and study of a photo switchable polymeric system in the presence of zns nanoparticles under the influence of uv light irradiation |
| topic | light-sensitive materials spiropyrans photoactive polymeric system morphological surface characteristic photo-switchable properties |
| url | https://www.mdpi.com/2073-4360/14/5/945 |
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