Spiropyran-Based Soft Substrate with SPR, Anti-Reflection and Anti-NRET for Enhanced Visualization/Fluorescence Dual Response to Metal Ions
The photoluminescence of modified spiropyran on solid surfaces is poor, and the fluorescence intensity of its MC form is weak, which affects its application in the field of sensing. In this work, a PMMA layer containing Au nanoparticles and a spiropyran monomolecular layer are coated on the surface...
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MDPI AG
2023-05-01
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| Online Access: | https://www.mdpi.com/1996-1944/16/10/3746 |
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| author | Yuebo Jin Florian Ion Tiberiu Petrescu Yuan Wang Xin Li Ying Li Gang Shi |
| author_facet | Yuebo Jin Florian Ion Tiberiu Petrescu Yuan Wang Xin Li Ying Li Gang Shi |
| author_sort | Yuebo Jin |
| collection | DOAJ |
| description | The photoluminescence of modified spiropyran on solid surfaces is poor, and the fluorescence intensity of its MC form is weak, which affects its application in the field of sensing. In this work, a PMMA layer containing Au nanoparticles and a spiropyran monomolecular layer are coated on the surface of a PDMS substrate with inverted micro-pyramids successively by means of interface assembly and soft lithography, and the overall structure is similar to insect compound eyes. The anti-reflection effect of the bioinspired structure, the SPR (surface plasmon resonance) effect of the Au nanoparticles and the anti-NRET (non-radiation energy transfer) effect of the PMMA isolation layer raise the fluorescence enhancement factor of the composite substrate vs. the surface MC form of spiropyran to 5.06. In the process of metal ion detection, the composite substrate can achieve both colorimetric and fluorescence response, and the detection limit for Zn<sup>2+</sup> can reach 0.281 μM. However, at the same time, the lack of the ability to recognize specific metal ions is expected to be further improved by the modification of spiropyran. |
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| id | doaj.art-fcd86ee3bced4e969c1814612cef231e |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-11T03:32:58Z |
| publishDate | 2023-05-01 |
| publisher | MDPI AG |
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| series | Materials |
| spelling | doaj.art-fcd86ee3bced4e969c1814612cef231e2023-11-18T02:15:35ZengMDPI AGMaterials1996-19442023-05-011610374610.3390/ma16103746Spiropyran-Based Soft Substrate with SPR, Anti-Reflection and Anti-NRET for Enhanced Visualization/Fluorescence Dual Response to Metal IonsYuebo Jin0Florian Ion Tiberiu Petrescu1Yuan Wang2Xin Li3Ying Li4Gang Shi5The Key Laboratory of Synthetic and Biotechnology Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, ChinaDepartment of Mechanisms and Robots Theory, Bucharest Polytechnic University, 060042 Bucharest, RomaniaThe Key Laboratory of Synthetic and Biotechnology Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, ChinaThe Key Laboratory of Synthetic and Biotechnology Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, ChinaThe Key Laboratory of Synthetic and Biotechnology Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, ChinaThe Key Laboratory of Synthetic and Biotechnology Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, ChinaThe photoluminescence of modified spiropyran on solid surfaces is poor, and the fluorescence intensity of its MC form is weak, which affects its application in the field of sensing. In this work, a PMMA layer containing Au nanoparticles and a spiropyran monomolecular layer are coated on the surface of a PDMS substrate with inverted micro-pyramids successively by means of interface assembly and soft lithography, and the overall structure is similar to insect compound eyes. The anti-reflection effect of the bioinspired structure, the SPR (surface plasmon resonance) effect of the Au nanoparticles and the anti-NRET (non-radiation energy transfer) effect of the PMMA isolation layer raise the fluorescence enhancement factor of the composite substrate vs. the surface MC form of spiropyran to 5.06. In the process of metal ion detection, the composite substrate can achieve both colorimetric and fluorescence response, and the detection limit for Zn<sup>2+</sup> can reach 0.281 μM. However, at the same time, the lack of the ability to recognize specific metal ions is expected to be further improved by the modification of spiropyran.https://www.mdpi.com/1996-1944/16/10/3746bioinspiredspiropyranfluorescencevisualizationion detection |
| spellingShingle | Yuebo Jin Florian Ion Tiberiu Petrescu Yuan Wang Xin Li Ying Li Gang Shi Spiropyran-Based Soft Substrate with SPR, Anti-Reflection and Anti-NRET for Enhanced Visualization/Fluorescence Dual Response to Metal Ions Materials bioinspired spiropyran fluorescence visualization ion detection |
| title | Spiropyran-Based Soft Substrate with SPR, Anti-Reflection and Anti-NRET for Enhanced Visualization/Fluorescence Dual Response to Metal Ions |
| title_full | Spiropyran-Based Soft Substrate with SPR, Anti-Reflection and Anti-NRET for Enhanced Visualization/Fluorescence Dual Response to Metal Ions |
| title_fullStr | Spiropyran-Based Soft Substrate with SPR, Anti-Reflection and Anti-NRET for Enhanced Visualization/Fluorescence Dual Response to Metal Ions |
| title_full_unstemmed | Spiropyran-Based Soft Substrate with SPR, Anti-Reflection and Anti-NRET for Enhanced Visualization/Fluorescence Dual Response to Metal Ions |
| title_short | Spiropyran-Based Soft Substrate with SPR, Anti-Reflection and Anti-NRET for Enhanced Visualization/Fluorescence Dual Response to Metal Ions |
| title_sort | spiropyran based soft substrate with spr anti reflection and anti nret for enhanced visualization fluorescence dual response to metal ions |
| topic | bioinspired spiropyran fluorescence visualization ion detection |
| url | https://www.mdpi.com/1996-1944/16/10/3746 |
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