Organic-Inorganic Semiconductor Heterojunction P3HT@Ag<sub>2</sub>NCN Composite Film as a Recyclable SERS Substrate for Molecule Detection Application
Semiconductor composite materials have attracted interest from surface-enhanced Raman scattering (SERS) substrate research. Here, we investigate an organic-inorganic semiconductor heterojunction P3HT@Ag<sub>2</sub>NCN composite film as a recyclable SERS substrate for molecule detection a...
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| Format: | Article |
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MDPI AG
2022-11-01
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| Series: | Chemosensors |
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| Online Access: | https://www.mdpi.com/2227-9040/10/11/469 |
| _version_ | 1797468723820363776 |
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| author | Lin Xu Tao Wang Xuan Li Zhengjian Chen |
| author_facet | Lin Xu Tao Wang Xuan Li Zhengjian Chen |
| author_sort | Lin Xu |
| collection | DOAJ |
| description | Semiconductor composite materials have attracted interest from surface-enhanced Raman scattering (SERS) substrate research. Here, we investigate an organic-inorganic semiconductor heterojunction P3HT@Ag<sub>2</sub>NCN composite film as a recyclable SERS substrate for molecule detection application. Our study shows that the SERS substrate of the composite P3HT@Ag2NCN composite film has high sensitivity, excellent signal reproducibility, and is reusable. Significant π-stacking of the probe molecules with the thiophene π-cores molecules from P3HT plays an important role in the large SERS enhancement by the charge transfer mechanism. Due to physical interaction between P3HT and Ag<sub>2</sub>NCN, the organic-inorganic semiconductor heterojunction structure further improves charge transfer efficiency and the SERS property. Our results show that the enhancement factor (EF) of P3HT@Ag<sub>2</sub>NCN composite films (EF = 6147 ± 300) for the probe molecule methylene blue is more than 7 times that of P3HT substrate (EF = 848 ± 85) and is about 75 times that of Ag<sub>2</sub>NCN nanorods (EF = 82 ± 8). In addition, the SERS substrates of the P3HT@Ag<sub>2</sub>NCN composite film also display excellent reusability and signal reproducibility (<i>RSD</i> < 4.8%). Our study opens up a new opportunity for designing an ideal SERS substrate with high sensitivity, selectivity, long-term stability, low cost, and reusability. |
| first_indexed | 2024-03-09T19:10:58Z |
| format | Article |
| id | doaj.art-93cd940cac1b4a8fb56c35974f575f6c |
| institution | Directory Open Access Journal |
| issn | 2227-9040 |
| language | English |
| last_indexed | 2024-03-09T19:10:58Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Chemosensors |
| spelling | doaj.art-93cd940cac1b4a8fb56c35974f575f6c2023-11-24T04:10:44ZengMDPI AGChemosensors2227-90402022-11-01101146910.3390/chemosensors10110469Organic-Inorganic Semiconductor Heterojunction P3HT@Ag<sub>2</sub>NCN Composite Film as a Recyclable SERS Substrate for Molecule Detection ApplicationLin Xu0Tao Wang1Xuan Li2Zhengjian Chen3Biomaterials R&D Center, Zhuhai Institute of Advanced Technology, Chinese Academy of Sciences, Zhuhai 519003, ChinaCollege of Materials Science and Engineering, Donghua University, 2999 North Renmin Road, Shanghai 201620, ChinaBiomaterials R&D Center, Zhuhai Institute of Advanced Technology, Chinese Academy of Sciences, Zhuhai 519003, ChinaBiomaterials R&D Center, Zhuhai Institute of Advanced Technology, Chinese Academy of Sciences, Zhuhai 519003, ChinaSemiconductor composite materials have attracted interest from surface-enhanced Raman scattering (SERS) substrate research. Here, we investigate an organic-inorganic semiconductor heterojunction P3HT@Ag<sub>2</sub>NCN composite film as a recyclable SERS substrate for molecule detection application. Our study shows that the SERS substrate of the composite P3HT@Ag2NCN composite film has high sensitivity, excellent signal reproducibility, and is reusable. Significant π-stacking of the probe molecules with the thiophene π-cores molecules from P3HT plays an important role in the large SERS enhancement by the charge transfer mechanism. Due to physical interaction between P3HT and Ag<sub>2</sub>NCN, the organic-inorganic semiconductor heterojunction structure further improves charge transfer efficiency and the SERS property. Our results show that the enhancement factor (EF) of P3HT@Ag<sub>2</sub>NCN composite films (EF = 6147 ± 300) for the probe molecule methylene blue is more than 7 times that of P3HT substrate (EF = 848 ± 85) and is about 75 times that of Ag<sub>2</sub>NCN nanorods (EF = 82 ± 8). In addition, the SERS substrates of the P3HT@Ag<sub>2</sub>NCN composite film also display excellent reusability and signal reproducibility (<i>RSD</i> < 4.8%). Our study opens up a new opportunity for designing an ideal SERS substrate with high sensitivity, selectivity, long-term stability, low cost, and reusability.https://www.mdpi.com/2227-9040/10/11/469surface-enhanced Raman scatteringpolymer composite filmcharge transferphotocatalytic material |
| spellingShingle | Lin Xu Tao Wang Xuan Li Zhengjian Chen Organic-Inorganic Semiconductor Heterojunction P3HT@Ag<sub>2</sub>NCN Composite Film as a Recyclable SERS Substrate for Molecule Detection Application Chemosensors surface-enhanced Raman scattering polymer composite film charge transfer photocatalytic material |
| title | Organic-Inorganic Semiconductor Heterojunction P3HT@Ag<sub>2</sub>NCN Composite Film as a Recyclable SERS Substrate for Molecule Detection Application |
| title_full | Organic-Inorganic Semiconductor Heterojunction P3HT@Ag<sub>2</sub>NCN Composite Film as a Recyclable SERS Substrate for Molecule Detection Application |
| title_fullStr | Organic-Inorganic Semiconductor Heterojunction P3HT@Ag<sub>2</sub>NCN Composite Film as a Recyclable SERS Substrate for Molecule Detection Application |
| title_full_unstemmed | Organic-Inorganic Semiconductor Heterojunction P3HT@Ag<sub>2</sub>NCN Composite Film as a Recyclable SERS Substrate for Molecule Detection Application |
| title_short | Organic-Inorganic Semiconductor Heterojunction P3HT@Ag<sub>2</sub>NCN Composite Film as a Recyclable SERS Substrate for Molecule Detection Application |
| title_sort | organic inorganic semiconductor heterojunction p3ht ag sub 2 sub ncn composite film as a recyclable sers substrate for molecule detection application |
| topic | surface-enhanced Raman scattering polymer composite film charge transfer photocatalytic material |
| url | https://www.mdpi.com/2227-9040/10/11/469 |
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