Gold Nanostar-Based Sensitive Catechol Plasmonic Colorimetric Sensing Platform with Ultra-Wide Detection Range
High sensitivity and a wide detection range are always the pursuit of sensor design. In this work, gold nanostars (Au NSs) featuring the shape of sea urchins with an absorption peak at the near infrared region (822 nm) were prepared. We proposed a Au NSs-based plasmonic colorimetric sensing platform...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-10-01
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| Series: | Chemosensors |
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| Online Access: | https://www.mdpi.com/2227-9040/10/11/439 |
| _version_ | 1827646916782981120 |
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| author | Huafeng Wang Ting Fang Hua Liu Tianxiang Wei Zhihui Dai |
| author_facet | Huafeng Wang Ting Fang Hua Liu Tianxiang Wei Zhihui Dai |
| author_sort | Huafeng Wang |
| collection | DOAJ |
| description | High sensitivity and a wide detection range are always the pursuit of sensor design. In this work, gold nanostars (Au NSs) featuring the shape of sea urchins with an absorption peak at the near infrared region (822 nm) were prepared. We proposed a Au NSs-based plasmonic colorimetric sensing platform for ultrasensitive catechol (CC) detection with a wide detection range from 3.33 nM to 107 μM and a limit of detection (LOD) at 1 nM. The target analyte, CC, was used to reduce silver ions (Ag<sup>+</sup>) to form silver (Ag) coating on the surface of Au NSs, which caused a blue-shift in the localized surface plasmon resonance (LSPR) of Au NSs. With the gradual increase in CC concentration, the Ag coating on the surface was gradually nucleated, and the LSPR blue-shift carried on. This strategy yields a wide LSPR shift by as much as 276 nm for plasmonic effects, enabling an ultra-wide range and the ultrasensitive detection of CC. This work will facilitate the research of target-mediated LSPR sensors and their wide application in environmental monitoring, food safety, and disease diagnosis. |
| first_indexed | 2024-03-09T19:11:10Z |
| format | Article |
| id | doaj.art-3283411acc25497fbf54d3cee5c4d965 |
| institution | Directory Open Access Journal |
| issn | 2227-9040 |
| language | English |
| last_indexed | 2024-03-09T19:11:10Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Chemosensors |
| spelling | doaj.art-3283411acc25497fbf54d3cee5c4d9652023-11-24T04:10:14ZengMDPI AGChemosensors2227-90402022-10-01101143910.3390/chemosensors10110439Gold Nanostar-Based Sensitive Catechol Plasmonic Colorimetric Sensing Platform with Ultra-Wide Detection RangeHuafeng Wang0Ting Fang1Hua Liu2Tianxiang Wei3Zhihui Dai4Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, ChinaJiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, ChinaJiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, ChinaSchool of Environment, Nanjing Normal University, Nanjing 210023, ChinaJiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, ChinaHigh sensitivity and a wide detection range are always the pursuit of sensor design. In this work, gold nanostars (Au NSs) featuring the shape of sea urchins with an absorption peak at the near infrared region (822 nm) were prepared. We proposed a Au NSs-based plasmonic colorimetric sensing platform for ultrasensitive catechol (CC) detection with a wide detection range from 3.33 nM to 107 μM and a limit of detection (LOD) at 1 nM. The target analyte, CC, was used to reduce silver ions (Ag<sup>+</sup>) to form silver (Ag) coating on the surface of Au NSs, which caused a blue-shift in the localized surface plasmon resonance (LSPR) of Au NSs. With the gradual increase in CC concentration, the Ag coating on the surface was gradually nucleated, and the LSPR blue-shift carried on. This strategy yields a wide LSPR shift by as much as 276 nm for plasmonic effects, enabling an ultra-wide range and the ultrasensitive detection of CC. This work will facilitate the research of target-mediated LSPR sensors and their wide application in environmental monitoring, food safety, and disease diagnosis.https://www.mdpi.com/2227-9040/10/11/439gold nanostarcolorimetriccatechollocalized surface plasmon resonanceblue-shift |
| spellingShingle | Huafeng Wang Ting Fang Hua Liu Tianxiang Wei Zhihui Dai Gold Nanostar-Based Sensitive Catechol Plasmonic Colorimetric Sensing Platform with Ultra-Wide Detection Range Chemosensors gold nanostar colorimetric catechol localized surface plasmon resonance blue-shift |
| title | Gold Nanostar-Based Sensitive Catechol Plasmonic Colorimetric Sensing Platform with Ultra-Wide Detection Range |
| title_full | Gold Nanostar-Based Sensitive Catechol Plasmonic Colorimetric Sensing Platform with Ultra-Wide Detection Range |
| title_fullStr | Gold Nanostar-Based Sensitive Catechol Plasmonic Colorimetric Sensing Platform with Ultra-Wide Detection Range |
| title_full_unstemmed | Gold Nanostar-Based Sensitive Catechol Plasmonic Colorimetric Sensing Platform with Ultra-Wide Detection Range |
| title_short | Gold Nanostar-Based Sensitive Catechol Plasmonic Colorimetric Sensing Platform with Ultra-Wide Detection Range |
| title_sort | gold nanostar based sensitive catechol plasmonic colorimetric sensing platform with ultra wide detection range |
| topic | gold nanostar colorimetric catechol localized surface plasmon resonance blue-shift |
| url | https://www.mdpi.com/2227-9040/10/11/439 |
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