Highly Fluorescent Green Carbon Dots as a Fluorescent Probe for Detecting Mineral Water pH
In this report, high-brightness green carbon dots were successfully prepared using 3,5-diaminobenzoic acid as the sole precursor and synthesized in one step using a solvothermal strategy. Under the excitation of 365 nm ultraviolet light, the quantum yield of carbon dots is as high as 53.8%. Experime...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-09-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/19/17/3801 |
| _version_ | 1798025372190638080 |
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| author | Tingyu Wang Guoqing Chen Lei Li Yamin Wu |
| author_facet | Tingyu Wang Guoqing Chen Lei Li Yamin Wu |
| author_sort | Tingyu Wang |
| collection | DOAJ |
| description | In this report, high-brightness green carbon dots were successfully prepared using 3,5-diaminobenzoic acid as the sole precursor and synthesized in one step using a solvothermal strategy. Under the excitation of 365 nm ultraviolet light, the quantum yield of carbon dots is as high as 53.8%. Experiments revealed that the carbon dots are highly carbonized and the surface is rich in amino and carboxyl groups. The synthesized carbon dots have good water solubility, and are resistant to ions and temperature. The fluorescence intensity of CDs is sensitive to pH changes and is linearly correlated with the pH in the near-neutral range (pH = 6.0 to 9.0). Our experiments showed that carbon dots were sensitive and accurate fluorescent probes for measuring the pH value of drinking water, which could provide an effective method for measuring the pH value of water in the future. |
| first_indexed | 2024-04-11T18:17:45Z |
| format | Article |
| id | doaj.art-8deda0986a584afabc50d8e27804e952 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-11T18:17:45Z |
| publishDate | 2019-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-8deda0986a584afabc50d8e27804e9522022-12-22T04:09:50ZengMDPI AGSensors1424-82202019-09-011917380110.3390/s19173801s19173801Highly Fluorescent Green Carbon Dots as a Fluorescent Probe for Detecting Mineral Water pHTingyu Wang0Guoqing Chen1Lei Li2Yamin Wu3School of Science, Jiangnan University, Wuxi 214122, ChinaSchool of Science, Jiangnan University, Wuxi 214122, ChinaSchool of Science, Jiangnan University, Wuxi 214122, ChinaSchool of Science, Jiangnan University, Wuxi 214122, ChinaIn this report, high-brightness green carbon dots were successfully prepared using 3,5-diaminobenzoic acid as the sole precursor and synthesized in one step using a solvothermal strategy. Under the excitation of 365 nm ultraviolet light, the quantum yield of carbon dots is as high as 53.8%. Experiments revealed that the carbon dots are highly carbonized and the surface is rich in amino and carboxyl groups. The synthesized carbon dots have good water solubility, and are resistant to ions and temperature. The fluorescence intensity of CDs is sensitive to pH changes and is linearly correlated with the pH in the near-neutral range (pH = 6.0 to 9.0). Our experiments showed that carbon dots were sensitive and accurate fluorescent probes for measuring the pH value of drinking water, which could provide an effective method for measuring the pH value of water in the future.https://www.mdpi.com/1424-8220/19/17/3801carbon dotssolvothermal3,5-diaminobenzoic acidpHfluorescent probe |
| spellingShingle | Tingyu Wang Guoqing Chen Lei Li Yamin Wu Highly Fluorescent Green Carbon Dots as a Fluorescent Probe for Detecting Mineral Water pH Sensors carbon dots solvothermal 3,5-diaminobenzoic acid pH fluorescent probe |
| title | Highly Fluorescent Green Carbon Dots as a Fluorescent Probe for Detecting Mineral Water pH |
| title_full | Highly Fluorescent Green Carbon Dots as a Fluorescent Probe for Detecting Mineral Water pH |
| title_fullStr | Highly Fluorescent Green Carbon Dots as a Fluorescent Probe for Detecting Mineral Water pH |
| title_full_unstemmed | Highly Fluorescent Green Carbon Dots as a Fluorescent Probe for Detecting Mineral Water pH |
| title_short | Highly Fluorescent Green Carbon Dots as a Fluorescent Probe for Detecting Mineral Water pH |
| title_sort | highly fluorescent green carbon dots as a fluorescent probe for detecting mineral water ph |
| topic | carbon dots solvothermal 3,5-diaminobenzoic acid pH fluorescent probe |
| url | https://www.mdpi.com/1424-8220/19/17/3801 |
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