Ultraviolet Carbon Nanodots Providing a Dual-Mode Spectral Matching Platform for Synergistic Enhancement of the Fluorescent Sensing
The sensing of chromium(VI) (Cr(VI)) is highly desired, due to its toxic and carcinogenic effects upon human health. Fluorescent probes, especially carbon nanodots (CNDs), have been widely used for Cr(VI) sensing via the inner filter effect (IFE). However, improving the sensitivity of these probes r...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-06-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/25/11/2679 |
| _version_ | 1827715326127636480 |
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| author | Liman Sai Shuping Jiao Jianwen Yang |
| author_facet | Liman Sai Shuping Jiao Jianwen Yang |
| author_sort | Liman Sai |
| collection | DOAJ |
| description | The sensing of chromium(VI) (Cr(VI)) is highly desired, due to its toxic and carcinogenic effects upon human health. Fluorescent probes, especially carbon nanodots (CNDs), have been widely used for Cr(VI) sensing via the inner filter effect (IFE). However, improving the sensitivity of these probes remains a difficult issue. In this work, CNDs derived from β-Lactoglobulin were applied as an ultrasensitive fluorescent probe for Cr(VI). With 260 nm excitation, the CNDs showed multi-band emission, including an ultraviolet 360 nm peak. The spectral matching of the CNDs with Cr(VI) led to synergistic suppression of both the excitation and emission light in the fluorescent sensing. As a consequence, the CNDs showed high sensitivity toward Cr(VI), the detection limit reaching as low as 20 nM. Moreover, taking advantage of the multi-emissive property of the CNDs, the synergistic effect was proven in an IFE-based sensing system, which might be extended to the design of other kinds of fluorescent probes. |
| first_indexed | 2024-03-10T19:15:40Z |
| format | Article |
| id | doaj.art-13d10ced381442f0ba4f55dbfbf55a71 |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-10T19:15:40Z |
| publishDate | 2020-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-13d10ced381442f0ba4f55dbfbf55a712023-11-20T03:21:00ZengMDPI AGMolecules1420-30492020-06-012511267910.3390/molecules25112679Ultraviolet Carbon Nanodots Providing a Dual-Mode Spectral Matching Platform for Synergistic Enhancement of the Fluorescent SensingLiman Sai0Shuping Jiao1Jianwen Yang2Department of Physics, Shanghai Normal University, Guilin Road 100, Shanghai 200234, ChinaSchool of Mechanics and Engineering Science, Shanghai University, Yanchang Road 149, Shanghai 200444, ChinaDepartment of Physics, Shanghai Normal University, Guilin Road 100, Shanghai 200234, ChinaThe sensing of chromium(VI) (Cr(VI)) is highly desired, due to its toxic and carcinogenic effects upon human health. Fluorescent probes, especially carbon nanodots (CNDs), have been widely used for Cr(VI) sensing via the inner filter effect (IFE). However, improving the sensitivity of these probes remains a difficult issue. In this work, CNDs derived from β-Lactoglobulin were applied as an ultrasensitive fluorescent probe for Cr(VI). With 260 nm excitation, the CNDs showed multi-band emission, including an ultraviolet 360 nm peak. The spectral matching of the CNDs with Cr(VI) led to synergistic suppression of both the excitation and emission light in the fluorescent sensing. As a consequence, the CNDs showed high sensitivity toward Cr(VI), the detection limit reaching as low as 20 nM. Moreover, taking advantage of the multi-emissive property of the CNDs, the synergistic effect was proven in an IFE-based sensing system, which might be extended to the design of other kinds of fluorescent probes.https://www.mdpi.com/1420-3049/25/11/2679carbon nanodotsfluorescent probeinner filter effectsynergistic effect |
| spellingShingle | Liman Sai Shuping Jiao Jianwen Yang Ultraviolet Carbon Nanodots Providing a Dual-Mode Spectral Matching Platform for Synergistic Enhancement of the Fluorescent Sensing Molecules carbon nanodots fluorescent probe inner filter effect synergistic effect |
| title | Ultraviolet Carbon Nanodots Providing a Dual-Mode Spectral Matching Platform for Synergistic Enhancement of the Fluorescent Sensing |
| title_full | Ultraviolet Carbon Nanodots Providing a Dual-Mode Spectral Matching Platform for Synergistic Enhancement of the Fluorescent Sensing |
| title_fullStr | Ultraviolet Carbon Nanodots Providing a Dual-Mode Spectral Matching Platform for Synergistic Enhancement of the Fluorescent Sensing |
| title_full_unstemmed | Ultraviolet Carbon Nanodots Providing a Dual-Mode Spectral Matching Platform for Synergistic Enhancement of the Fluorescent Sensing |
| title_short | Ultraviolet Carbon Nanodots Providing a Dual-Mode Spectral Matching Platform for Synergistic Enhancement of the Fluorescent Sensing |
| title_sort | ultraviolet carbon nanodots providing a dual mode spectral matching platform for synergistic enhancement of the fluorescent sensing |
| topic | carbon nanodots fluorescent probe inner filter effect synergistic effect |
| url | https://www.mdpi.com/1420-3049/25/11/2679 |
| work_keys_str_mv | AT limansai ultravioletcarbonnanodotsprovidingadualmodespectralmatchingplatformforsynergisticenhancementofthefluorescentsensing AT shupingjiao ultravioletcarbonnanodotsprovidingadualmodespectralmatchingplatformforsynergisticenhancementofthefluorescentsensing AT jianwenyang ultravioletcarbonnanodotsprovidingadualmodespectralmatchingplatformforsynergisticenhancementofthefluorescentsensing |