Facile Fluorescence “Turn on” Sensing of Lead Ions in Water via Carbon Nanodots Immobilized in Spherical Polyelectrolyte Brushes
Heavy metal detection has become very important for the protection of water resource. In this work, a novel controllable probe is presented for the sensitive detection of Pb2+ in aqueous solutions. The probe was synthesized via the immobilization of surface functionalized carbon dots (named as CAEA-...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2018-10-01
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| Series: | Frontiers in Chemistry |
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| Online Access: | https://www.frontiersin.org/article/10.3389/fchem.2018.00470/full |
| _version_ | 1819080433756798976 |
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| author | Yuchuan Tian Antonios Kelarakis Li Li Fang Zhao Yunwei Wang Weihua Wang Qingsong Yang Zhishuang Ye Xuhong Guo Xuhong Guo |
| author_facet | Yuchuan Tian Antonios Kelarakis Li Li Fang Zhao Yunwei Wang Weihua Wang Qingsong Yang Zhishuang Ye Xuhong Guo Xuhong Guo |
| author_sort | Yuchuan Tian |
| collection | DOAJ |
| description | Heavy metal detection has become very important for the protection of water resource. In this work, a novel controllable probe is presented for the sensitive detection of Pb2+ in aqueous solutions. The probe was synthesized via the immobilization of surface functionalized carbon dots (named as CAEA-Hs) into the shell of the spherical polyelectrolyte brushes (SPB). The fluorescence of CAEA-H was firstly “turned off” via electrostatic interaction induced quenching. Based on the aggregation induced emission enhancement (AIEE), the fluorescence of the immobilized CAEA-H could be specifically turned on via the aggregation of the SPB particles. This fluorescence “turn on” sensor could selectively detect Pb2+ among five different metal ions with a relatively wide detecting range (0–1.67 mM) and good linear relationship (R2 = 0.9958). Moreover, the aggregating behavior and nano-structure of CAEA-H loaded SPB have been systematically analyzed via small angle X-ray scattering, turbidity titration, and Zeta-potential measurement. Based on a series of control experiments, we finally gain an insight into the sensing mechanism of this novel sensing probe. This contributed a proof of concept demonstration that sensitive and selective chemical detection can be achieved via a C-dot/SPB synergistic platform. |
| first_indexed | 2024-12-21T19:44:49Z |
| format | Article |
| id | doaj.art-12c488756d6c444fa0f989d30dbdaabd |
| institution | Directory Open Access Journal |
| issn | 2296-2646 |
| language | English |
| last_indexed | 2024-12-21T19:44:49Z |
| publishDate | 2018-10-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Chemistry |
| spelling | doaj.art-12c488756d6c444fa0f989d30dbdaabd2022-12-21T18:52:21ZengFrontiers Media S.A.Frontiers in Chemistry2296-26462018-10-01610.3389/fchem.2018.00470417142Facile Fluorescence “Turn on” Sensing of Lead Ions in Water via Carbon Nanodots Immobilized in Spherical Polyelectrolyte BrushesYuchuan Tian0Antonios Kelarakis1Li Li2Fang Zhao3Yunwei Wang4Weihua Wang5Qingsong Yang6Zhishuang Ye7Xuhong Guo8Xuhong Guo9State-Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, ChinaSchool of Physical Sciences and Computing, University of Central Lancashire, Preston, United KingdomState-Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, ChinaState-Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, ChinaState-Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, ChinaThe Alle Chemical Company, Shandong, ChinaState-Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, ChinaState-Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, ChinaState-Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, ChinaEngineering Research Center of Materials Chemical Engineering of Xinjiang Bingtuan, Shihezi University, Shihezi, ChinaHeavy metal detection has become very important for the protection of water resource. In this work, a novel controllable probe is presented for the sensitive detection of Pb2+ in aqueous solutions. The probe was synthesized via the immobilization of surface functionalized carbon dots (named as CAEA-Hs) into the shell of the spherical polyelectrolyte brushes (SPB). The fluorescence of CAEA-H was firstly “turned off” via electrostatic interaction induced quenching. Based on the aggregation induced emission enhancement (AIEE), the fluorescence of the immobilized CAEA-H could be specifically turned on via the aggregation of the SPB particles. This fluorescence “turn on” sensor could selectively detect Pb2+ among five different metal ions with a relatively wide detecting range (0–1.67 mM) and good linear relationship (R2 = 0.9958). Moreover, the aggregating behavior and nano-structure of CAEA-H loaded SPB have been systematically analyzed via small angle X-ray scattering, turbidity titration, and Zeta-potential measurement. Based on a series of control experiments, we finally gain an insight into the sensing mechanism of this novel sensing probe. This contributed a proof of concept demonstration that sensitive and selective chemical detection can be achieved via a C-dot/SPB synergistic platform.https://www.frontiersin.org/article/10.3389/fchem.2018.00470/fullspherical polyelectrolyte brushesSAXScarbon dotsfluorescence sensorlead ions |
| spellingShingle | Yuchuan Tian Antonios Kelarakis Li Li Fang Zhao Yunwei Wang Weihua Wang Qingsong Yang Zhishuang Ye Xuhong Guo Xuhong Guo Facile Fluorescence “Turn on” Sensing of Lead Ions in Water via Carbon Nanodots Immobilized in Spherical Polyelectrolyte Brushes Frontiers in Chemistry spherical polyelectrolyte brushes SAXS carbon dots fluorescence sensor lead ions |
| title | Facile Fluorescence “Turn on” Sensing of Lead Ions in Water via Carbon Nanodots Immobilized in Spherical Polyelectrolyte Brushes |
| title_full | Facile Fluorescence “Turn on” Sensing of Lead Ions in Water via Carbon Nanodots Immobilized in Spherical Polyelectrolyte Brushes |
| title_fullStr | Facile Fluorescence “Turn on” Sensing of Lead Ions in Water via Carbon Nanodots Immobilized in Spherical Polyelectrolyte Brushes |
| title_full_unstemmed | Facile Fluorescence “Turn on” Sensing of Lead Ions in Water via Carbon Nanodots Immobilized in Spherical Polyelectrolyte Brushes |
| title_short | Facile Fluorescence “Turn on” Sensing of Lead Ions in Water via Carbon Nanodots Immobilized in Spherical Polyelectrolyte Brushes |
| title_sort | facile fluorescence turn on sensing of lead ions in water via carbon nanodots immobilized in spherical polyelectrolyte brushes |
| topic | spherical polyelectrolyte brushes SAXS carbon dots fluorescence sensor lead ions |
| url | https://www.frontiersin.org/article/10.3389/fchem.2018.00470/full |
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