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Sun Y, Wang Q, Liu J, Zhao Z, Li L, Liu Z, Lu J, Jin L, Zhang S. Ratiometric Sensing of Intracellular pH Based on Dual Emissive Carbon Dots. J Fluoresc 2023; 33:653-661. [PMID: 36480126 DOI: 10.1007/s10895-022-03107-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Accepted: 11/28/2022] [Indexed: 12/13/2022]
Abstract
Accurate monitoring of intracellular pH in living cells is critical for developing a better understanding of cellular activities. In the current study, label-free carbon dots (p-CDs), which were fabricated using a straightforward one-pot solvothermal treatment of p-phenylenediamine and urea, were employed to create a new ratiometric pH nanosensor. Under single-wavelength excitation (λex = 500 nm), the p-CDs gave dual emission bands at 525 and 623 nm. The fluorescent intensity ratio (I525/I623) was linearly related to pH over the range 4.0 to 8.8 in buffer solutions, indicating that the ratiometric fluorescence nanoprobe may be useful for pH sensing. In pH measurements, the p-CDs also demonstrated outstanding selectivity, reversibility, and photostability. Owing to the advantages outlined above, the nanoprobe was used to monitor the pH of HeLa cells effectively. The label-free CD-based ratiometric nanoprobe features comparatively easy manufacturing and longer excitation and emission wavelengths than the majority of previously reported CD-based ratiometric pH sensors, which is ultimately beneficial for applications in biological imaging.
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Affiliation(s)
- Yanli Sun
- Shaanxi Key Laboratory of Catalysis, School of Chemistry and Environment Science, Shaanxi University of Technology, 723000, Hanzhong, Shaanxi, China
| | - Qin Wang
- Shaanxi Key Laboratory of Catalysis, School of Chemistry and Environment Science, Shaanxi University of Technology, 723000, Hanzhong, Shaanxi, China.
| | - Jin Liu
- Shaanxi Key Laboratory of Catalysis, School of Chemistry and Environment Science, Shaanxi University of Technology, 723000, Hanzhong, Shaanxi, China
| | - Zuoping Zhao
- Shaanxi Key Laboratory of Catalysis, School of Chemistry and Environment Science, Shaanxi University of Technology, 723000, Hanzhong, Shaanxi, China
| | - Lihua Li
- Shaanxi Key Laboratory of Catalysis, School of Chemistry and Environment Science, Shaanxi University of Technology, 723000, Hanzhong, Shaanxi, China
| | - Zhifeng Liu
- Shaanxi Key Laboratory of Catalysis, School of Chemistry and Environment Science, Shaanxi University of Technology, 723000, Hanzhong, Shaanxi, China
| | - Jiufu Lu
- Shaanxi Key Laboratory of Catalysis, School of Chemistry and Environment Science, Shaanxi University of Technology, 723000, Hanzhong, Shaanxi, China
| | - Lingxia Jin
- Shaanxi Key Laboratory of Catalysis, School of Chemistry and Environment Science, Shaanxi University of Technology, 723000, Hanzhong, Shaanxi, China
| | - Shengrui Zhang
- Shaanxi Key Laboratory of Catalysis, School of Chemistry and Environment Science, Shaanxi University of Technology, 723000, Hanzhong, Shaanxi, China.
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Wang P, Zhang Q, Liu D, Zhou Z, Wang P. Fluorometric assay of cyanophoric pyrethroids based on benzothiazole modified carbon quantum dots. NEW J CHEM 2023. [DOI: 10.1039/d3nj00465a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
Abstract
A fluorometric assay based on benzothiazole carbon quantum dots (benzothiazole-CDs) was developed for the determination of cyanophoric pyrethroids (CPs, e.g., cypermethrin, deltamethrin and fenpropathrin).
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Synthesis of N,S co-doped carbon dots for fluorescence detection of Fe3+ ions and intracellular pH imaging. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2022. [DOI: 10.1016/j.cjac.2022.100151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Xu Q, Cai H, Li W, Wu M, Wu Y, Gong X. Carbon dot/inorganic nanomaterial composites. JOURNAL OF MATERIALS CHEMISTRY A 2022. [DOI: 10.1039/d2ta02628g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The preparation methods, formation mechanism, properties and applications of carbon dot/inorganic nanohybrid materials are reported.
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Affiliation(s)
- Qingqing Xu
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China
| | - Huawei Cai
- Laboratory of Clinical Nuclear Medicine, Department of Nuclear Medicine, West China Hospital, Sichuan University, 610041, Chengdu, China
| | - Wenjing Li
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China
| | - Min Wu
- Huaxi MR Research Center (HMRRC), Department of Radiology, Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Yongzhong Wu
- School of Mechanical Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Xiao Gong
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China
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