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Shanmugavel A, Rene ER, Balakrishnan SP, Krishnakumar N, Jose SP. Heavy metal ion sensing strategies using fluorophores for environmental remediation. ENVIRONMENTAL RESEARCH 2024; 260:119544. [PMID: 38969312 DOI: 10.1016/j.envres.2024.119544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Revised: 05/27/2024] [Accepted: 07/01/2024] [Indexed: 07/07/2024]
Abstract
The main aim of this review is to provide a holistic summary of the latest advances within the research area focusing on the detection of heavy metal ion pollution, particularly the sensing strategies. The review explores various heavy metal ion detection approaches, encompassing spectrometry, electrochemical methods, and optical techniques. Numerous initiatives have been undertaken in recent times in response to the increasing demand for fast, sensitive, and selective sensors. Notably, fluorescent sensors have acquired prominence owing to the numerous advantages such as good specificity, reversibility, and sensitivity. Further, this review also explores the advantages of various nanomaterials employed in sensing heavy metal ions. In this regard, exclusive emphasis is placed on fluorescent nanomaterials based on organic dyes, quantum dots, and fluorescent aptasensors for metal ion removal from aqueous systems, and to identify the fate of heavy metal ions in the natural environment.
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Affiliation(s)
- Abinaya Shanmugavel
- School of Physics, Madurai Kamaraj University, Madurai, 625021, Tamil Nadu, India
| | - Eldon R Rene
- Department of Water Supply, Sanitation and Environmental Engineering, IHE Delft Institute for Water Education, Westvest 7, 2601DA, Delft, the Netherlands
| | | | | | - Sujin P Jose
- School of Physics, Madurai Kamaraj University, Madurai, 625021, Tamil Nadu, India.
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2
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Kong J, Wei Y, Zhou F, Shi L, Zhao S, Wan M, Zhang X. Carbon Quantum Dots: Properties, Preparation, and Applications. Molecules 2024; 29:2002. [PMID: 38731492 PMCID: PMC11085940 DOI: 10.3390/molecules29092002] [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: 03/14/2024] [Revised: 04/13/2024] [Accepted: 04/24/2024] [Indexed: 05/13/2024] Open
Abstract
Carbon quantum dots are a novel form of carbon material. They offer numerous benefits including particle size adjustability, light resistance, ease of functionalization, low toxicity, excellent biocompatibility, and high-water solubility, as well as their easy accessibility of raw materials. Carbon quantum dots have been widely used in various fields. The preparation methods employed are predominantly top-down methods such as arc discharge, laser ablation, electrochemical and chemical oxidation, as well as bottom-up methods such as templates, microwave, and hydrothermal techniques. This article provides an overview of the properties, preparation methods, raw materials for preparation, and the heteroatom doping of carbon quantum dots, and it summarizes the applications in related fields, such as optoelectronics, bioimaging, drug delivery, cancer therapy, sensors, and environmental remediation. Finally, currently encountered issues of carbon quantum dots are presented. The latest research progress in synthesis and application, as well as the challenges outlined in this review, can help and encourage future research on carbon quantum dots.
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Affiliation(s)
| | | | | | | | | | | | - Xiangfeng Zhang
- School of Medicine, Henan Polytechnic University, Jiaozuo 454000, China; (Y.W.); (F.Z.); (L.S.); (S.Z.); (M.W.)
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3
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Emam HE. Carbon quantum dots derived from polysaccharides: Chemistry and potential applications. Carbohydr Polym 2024; 324:121503. [PMID: 37985091 DOI: 10.1016/j.carbpol.2023.121503] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Revised: 10/02/2023] [Accepted: 10/14/2023] [Indexed: 11/22/2023]
Abstract
Since the beginning of 21th century, nanoscience and nanotechnology become the most promising topics in various fields, attributing to the superior characters of nanoscaled structures. The conventional quantum dots are substituted with new family of luminescent nanostructures, owing to their interchanged optical properties, low-cost of fabrication, biocompatibility, non-toxicity, ecofriendly, hydrophilicity and superior chemical stability. Carbon quantum dots (CQDs) were recently investigated for their simple synthesis, bio-consonance, and different revelation applicability. Obeying the green chemistry aspects, this review demonstrates an overview about CQDs generated from polysaccharides in brief, with a background on CQDs discovery, chemical composition, green synthesis via exploitation of different polysaccharides (cellulose, starch, pectin, chitin, etc) as biocompatible/biodegradable abundant biopolymers. Additionally, applications of CQDs originated from polysaccharides in environmental purposes, textiles industry and medical activities were also presented.
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Affiliation(s)
- Hossam E Emam
- Department of Pretreatment and Finishing of Cellulosic Fibers, Textile Research and Technology Institute, National Research Centre, Scopus Affiliation ID 60014618, 33 EL Buhouth St., Dokki, Giza 12622, Egypt.
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4
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Khan WU, Qin L, Zhou P, Alam A, Ge Z, Wang Y. Zero Thermal Quenching Phenomenon of Green Emitting Carbon Dots with High Biocompatibility and Stable Multicolor Biological Imaging in a Hot Environment. ACS APPLIED MATERIALS & INTERFACES 2023; 15:45616-45625. [PMID: 37729491 DOI: 10.1021/acsami.3c09688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/22/2023]
Abstract
Carbon dots are emerging fluorescent nanomaterials with unique physical and chemical properties and a wide range of applications. Herein, we have designed and successfully synthesized thermally stable green emissive nitrogen-doped carbon dots (NCDs) with a photoluminescent quantum yield of 11.32% through facile solvent-free carbonization. NCDs demonstrated zero thermal quenching upon various temperatures modulating from 20 to 80 °C. The green emissive NCDs perform very stably even after heating them at 80 °C for 1 h. The thermal stability mechanism demonstrates that C═O and C═N functional groups control the particle aggregation and protect the fluorescent hub from photo-oxidation and thermal oxidation. Highly biocompatible CDs exhibit bright, stable, and multicolor emissions in T-ca cells under hot circumstances (25-45 °C). Additionally, NCDs offer long-term stability in the biosystem, as evidenced by the fact that the cell retains its brightness about 70% after prolonging the incubation time to 8 days. Furthermore, the fluorescent NCDs are utilized as in vivo imaging agents in the hot environment as they display bright and thermally stable imaging (27-45 °C) under 488 nm excitation. The results confirmed that the produced thermally stable NCDs could be used in biology and related medical fields that require hot environment imaging.
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Affiliation(s)
- Waheed Ullah Khan
- National and Local Joint Engineering Laboratory of Optical-Conversion Materials and Technology, and School of Materials and Energy, Lanzhou University, Lanzhou 730000, P.R. China
- Institute for Advanced Study, and School of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, P.R. China
| | - Liying Qin
- School of Stomatology, Lanzhou University, Lanzhou 730000, P. R. China
| | - Ping Zhou
- School of Stomatology, Lanzhou University, Lanzhou 730000, P. R. China
| | - Abid Alam
- National and Local Joint Engineering Laboratory of Optical-Conversion Materials and Technology, and School of Materials and Energy, Lanzhou University, Lanzhou 730000, P.R. China
| | - Zhangjie Ge
- School of Stomatology, Lanzhou University, Lanzhou 730000, P. R. China
| | - Yuhua Wang
- National and Local Joint Engineering Laboratory of Optical-Conversion Materials and Technology, and School of Materials and Energy, Lanzhou University, Lanzhou 730000, P.R. China
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Salem M, Khan AM, Manea YK, Saleh HA, Ahmad M. Carbon Nanotubes Decorated with Coordination Polymers for Fluorescence Detection of Heavy-Metal Ions and Nitroaromatic Chemicals. ACS OMEGA 2023; 8:1220-1231. [PMID: 36643482 PMCID: PMC9835182 DOI: 10.1021/acsomega.2c06209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Accepted: 12/08/2022] [Indexed: 06/17/2023]
Abstract
Herein, [Nd(NO3)3(H2pzdca)] n (MA-1) was synthesized from a reaction of 2,3-pyrazinedicarboxylic acid [H2Pzdca] as an organic linker with salt of Nd(III) under solvothermal conditions. The detailed structural analysis for crystals was performed utilizing single-crystal X-ray diffraction (SCXRD). After that, the neodymium-based coordination polymer (MA-1) crystal was directly generated upon the surface of functionalized carbon nanotubes (F-CNTs) through bonds or affinity between F-CNTs and MA-1 via the solvothermal approach. Meanwhile, the existence of F-CNTs does not affect the production of MA-1 crystals. FT-IR, PXRD, SEM, TEM, and SCXRD studies were used to characterize the crystalline material, MA-1 and MA-1@CNT. To investigate the MA-1@CNT sensing properties, Pb(II), As(III), Cr(VI), and nitrobenzene (NB) were utilized as analytes. It is worth mentioning that MA-1@CNT developed as a susceptible sensor exhibits a fluorescence "turn-on" response for Pb(II) and As(III) ions, while a fluorescence "turn-off" response in the case of Cr(VI) and NB with significantly low limit of detection (LOD) values of 15.9 for Pb(II), 16.0 for As(III), 76.9 for Cr(VI), and 21.1 nM for NB, which are comparable with the lowest LOD available in the literature. Furthermore, MA-1@CNT could be conveniently regenerated and reused for at least three cycles by simply filtering and washing with water several times. The sensing mechanism is ascribed to the inner filter effect owing to the overlap between the emission and/or excitation bands of MA-1@CNT with the absorption bands of Cr(VI) and NB. In contrast, the fluorescence enhancement in the case of Pb(II) and As(III) could be correlated to the chelation-enhanced fluorescence phenomenon. These results indicate that MA-1@CNT is an ideal sensor for Pb(II), As(III), Cr(VI), and NB recognition.
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Affiliation(s)
- Mansour
A.S. Salem
- Department
of Chemistry, Aligarh Muslim University, Aligarh 202002, India
- Department
of Chemistry, University of Aden, Aden 6312, Yemen
| | - Amjad Mumtaz Khan
- Department
of Chemistry, Aligarh Muslim University, Aligarh 202002, India
| | | | - Hatem A.M. Saleh
- Department
of Chemistry, Aligarh Muslim University, Aligarh 202002, India
| | - Musheer Ahmad
- Department
of Applied Chemistry (ZHCET), Aligarh Muslim
University, Aligarh 202002, India
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Guo XR, Dong YM, Chen XY, Chen J. Sophorajaponica L. flower mediated carbon dots with nitrogen and sulfur co-doped as a sensitive fluorescent probe for amoxicillin detection. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 282:121703. [PMID: 35933781 DOI: 10.1016/j.saa.2022.121703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 07/27/2022] [Accepted: 07/29/2022] [Indexed: 06/15/2023]
Abstract
This article first reported the green synthesis of N, S co-doped fluorescent carbon dots (N, S-CDs-Sop) and sought to establish the fluorescence detection system for amoxicillin (AMX). By using Sophorajaponica L. flower as the green precursor and dl-homocystine as the co-dopant, N, S-CDs-Sop were successfully prepared via a one-pot hydrothermal method, exhibiting good water solubility and excellent photoluminescence. It was revealed that the surface of N, S-CDs-Sop was abundant in amino, hydroxyl and carboxyl groups after being characterized by a variety of techniques. When Fe3+ was added, Fe3+ could be complexed with N, S-CDs-Sop to from N, S-CDs-Sop-Fe3+ chelation leading to a significant static quenching of fluorescence. However, when N, S-CDs-Sop, Fe3+ and AMX coexisted, AMX would coordinate with Fe3+ and form the strong chelate due to the favorable chemical structure, resulting in the rapid fluorescence recovery. Such a fast, simple and sensitive fluorescence "off-on" strategy with a low LOD and a relatively wide range was successfully applied to the detection of AMX, which is closely correlated with human health.
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Affiliation(s)
- Xin-Ran Guo
- Institute of Pharmaceutical Analysis, School of Pharmacy, Lanzhou University, Lanzhou 730030, China
| | - Yu-Ming Dong
- Institute of Pharmaceutical Analysis, School of Pharmacy, Lanzhou University, Lanzhou 730030, China
| | - Xin-Yue Chen
- Institute of Pharmaceutical Analysis, School of Pharmacy, Lanzhou University, Lanzhou 730030, China.
| | - Juan Chen
- Institute of Pharmaceutical Analysis, School of Pharmacy, Lanzhou University, Lanzhou 730030, China.
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7
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Wang H, Liu Y, Wu Y, Zhou Q, Li Z, Jiang L, Chen C. Reliable strategy of sensitive fluorescent nanoprobe for sensing silver nanoparticles using specific carbon dots derived from mercaptoacetic acid and melamine. CHEMOSPHERE 2022; 308:136268. [PMID: 36058370 DOI: 10.1016/j.chemosphere.2022.136268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Revised: 06/16/2022] [Accepted: 08/27/2022] [Indexed: 06/15/2023]
Abstract
Nitrogen and sulfur element co-decorated carbon nanodots (N,S-CDs) were synthesized by solid state hydrothermal method utilizing mercaptoacetic acid and melamine as the precursors. The obtained N,S-CDs had wonderful optical and chemical stability. The experimental results demonstrated that silver nanoparticles (AgNPs) could noticeably quench the fluorescence of N,S-CDs. The quenching of fluorescence signal from the presence of AgNPs may be attributed to inner filter effect. The crafted nanoprobe for sensing AgNPs was endowed with some specialties such as simplicity, excellent selectivity and sensitivity, environmental friendliness and low cost. The probe exhibited specific linearity from 0.024 to 1.77 nM, and was endowed a good limit of detection down to 0.022 nM. The experimental results demonstrated that the built probe could be an efficient tool for AgNPs detection and had a prospective application, and also provided a new direction for establishing innovative method for determining and monitoring pollutants from nanoparticles.
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Affiliation(s)
- Hongyuan Wang
- State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering and Environment, China University of Petroleum-Beijing, Beijing, 102249, China
| | - Yongli Liu
- State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering and Environment, China University of Petroleum-Beijing, Beijing, 102249, China; School of Environment, Henan Normal University, Xinxiang, 453007, PR China
| | - Yalin Wu
- State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering and Environment, China University of Petroleum-Beijing, Beijing, 102249, China; Beijing Municipal Research Institute of Environmental Protection, Beijing 100037, China
| | - Qingxiang Zhou
- State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering and Environment, China University of Petroleum-Beijing, Beijing, 102249, China.
| | - Zhi Li
- State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering and Environment, China University of Petroleum-Beijing, Beijing, 102249, China
| | - Liushan Jiang
- State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering and Environment, China University of Petroleum-Beijing, Beijing, 102249, China
| | - Chunmao Chen
- State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering and Environment, China University of Petroleum-Beijing, Beijing, 102249, China.
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8
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Ju J, Zhang X, Li L, Regmi S, Yang G, Tang S. Development of fluorescent lateral flow immunoassay for SARS-CoV-2-specific IgM and IgG based on aggregation-induced emission carbon dots. Front Bioeng Biotechnol 2022; 10:1042926. [PMID: 36312540 PMCID: PMC9608551 DOI: 10.3389/fbioe.2022.1042926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Accepted: 09/28/2022] [Indexed: 11/13/2022] Open
Abstract
Understanding the dynamic changes in antibodies against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is essential for evaluating the effectiveness of the vaccine and the stage for the recovery of the COVID-19 disease. A rapid and accurate method for the detection of SARS-CoV-2-specific antibodies is still urgently needed. Here, we developed a novel fluorescent lateral flow immunoassay (LFA) platform for the detection of SARS-CoV-2-specific IgM and IgG by the aggregation-induced emission carbon dots conjugated with the SARS-CoV-2 spike protein (SSP). The aggregation-induced emission carbon dots (AIE-CDs) are one of the best prospect fluorescent probe materials for exhibiting high emission efficiency in both aggregate and solid states. The AIE-CDs were synthesized and displayed dual fluorescence emission, which provides a new perspective for the design of a high sensitivity testing system. In this work, the novel LFA platform adopted the AIE carbon dots, which are used to detect SARS-CoV-2-specific IgM and IgG conveniently. Furthermore, this sensor had a low LOD of 100 pg/ml. Therefore, this newly developed strategy has potential applications in the areas of public health for the advancement of clinical research.
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Affiliation(s)
- Jian Ju
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, China
- Oujiang Lab, Wenzhou, China
- *Correspondence: Jian Ju, ; Guoqiang Yang, ; Shixing Tang,
| | - Xinyu Zhang
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, China
| | - Lin Li
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, China
- School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou, China
| | - Sagar Regmi
- Department of Pharmacology, School of Medicine, Case Western Reserve University, Cleveland, OH, United States
| | - Guoqiang Yang
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, China
- School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou, China
- Key Laboratory of Photochemistry, Institute of Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, China
- *Correspondence: Jian Ju, ; Guoqiang Yang, ; Shixing Tang,
| | - Shixing Tang
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, China
- Department of Epidemiology, School of Public Health, Southern Medical University, Guangzhou, China
- *Correspondence: Jian Ju, ; Guoqiang Yang, ; Shixing Tang,
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Huang J, Deng Z, Ding C, Jin Y, Wang B, Chen J. Peroxyoxalate/carbon dots chemiluminescent reaction for fluorescent and visual determination of Fe3+. Microchem J 2022. [DOI: 10.1016/j.microc.2022.107782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Metallic deep eutectic solvents-assisted synthesis of Cu, Cl-doped carbon dots as oxidase-like and peroxidase-like nanozyme for colorimetric assay of hydroquinone and H2O2. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129390] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Chen S, Ouyang W, Zhu Y, He L, Zou L, Ao X, Liu S, Yang Y, Li J. Facile Synthesis of N, S-Doped Carbon Quantum Dots from Food Waste as Fluorescent Probe for Sensitive Detection of Thiamphenicol and Its Analogues in Real Food Samples along with an Application in Bioimaging. Foods 2022; 11:foods11162414. [PMID: 36010413 PMCID: PMC9407342 DOI: 10.3390/foods11162414] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Revised: 08/03/2022] [Accepted: 08/07/2022] [Indexed: 12/03/2022] Open
Abstract
Herein, N, S co-doped carbon quantum dots (N, S-CDs) with high absolute quantitative yield (Abs-QY) of 50.2% were produced by hydrothermal treatment of food residue crayfish shells. A new detection method of thiamphenicol (TAP) and its analogues was established by discovering the obvious fluorescence response between TAP and N, S-CDs, which achieved a wide linear range of 20–300 μg·L−1 with a detection limit (LOD) of 11.12 μg·L−1. This novel probe exhibited strong sensitivity and shows rapid response in complex food matrices (overall detection time is less than 45 min) mainly induced by static quenching. Spiked food sample recovery ranged from 97.3 to 99.34%. Further, the cell experiments of N, S-CDs were conducted, and the cell viability remained 91.76% under high concentration of N, S-CDs due to the environmentally friendly materials. The low cytotoxicity and good cytocompatibility make these N, S-CDs compatible for cell bioimaging and intracellular detection of TAP.
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Affiliation(s)
- Shujuan Chen
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China
- Correspondence: ; Tel.: +86-0835-2882311
| | - Wanlin Ouyang
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China
- Yi’yang Agricultural Products Quality Inspection and Testing Center, Yi’yang 413000, China
| | - Yiting Zhu
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China
| | - Li He
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China
| | - Likou Zou
- College of Resources, Sichuan Agricultural University, Chengdu 611130, China
| | - Xiaolin Ao
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China
| | - Shuliang Liu
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China
| | - Yong Yang
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China
| | - Jianlong Li
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China
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12
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A fluorescence probe of sulfur quantum dots for sensitive detection of copper ions in Paris polyphylla var. yunnanensis. Microchem J 2022. [DOI: 10.1016/j.microc.2022.107639] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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13
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Somaraj G, Mathew S, Abraham T, Ambady KG, Mohan C, Mathew B. Nitrogen and Sulfur Co‐Doped Carbon Quantum Dots for Sensing Applications: A Review. ChemistrySelect 2022. [DOI: 10.1002/slct.202200473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Gayathri Somaraj
- School of chemical Sciences Mahatma Gandhi University Kottayam India
| | - Sneha Mathew
- School of chemical Sciences Mahatma Gandhi University Kottayam India
| | - Thomas Abraham
- Department of Chemistry Catholicate College Pathanamthitta Kerala India
| | - K. G. Ambady
- Department of Special Education National Institute for the Empowerment of Persons with Intellectual Disabilities Telangana India
| | - Chitra Mohan
- School of chemical Sciences Mahatma Gandhi University Kottayam India
| | - Beena Mathew
- School of chemical Sciences Mahatma Gandhi University Kottayam India
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Bardhan S, Roy S, Das S, Saha I, Mondal D, Roy J, Kr Chanda D, Das S, Karmakar P, Das S. Real-time sensitive detection of Cr (VI) in industrial wastewater and living cells using carbon dot decorated natural kyanite nanoparticles. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 273:121061. [PMID: 35219272 DOI: 10.1016/j.saa.2022.121061] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Revised: 01/30/2022] [Accepted: 02/16/2022] [Indexed: 06/14/2023]
Abstract
This article reports a facile strategy to detect hexavalent chromium (Cr (VI)) using a naturally formed mineral (kyanite) based fluorometric sensor. Nitrogenous carbon dots have been incorporated into natural kyanite (KYCD) nanoparticles causing a stable bright blue fluorescence compared to its pristine counterpart. This sensing probe structurally stabilizes and resists the agglomeration of carbon dots, thus retaining fluorescence quality for a longer period. The promising bright blue fluorescence has been utilized further to detect Cr (VI) in wastewater and living cells. Ease of synthesis, low cost, and stability of the system offers the benefit for large-scale production, which is convenient for industrial production the sensing probe. The sensor shows high selectivity and sensitivity (LOD and LOQ of 0.11 µM and 0.36 µM respectively in case of linear fitting, whereas 0.26 µM and 0.88 µM respectively for full range plot) towards hexavalent chromium in presence of other interfering elements. A detailed study of photoinduced electron transfer (PET) mediated rapid 'turn off' sensing mechanism was carried out using Time-Dependent Density functional (TDDFT) calculations. The sensing efficacy of the probe remains unaltered under a wide range of pH and can be effective in various water types. Onsite sampling and probing of Cr (VI) in tannery wastewater has been performed to validate its real-life efficiency that yields excellent results. The sensor can effectively detect chromium at a cellular level (HeLa cells) in a similar way as the bright blue fluorescence diminishes in presence of the quenching ion. Experimental in vitro studies along with theoretical docking analysis has been conducted to substantiate such issues and a higher possibility of fluorophore binding was found for Isoleucine (2.9 Å), Serine (2.96 Å), and Glycine (3.16 Å). This biocompatible sensor rapidly senses hexavalent chromium in living cells, which makes this efficient probe a true heavy metal-induced carcinogen sensor.
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Affiliation(s)
- Souravi Bardhan
- Department of Physics, Jadavpur University, Kolkata 700032, India
| | - Shubham Roy
- Department of Physics, Jadavpur University, Kolkata 700032, India
| | - Sanghita Das
- Department of Physics, Jadavpur University, Kolkata 700032, India
| | - Ishita Saha
- Department of Life Science and Biotechnology, Jadavpur University, Kolkata 700032, India
| | - Dhananjoy Mondal
- Department of Physics, Jadavpur University, Kolkata 700032, India
| | - Jhilik Roy
- Department of Physics, Jadavpur University, Kolkata 700032, India
| | - Dipak Kr Chanda
- School of Materials Science and Nano-Technology, Jadavpur University, Kolkata 700032, India
| | - Solanky Das
- Department of Geology, Jadavpur University, Kolkata 700032, India
| | - Parimal Karmakar
- Department of Life Science and Biotechnology, Jadavpur University, Kolkata 700032, India
| | - Sukhen Das
- Department of Physics, Jadavpur University, Kolkata 700032, India.
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15
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El Sharkasy ME, Tolba MM, Belal F, Walash MI, Aboshabana R. Thiosemicarbazide functionalized carbon quantum dots as a fluorescent probe for the determination of some oxicams: application to dosage forms and biological fluids. RSC Adv 2022; 12:13826-13836. [PMID: 35541436 PMCID: PMC9081828 DOI: 10.1039/d2ra01040b] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Accepted: 04/25/2022] [Indexed: 11/21/2022] Open
Abstract
In this study, highly fluorescent water-soluble nitrogen and sulfur doped carbon quantum dots (N, S-CQDs) were synthesized via a one-step hydrothermal process utilizing citric acid as a carbon source and thiosemicarbazide as a sulfur and nitrogen source. The obtained N, S-CQDs exhibited an intense emission band at 415 nm (λ ex = 345 nm). In the presence of either piroxicam, tenoxicam or lornoxicam, the emission band at 415 nm was significantly quenched which might be triggered due to destruction of the surface passivation layer of the N, S-CQDs. A linear correlation was found between the reduction in the fluorescence intensity of N, S-CQDs and the concentration of each drug in the ranges of 2.0-25.0 μM, 10.0-100.0 μM and 20.0-200.0 μM with correlation coefficients of more than 0.999 for all drugs. The detection limits were 0.49 μM, 1.58 μM and 4.63 μM for piroxicam, tenoxicam and lornoxicam, respectively. The effect of experimental parameters affecting the performance of the method was investigated and optimized. The developed sensor has the advantages of simplicity, time-saving, convenience and satisfactory selectivity for determination of the studied drugs in dosage forms with high % recoveries (98.86-101.69%). The method was extended for determination of piroxicam in spiked plasma with % recoveries ranging from 97.95-101.36%. The method was validated in accordance with International Council of Harmonization (ICH) standards, and the results obtained were compared statistically to those given by reported methods, indicating no significant differences in the level of accuracy and precision. The mechanism of the quenching process was studied and elucidated. The structure-activity relationship between the three drugs and the quenching efficiency was also studied and discussed.
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Affiliation(s)
- Mona E El Sharkasy
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Mansoura University 35516, Mansoura Egypt
| | - Manar M Tolba
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Mansoura University 35516, Mansoura Egypt
| | - Fathalla Belal
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Mansoura University 35516, Mansoura Egypt
| | - Mohamed I Walash
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Mansoura University 35516, Mansoura Egypt
| | - Rasha Aboshabana
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Mansoura University 35516, Mansoura Egypt
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16
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M A, John BK, Chacko AR, Mohan C, Mathew B. A Review on Carbon Quantum Dot Based Semiconductor Photocatalysts for the Abatement of Refractory Pollutants. Chemphyschem 2022; 23:e202100873. [PMID: 35320623 DOI: 10.1002/cphc.202100873] [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: 12/08/2021] [Revised: 03/15/2022] [Indexed: 11/10/2022]
Abstract
Photocatalysis is a green approach frequently utilised to eliminate a variety of environmentally hazardous refractory pollutants. Accordingly, the modification of semiconductor photocatalysts with Carbon Quantum Dots (CQDs) is of great importance for the treatment of such pollutants due to their attractive physical and chemical properties. CQDs are a perfect candidate to handle photocatalysts of high-performance since they operate as co-catalysts and as visible light harvesters. The higher separation rate of electron-hole pairs in the photocatalytic system is attributable to better photodegradation efficiency. This review classifies CQD based photocatalysts as pure, doped and composite materials and discusses the specific advantages of CQDs in visible light-driven photocatalysis. In this work, the versatile roles of CQDs in CQD-based photocatalytic systems are thoroughly discussed and s u mmarised.
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Affiliation(s)
- Athulya M
- Mahatma Gandhi University, School of Chemical Sciences, INDIA
| | - Bony K John
- Mahatma Gandhi University, School of Chemical Sciences, INDIA
| | - Anu Rose Chacko
- Mahatma Gandhi University, School of Chemical Sciences, INDIA
| | - Chitra Mohan
- Mahatma Gandhi University, School of Chemical Sciences, INDIA
| | - Beena Mathew
- Mahatma Gandhi University, School Of Chemical Sciences, Priyadarshini Hills PO, Kottayam, 686560, Kottayam, INDIA
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17
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Wang M, Su Y, Liu Y, Liang Y, Wu S, Zhou N, Shen J. Antibacterial fluorescent nano-sized lanthanum-doped carbon quantum dot embedded polyvinyl alcohol for accelerated wound healing. J Colloid Interface Sci 2022; 608:973-983. [PMID: 34785472 DOI: 10.1016/j.jcis.2021.10.018] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2021] [Revised: 10/03/2021] [Accepted: 10/04/2021] [Indexed: 12/31/2022]
Abstract
Bacteria is one of the main culprits that cause human diseases and pose long-term challenges to people's health. Rare earth elements have unique antibacterial advantages, but little research is available. In this paper, we reported an antibacterial composite film based on lanthanum-doped carbon quantum dot nanoparticles (La@N-P-CQDs) and polyvinyl alcohol (PVA) film for fluorescence of antibiotics and accelerating wound healing. PVA/La@N-P-CQDs composite film presented excellent hydrophilicity, biocompatibility, fluorescence intensity, and antibacterial effects. The antibacterial activity of La@N-P-CQDs was evaluated by employing antibacterial assay using Escherichia coli (E.coli)and Staphylococcus aureus (S.aureus) in vitro. La@N-P-CQDs showed enhanced antibacterial activity compared with N-P-CQDs. Moreover, the PVA/La@N-P-CQDs composite film with 0.5 mg/mL La@N-P-CQDs showed better antibacterial capability and wound healing performance than PVA and PVA/N-P-CQDs films in bacterial adhesion experiment. PVA/La@N-P-CQDs composite film could be used for wound dressing in vivo experiment and had no side effects on major organs in mice. The antibacterial composite film significantly promoted in vivo wound healing process because of its multifunctional properties. Therefore, it was an excellent candidate for wound dressing.
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Affiliation(s)
- Mingqian Wang
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, 210023 Nanjing, China
| | - Yutian Su
- Jiangsu Engineering Research Center of Interfacial Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Avenue, Qixia District, Nanjing 210023, China
| | - Yihan Liu
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, 210023 Nanjing, China
| | - Ying Liang
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, 210023 Nanjing, China
| | - Shishan Wu
- Jiangsu Engineering Research Center of Interfacial Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Avenue, Qixia District, Nanjing 210023, China
| | - Ninglin Zhou
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, 210023 Nanjing, China.
| | - Jian Shen
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, 210023 Nanjing, China; Jiangsu Engineering Research Center of Interfacial Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Avenue, Qixia District, Nanjing 210023, China.
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18
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Bhatt S, Vyas G, Paul P. Microwave-assisted synthesis of nitrogen-doped carbon dots using prickly pear as the carbon source and its application as a highly selective sensor for Cr(VI) and as a patterning agent. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2022; 14:269-277. [PMID: 34985051 DOI: 10.1039/d1ay01274f] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Preparation of water-dispersible carbon dots from inexpensive natural carbon precursors and its application for purposes such as sensing, bio-imaging and patterning agents is showing growing interest in recent years. In this study, we have reported the preparation of nitrogen-doped carbon dots (N-CDs) using prickly pear as the carbon source and m-xylylenediamine as the nitrogen source using a one-step microwave-assisted synthetic process. The N-CDs prepared were characterized on the basis of elemental analysis, XPS, powder-XRD, FT-IR, Raman, TEM, UV-vis and fluorescence spectroscopy. Doping of nitrogen in the N-CDs made them highly fluorescent and the study on their ion-recognition property revealed that they detect highly toxic Cr(VI) with high selectivity and sensitivity (LOD, 0.04 μM) and without interference from the other ions used in this study. By immobilizing these N-CDs onto filter paper, sensor strips were prepared for on-site monitoring/field applications and they were successfully used for the detection of Cr(VI) in water. Detailed spectral analysis revealed that the mechanism of Cr(VI) sensing involved a phenomenon called the "inner filter effect" and analysis of the fluorescence lifetime data suggested the "static quenching" of fluorescence intensity. These N-CDs were used to prepare fluorescent carbon ink and were successfully used as patterning agents.
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Affiliation(s)
- Shreya Bhatt
- Analytical and Environmental Science Division, Centralized Instrument Facility, CSIR-Central Salt and Marine Chemicals Research Institute, G. B. Marg, Bhavnagar 364002, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Gaurav Vyas
- Analytical and Environmental Science Division, Centralized Instrument Facility, CSIR-Central Salt and Marine Chemicals Research Institute, G. B. Marg, Bhavnagar 364002, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Parimal Paul
- Analytical and Environmental Science Division, Centralized Instrument Facility, CSIR-Central Salt and Marine Chemicals Research Institute, G. B. Marg, Bhavnagar 364002, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
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19
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Kaushik J, Tripathi KM, Singh R, Sonkar SK. Thiourea-functionalized graphene aerogel for the aqueous phase sensing of toxic Pb(II) metal ions and H 2O 2. CHEMOSPHERE 2022; 287:132105. [PMID: 34826890 DOI: 10.1016/j.chemosphere.2021.132105] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 08/06/2021] [Accepted: 08/29/2021] [Indexed: 06/13/2023]
Abstract
A simpler approach of functionalization for the fabrication of thiourea-functionalized-Graphene Aerogel (t-GA) is described here. Graphene Aerogel (GA) was synthesized from bio-mass, which on a simpler oxidative treatment get converted to its water-soluble version due to the impregnation of several oxygenous functionalities like carboxylic, hydroxyl, etc. Further, these carboxylated groups have been functionalized with the molecules of thiourea using the long known dicyclohexylcarbodiimide (DCC) as a coupling agent. The as-synthesized t-GA shows bright yellow fluorescence with a quantum yield of ~3% and holds the high-aqueous solubility and photostability. The fluorescence property of t-GA has been used here for the specific and selective sensing of toxic lead (Pb(II)) metal ions from the used many other metal ions via the fluorescence quenching and showed a limit of detection ~7.3 nM. Further, the mechanism for selective sensing was studied in detail and found to be preferable via ligand to metal charge transfer quenching mechanism. The cyclic voltammetry studies supported the selective sensing of Pb(II). Moreover, t-GA has also been studied for the sensing of hydrogen peroxide and as a yellow fluorescent ink.
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Affiliation(s)
- Jaidev Kaushik
- Department of Chemistry, Malaviya National Institute of Technology Jaipur, Jaipur, 302017, Rajasthan, India
| | - Kumud Malika Tripathi
- Department of Chemistry, Indian Institute of Petroleum and Energy, Visakhapatnam, 530003, Andhra Pradesh, India
| | - Ravindra Singh
- Department of Chemistry, Maharani Shri Jaya Government Post-Graduate College, Bharatpur, Rajasthan, 321001, India
| | - Sumit Kumar Sonkar
- Department of Chemistry, Malaviya National Institute of Technology Jaipur, Jaipur, 302017, Rajasthan, India.
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20
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Zhu T, Cao L, Zhou Z, Guo H, Ge M, Dong WF, Li L. Ultra-bright carbon quantum dots for rapid cell staining. Analyst 2022; 147:2558-2566. [DOI: 10.1039/d2an00325b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
A schematic illustration of the synthesis of G-CDs and cell imaging under one-photon and two-photon conditions.
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Affiliation(s)
- Tongtong Zhu
- School of Biomedical Engineering (Suzhou), Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230026, P. R. China
- CAS Key Laboratory of Biomedical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Science (CAS), Suzhou 215163, P. R. China
| | - Lei Cao
- School of Biomedical Engineering (Suzhou), Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230026, P. R. China
- CAS Key Laboratory of Biomedical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Science (CAS), Suzhou 215163, P. R. China
| | - Zhenqiao Zhou
- CAS Key Laboratory of Biomedical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Science (CAS), Suzhou 215163, P. R. China
| | - Hanzhou Guo
- Changchun Guoke Medical Engineer and Technology Development Co., Ltd, Changchun 13003, China
| | - Mingfeng Ge
- CAS Key Laboratory of Biomedical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Science (CAS), Suzhou 215163, P. R. China
| | - Wen-Fei Dong
- School of Biomedical Engineering (Suzhou), Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230026, P. R. China
- CAS Key Laboratory of Biomedical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Science (CAS), Suzhou 215163, P. R. China
| | - Li Li
- CAS Key Laboratory of Biomedical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Science (CAS), Suzhou 215163, P. R. China
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21
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Chang P, Wu LJ, Yuan X, Yukun B, Dan Y, Wu G, An M, Zhao L. Construction of a ratiometric fluorescence sensing platform based on DES-CDs/CoOOH/OPD system for ascorbic acid detection. NEW J CHEM 2022. [DOI: 10.1039/d2nj02066a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, a ratiometric fluorescence sensing platform based on deep eutectic solvent-carbon dots (DES-CDs) was constructed to efficiently determine ascorbic acid (AA). The CDs were synthesized by hydrothermal method using green...
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22
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Moradi M, Molaei R, Kousheh SA, T Guimarães J, McClements DJ. Carbon dots synthesized from microorganisms and food by-products: active and smart food packaging applications. Crit Rev Food Sci Nutr 2021; 63:1943-1959. [PMID: 34898337 DOI: 10.1080/10408398.2021.2015283] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Nanotechnology is rapidly becoming a commercial reality for application in food packaging. In particular, the incorporation of nanoparticles into packaging materials is being used to increase the shelf life and safety of foods. Carbon dots (C-dots) have a diverse range of potential applications in food packaging. They can be synthesized from environmentally friendly sources such as microorganisms, food by-products, and waste streams, or they may be generated in foods during normal processing operations, such as cooking. These processes often produce nitrogen- and sulfur-rich heteroatom-doped C-dots, which are beneficial for certain applications. The incorporation of C-dots into food packaging materials can improve their mechanical, barrier, and preservative properties. Indeed, C-dots have been used as antioxidant, antimicrobial, photoluminescent, and UV-light blocker additives in food packaging materials to reduce the chemical deterioration and inhibit the growth of pathogenic and spoilage microorganisms in foods. This article reviews recent progress on the synthesis of C-dots from microorganisms and food by-products of animal origin. It then highlights their potential application for the development of active and intelligent food packaging materials. Finally, a discussion of current challenges and future trends is given.
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Affiliation(s)
- Mehran Moradi
- Department of Food Hygiene and Quality Control, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran
| | - Rahim Molaei
- Department of Food Hygiene and Quality Control, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran
| | - Seyedeh Alaleh Kousheh
- Department of Food Hygiene and Quality Control, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran
| | - Jonas T Guimarães
- Department of Food Technology, Faculty of Veterinary Medicine, Federal Fluminense University (UFF), Niterói, Rio de Janeiro, Brazil
| | - David Julian McClements
- Department of Food Science, University of Massachusetts Amherst, Amherst, Massachusetts, USA
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23
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Zhao H, Zhang J, Lin X, Li H, Pan Q. Synthesis of 4-dimethylaminobenzyl chrysin ester-Zn fluorescent chemical sensor for the determination of Cr(VI) in water. LUMINESCENCE 2021; 37:72-81. [PMID: 34634179 DOI: 10.1002/bio.4147] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 09/26/2021] [Accepted: 10/01/2021] [Indexed: 11/07/2022]
Abstract
Cr(VI) is a type of dangerous effluent that has caused great harm to human health and the environment. Recognition and perception of Cr(VI) by artificial receptors has attracted extensive attention. A novel fluorescent chemical sensor based on the 5,7-dihydroxyflavone skeleton was designed and synthesized for the selective recognition of Cr(VI). As confirmed by fluorescence technology, the fluorescent probe 4-dimethylaminobenzyl chrysin ester-Zn (DBC-Zn) showed high sensitivity and selectivity for dichromate and a fast response (less than 30 sec) recognition. The fluorescence intensity of DBC-Zn varies linearly with the concentration of Cr(VI) in the range 0.1-1 μM. The detection limit of Cr2 O7 2- by DBC-Zn is 2.3 nM, which is far lower than the national safe drinking water standard stipulated by the US Environmental Protection Agency (1.9 μM). The quenching mechanism of the probe can be attributed to the interaction of the dynamic quenching effect and the fluorescence internal filtration effect. In addition, the probe has good stability in both neutral and alkaline environments, and the accuracy of quantitative analysis of Cr2 O7 2- in lake water or tap water is more than 80%. The test paper based on DBC-Zn can effectively detect Cr2 O7 2- at the concentration of 100 ppb. This shows that the probe has a certain practical application value.
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Affiliation(s)
- Haonan Zhao
- School of Science, Hainan University, Haikou, 570228, China
| | - Junfeng Zhang
- School of Science, Hainan University, Haikou, 570228, China
| | - Xiaolian Lin
- School of Science, Hainan University, Haikou, 570228, China
| | - Huihui Li
- School of Science, Hainan University, Haikou, 570228, China
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012, China
| | - Qinhe Pan
- School of Science, Hainan University, Haikou, 570228, China
- School of Chemical Engineering and Technology, Hainan University, Haikou, 570228, China
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24
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Khan WU, Qin L, Alam A, Zhou P, Peng Y, Wang Y. Fluorescent Carbon Dots an Effective Nano-Thermometer in Vitro Applications. ACS APPLIED BIO MATERIALS 2021; 4:5786-5796. [PMID: 35006753 DOI: 10.1021/acsabm.1c00528] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Fluorescent sensing of temperature in nanoscale regions has many advantages and applications in the biological field. Herein, blue emitting carbon dots (CDs) are designed and successfully developed using a one step hydrothermal method. As synthesized CDs exhibit temperature dependent photoluminescent (PL) intensity and PL decay lifetime over the physiological temperature ranging from room temperature (RT) to 70 °C. The PL intensity and PL decay lifetime of the obtained CDs correlate linearly to temperature (RT-70 °C) with correlation coefficient of 0.997 and 0.996, respectively. Additionally, dual mode thermal sensing (PL intensity/lifetime) make these CDs a promising optical nanothermometer over alternative semiconductors quantum dots and CD-based quantum dots. Moreover, the resultant aqueous CDs demonstrate excitation-independent blue emission, and the PL quantum yield (QY) is reached at 44.5%. The obtained CDs illustrate stable performance to high ionic environments and photobleaching even after keeping them for 2 h under continues UV irradiation. Furthermore, blue emitting CDs have low cytotoxicity for T-ca. cells and illuminate deep blue fluorescence under the excitation of 406 nm. As a result, high thermal sensitivity of these fluorescent CDs has potential to detect temperature in living cells in the range of 25-40 °C.
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Affiliation(s)
- Waheed Ullah Khan
- National and Local Joint Engineering Laboratory of Optical-Conversion Materials and Technology, School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, P.R. China
| | - Liying Qin
- School of Stomotology, Lanzhou University, Lanzhou 730000, P.R. China
| | - Abid Alam
- National and Local Joint Engineering Laboratory of Optical-Conversion Materials and Technology, School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, P.R. China
| | - Ping Zhou
- School of Stomotology, Lanzhou University, Lanzhou 730000, P.R. China
| | - Yong Peng
- Key Laboratory of Magnetism and Magnetic Materials of the Ministry of Education, School of Physical Science and Technology and Electron Microscope Center of Lanzhou University, Lanzhou 730000, P.R. China
| | - Yuhua Wang
- National and Local Joint Engineering Laboratory of Optical-Conversion Materials and Technology, School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, P.R. China
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25
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Liu Y, Cao L, Zan M, Peng J, Wang P, Pang X, Zhang Y, Li L, Dong WF, Mei Q. Cyan-emitting silicon quantum dots as a fluorescent probe directly used for highly sensitive and selective detection of chlorogenic acid. Talanta 2021; 233:122465. [PMID: 34215102 DOI: 10.1016/j.talanta.2021.122465] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 04/12/2021] [Accepted: 04/23/2021] [Indexed: 11/19/2022]
Abstract
As an important bioactive component in plants, chlorogenic acid (CGA) has been widely studied for its potential role in human health. In this work, cyan fluorescent silicon quantum dots were successfully synthesized via a simple one-pot method for the rapid detection of CGA. The optimal excitation and emission wavelength of the obtained SiQDs was 350 nm and 470 nm, respectively. When the CGA was added, the maximum emission intensity of the SiQDs can be effectively quenched due to dynamic and static mixed quenching mechanisms. More significantly, there was a remarkable linear correlation between fluorescence quenching efficiency and a broad concentration of CGA solution range from 10 to 150 μmol/L with a limit of detection (LOD) of 0.43 μmol/L. Furthermore, the proposed SiQDs were successfully applied to analyze CGA in coffee beans and instant coffee after simple pretreatment with satisfactory results. Based on these, a high sensitivity and excellent selectivity fluorescent probe detection system was constructed, and it provides a valuable platform for the detection of CGA and has broad application prospects in the biological and pharmaceutical analysis field.
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Affiliation(s)
- Yulu Liu
- School of Biomedical Engineering (Suzhou), Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230026, China; CAS Key Laboratory of Biomedical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Science (CAS), Suzhou, 215163, China
| | - Lei Cao
- School of Biomedical Engineering (Suzhou), Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230026, China; CAS Key Laboratory of Biomedical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Science (CAS), Suzhou, 215163, China
| | - Minghui Zan
- CAS Key Laboratory of Biomedical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Science (CAS), Suzhou, 215163, China
| | - Jiahui Peng
- School of Biomedical Engineering (Suzhou), Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230026, China; CAS Key Laboratory of Biomedical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Science (CAS), Suzhou, 215163, China
| | - Panyong Wang
- School of Biomedical Engineering (Suzhou), Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230026, China; CAS Key Laboratory of Biomedical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Science (CAS), Suzhou, 215163, China
| | - Xinpei Pang
- School of Biomedical Engineering (Suzhou), Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230026, China; CAS Key Laboratory of Biomedical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Science (CAS), Suzhou, 215163, China
| | - Yan Zhang
- CAS Key Laboratory of Biomedical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Science (CAS), Suzhou, 215163, China
| | - Li Li
- CAS Key Laboratory of Biomedical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Science (CAS), Suzhou, 215163, China.
| | - Wen-Fei Dong
- CAS Key Laboratory of Biomedical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Science (CAS), Suzhou, 215163, China
| | - Qian Mei
- CAS Key Laboratory of Biomedical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Science (CAS), Suzhou, 215163, China.
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26
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Wang B, Ji Y, Xia Y, Qin K, Li B. The exploitation of thermophile resources in hot springs: fluorescent carbon dots derived from Ureibacillus thermosphaericus for multicolour cellular imaging and selectivity detection of heavy metals. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2021; 13:1810-1815. [PMID: 33885673 DOI: 10.1039/d0ay02213f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Microbial biomass, as an environmentally friendly resource, has attracted considerable attention as a green biomaterial for the production of unique and functionalised CDs; however, further exploration is required to characterise CDs derived from bacteria. In this study, a green biomaterial (fluorescence CDs-HS18) was successfully synthesised via a hydrothermal method from Ureibacillus thermosphaericus HS-18 specimens isolated from a hot spring. The prepared CDs-HS18 possess excellent photo-physical properties, outstanding fluorescence capabilities, and high biocompatibility, which make them desirable candidates for multi-mode imaging applications. Our results demonstrate that the prepared CDs can selectively stain the membrane of the biological cells tested and can be rapidly distributed to all parts of the leaf via the veins and intercellular interstitium through transpiration. Additionally, CDs-HS18 are likely to enter the digestive tract of Microworms through ingestion and spread rapidly through the entire body and may finally be excreted through the anus. Furthermore, the rapid and highly selective detection platform based on CDs-HS18 exhibited an excellent linear response for Cr6+ between 0 and 9 μM, with a detection limit of 36 nM. This research will expand the understanding of the characteristics of green biomaterials derived from bacteria and widen the application scope of hot spring resources.
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Affiliation(s)
- Bin Wang
- Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650500, China. and City College, Kunming University of Science and Technology, Kunming 650500, China
| | - Yang Ji
- Shenzhen Institute of Respiratory Diseases, Second Clinical Medical College (Shenzhen People's Hospital), Jinan University, The First Affiliated Hospital (Shenzhen People's Hospital), Southern University of Science and Technology, Shenzhen 518000, China
| | - Yonghua Xia
- City College, Kunming University of Science and Technology, Kunming 650500, China
| | - Kunhao Qin
- Shenzhen Institute of Respiratory Diseases, Second Clinical Medical College (Shenzhen People's Hospital), Jinan University, The First Affiliated Hospital (Shenzhen People's Hospital), Southern University of Science and Technology, Shenzhen 518000, China
| | - Bo Li
- Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650500, China.
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Wang X, Gao S, Xu N, Xu L, Chen S, Mei C, Xu C. Facile synthesis of phosphorus‐nitrogen doped carbon quantum dots from cyanobacteria for bioimaging. CAN J CHEM ENG 2021. [DOI: 10.1002/cjce.23927] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Xi Wang
- Jiangsu Co‐Innovation Centre of Efficient Processing and Utilization of Forest Products, Nanjing Forestry University Nanjing People's Republic of China
- College of Materials Science and Engineering, Nanjing Forestry University Nanjing People's Republic of China
- Jiangsu Province Key Laboratory of Green Biomass‐based Fuels and Chemicals Nanjing People's Republic of China
| | - Shiyu Gao
- Jiangsu Co‐Innovation Centre of Efficient Processing and Utilization of Forest Products, Nanjing Forestry University Nanjing People's Republic of China
- College of Materials Science and Engineering, Nanjing Forestry University Nanjing People's Republic of China
- Jiangsu Province Key Laboratory of Green Biomass‐based Fuels and Chemicals Nanjing People's Republic of China
| | - Nan Xu
- Jiangsu Co‐Innovation Centre of Efficient Processing and Utilization of Forest Products, Nanjing Forestry University Nanjing People's Republic of China
- College of Materials Science and Engineering, Nanjing Forestry University Nanjing People's Republic of China
- Jiangsu Province Key Laboratory of Green Biomass‐based Fuels and Chemicals Nanjing People's Republic of China
| | - Li Xu
- Jiangsu Co‐Innovation Centre of Efficient Processing and Utilization of Forest Products, Nanjing Forestry University Nanjing People's Republic of China
- College of Materials Science and Engineering, Nanjing Forestry University Nanjing People's Republic of China
- Jiangsu Province Key Laboratory of Green Biomass‐based Fuels and Chemicals Nanjing People's Republic of China
| | - Sainan Chen
- Jiangsu Provincial Key Laboratory of Environmental Engineering, Jiangsu Academy of Environmental Science Nanjing People's Republic of China
| | - Changtong Mei
- Jiangsu Co‐Innovation Centre of Efficient Processing and Utilization of Forest Products, Nanjing Forestry University Nanjing People's Republic of China
- College of Materials Science and Engineering, Nanjing Forestry University Nanjing People's Republic of China
- Jiangsu Province Key Laboratory of Green Biomass‐based Fuels and Chemicals Nanjing People's Republic of China
| | - Changyan Xu
- Jiangsu Co‐Innovation Centre of Efficient Processing and Utilization of Forest Products, Nanjing Forestry University Nanjing People's Republic of China
- College of Materials Science and Engineering, Nanjing Forestry University Nanjing People's Republic of China
- Jiangsu Province Key Laboratory of Green Biomass‐based Fuels and Chemicals Nanjing People's Republic of China
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28
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A dual-emission fluorescence sensor constructed by encapsulating double carbon dots in zeolite imidazole frameworks for sensing Pb2+. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126218] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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29
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Khan WU, Qin L, Alam A, Zhou P, Peng Y, Wang Y. Water-soluble green-emitting carbon nanodots with enhanced thermal stability for biological applications. NANOSCALE 2021; 13:4301-4307. [PMID: 33595575 DOI: 10.1039/d0nr09131f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
High stability and water solubility of fluorescent nanomaterials are considered key factors to evaluate their feasibility for fundamental applications. Herein, water-soluble and thermally stable, green-emitting carbon nanodots (CNDs) have been synthesized via a facile hydrothermal method with an average size of 1.9 nm. CNDs showed green emission centered at 544 nm with the photo-luminescence quantum yield (PLQY) of up to 10.1% under the excitation of 400 nm. The obtained CNDs demonstrated high resistance towards photo-bleaching and an ionic (KCl) environment. Moreover, the aqueous solution of CNDs exhibited excellent stability under harsh thermal conditions from 10 °C to 80 °C. The as-prepared CNDs showed stable performance at high temperatures, even after keeping them at 80 °C for 30 min. Furthermore, the green emissive CNDs were incubated in T-ca cancer cells for bio-imaging applications. The results indicated that CNDs can served as an effective thermally-stable bio-imaging agent in T-ca cells at the physiological temperature range of 25 °C-45 °C. Green emission and excellent thermal stability make these CNDs promising fluorescent materials for potential applications in the medical field, which requires long-wavelength fluorescence and high-temperature imaging.
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Affiliation(s)
- Waheed Ullah Khan
- National and Local Joint Engineering Laboratory of Optical-Conversion Materials and Technology & School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, P.R. China.
| | - Liying Qin
- School of Stomotology, Lanzhou University, Lanzhou 730000, P.R. China
| | - Abid Alam
- National and Local Joint Engineering Laboratory of Optical-Conversion Materials and Technology & School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, P.R. China.
| | - Ping Zhou
- School of Stomotology, Lanzhou University, Lanzhou 730000, P.R. China
| | - Yong Peng
- Key Laboratory of Magnetism and Magnetic Materials of the Ministry of Education, School of Physical Science and Technology and Electron Microscope Center of Lanzhou University, Lanzhou 730000, P.R. China
| | - Yuhua Wang
- National and Local Joint Engineering Laboratory of Optical-Conversion Materials and Technology & School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, P.R. China.
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30
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Zheng X, Qin K, He L, Ding Y, Luo Q, Zhang C, Cui X, Tan Y, Li L, Wei Y. Novel fluorescent nitrogen-doped carbon dots derived from Panax notoginseng for bioimaging and high selectivity detection of Cr 6. Analyst 2021; 146:911-919. [PMID: 33237046 DOI: 10.1039/d0an01599g] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Carbon dots (CDs) and photoluminescent carbon dots (Pn-CDs) are promising nanomaterials due to their bioimaging applications and have attracted considerable attention because of their excellent stability, good biocompatibility, and low biotoxicity. Here, the Pn-CDs and highly fluorescent nitrogen-doped CDs (Pn N-CDs) derived from Panax notoginseng were successfully synthesized by a simple hydrothermal method. Pn N-CDs exhibit optical properties and stability superior to those of Pn-CDs and can be better used as fluorescent dyes and probes in biological imaging. The obtained Pn N-CDs can be effectively applied to the imaging of bacteria, fungi, plant cells, and protozoa. In addition, Pn N-CDs can perform specific staining on the membranes of all tested cells. The in vivo imaging of mice revealed that Pn N-CDs exhibit nontoxicity and good biocompatibility and biodistribution. Furthermore, Pn N-CDs can be utilized as fluorescent probes for the rapid and highly selective detection of Cr6+. Hence, a simple, cost-effective, scalable, and green synthetic approach based on traditional Chinese medicine-derived CDs can be used to develop biolabeling, membrane targeting, and optical sensing probes.
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Affiliation(s)
- Xiaodan Zheng
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, China.
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31
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Karakoçak B, Laradji A, Primeau T, Berezin MY, Li S, Ravi N. Hyaluronan-Conjugated Carbon Quantum Dots for Bioimaging Use. ACS APPLIED MATERIALS & INTERFACES 2021; 13:277-286. [PMID: 33355448 PMCID: PMC8243741 DOI: 10.1021/acsami.0c20088] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 12/10/2020] [Indexed: 05/28/2023]
Abstract
This work demonstrates the application of hyaluronan-conjugated nitrogen-doped carbon quantum dots (HA-nCQDs) for bioimaging of tumor cells and illustrates their potential use as carriers in targeted drug delivery. Quantum dots are challenging to deliver with specificity, which hinders their application. To facilitate targeted internalization by cancer cells, hyaluronic acid, a natural ligand of CD44 receptors, was covalently grafted on nCQDs. The HA-nCQD conjugate was synthesized by carbodiimide coupling of the amine moieties on nCQDs and the carboxylic acids on HA chains. Conjugated HA-nCQD retained sufficient fluorescence, although with 30% lower quantum efficiency than the original nCQDs. Confocal microscopy showed enhanced internalization of HA-nCQDs, facilitated by CD44 receptors. To demonstrate the specificity of HA-nCQDs toward human tumor cells, patient-derived breast cancer tissue with high-CD44 expression was implanted in adult mice. The tumors were allowed to grow up to 200-250 mm3 prior to the injection of HA-nCQDs. With either local or systemic injection, we achieved a high level of tumor specificity judged by a strong signal-to-noise ratio between the tumor and the surrounding tissue in vivo. Overall, the results show that HA-nCQDs can be used for imaging of CD44-specific tumors in preclinical models of human cancer and potentially used as carriers for targeted drug delivery into CD44-rich cells.
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Affiliation(s)
- Bedia
Begüm Karakoçak
- Department
of Ophthalmology and Visual Sciences, Washington
University in St. Louis, St. Louis, Missouri 63110, United States
- Veterans
Affairs Medical Center, St. Louis, Missouri 63106, United States
| | - Amine Laradji
- Department
of Ophthalmology and Visual Sciences, Washington
University in St. Louis, St. Louis, Missouri 63110, United States
- Veterans
Affairs Medical Center, St. Louis, Missouri 63106, United States
| | - Tina Primeau
- Department
of Medicine, Washington University School
of Medicine, St. Louis, Missouri 63110, United
States
| | - Mikhail Y. Berezin
- Department
of Radiology, Washington University School
of Medicine, St. Louis, Missouri 63110, United
States
| | - Shunqiang Li
- Department
of Medicine, Washington University School
of Medicine, St. Louis, Missouri 63110, United
States
| | - Nathan Ravi
- Department
of Ophthalmology and Visual Sciences, Washington
University in St. Louis, St. Louis, Missouri 63110, United States
- Veterans
Affairs Medical Center, St. Louis, Missouri 63106, United States
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32
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Luo Q, Yuan H, Zhang M, Jiang P, Liu M, Xu D, Guo X, Wu Y. A 3D porous fluorescent hydrogel based on amino-modified carbon dots with excellent sorption and sensing abilities for environmentally hazardous Cr(VI). JOURNAL OF HAZARDOUS MATERIALS 2021; 401:123432. [PMID: 32763714 DOI: 10.1016/j.jhazmat.2020.123432] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 06/21/2020] [Accepted: 07/06/2020] [Indexed: 06/11/2023]
Abstract
To effectively detect and remove environmentally hazardous Cr(VI), a novel 3D porous fluorescent hydrogel was synthesised using amino-modified carbon dots and cellulose nanofibers. The synthesised fluorescent hydrogel was characterized to determine its morphology, crystalline structure, chemical composition and optical property using scanning electron microscopy, X-ray diffraction, Fourier transform infrared spectroscopy, UV-vis absorption spectroscopy and photoluminescence spectroscopy. The sorption properties of the synthesised fluorescent hydrogel were further analyzed. The maximum sorption capacity for Cr(VI) reached 534.4 mg/g, the adsorption isotherm was well fitted using Langmuir model, and the adsorption kinetics were well fitted using a pseudo-second-order model. The sensing ability of the synthesized hydrogel for Cr(VI) was also determined. Furthermore, the mechanism of Cr(VI) sorption and sensing was determined. Accordingly, this novel 3D porous fluorescent hydrogel was identified to be a promising sorbent with advantages of excellent sorption and sensing abilities for environmentally hazardous Cr(VI).
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Affiliation(s)
- Qiuyan Luo
- College of Science, Central South University of Forestry and Technology, Changsha 410004, China
| | - Hanmeng Yuan
- College of Science, Central South University of Forestry and Technology, Changsha 410004, China
| | - Min Zhang
- College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China
| | - Ping Jiang
- College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China
| | - Ming Liu
- College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China
| | - Dong Xu
- College of Food Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China
| | - Xin Guo
- College of Science, Central South University of Forestry and Technology, Changsha 410004, China.
| | - Yiqiang Wu
- College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China
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33
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Recent advances in analytical, bioanalytical and miscellaneous applications of green nanomaterial. Trends Analyt Chem 2020. [DOI: 10.1016/j.trac.2020.116109] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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34
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Magdy G, Abdel Hakiem AF, Belal F, Abdel-Megied AM. Green one-pot synthesis of nitrogen and sulfur co-doped carbon quantum dots as new fluorescent nanosensors for determination of salinomycin and maduramicin in food samples. Food Chem 2020; 343:128539. [PMID: 33183875 DOI: 10.1016/j.foodchem.2020.128539] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 10/14/2020] [Accepted: 10/29/2020] [Indexed: 12/20/2022]
Abstract
A simple green hydrothermal method was proposed for synthesis of highly fluorescent nitrogen and sulfur co-doped carbon quantum dots (N,S-CQDs) using citric acid and thiosemicarbazide. The produced N,S-CQDs were subjected to extensive spectroscopic characterization and applied as fluorescent nanosensors for the sensitive spectrofluorimetric determination of salinomycin and maduramicin directly without prior derivatization for the first time. The obtained N,S-CQDs showed strong emission band at 430 nm after excitation at 360 nm. The native fluorescence of N,S-CQDs was found to be quenched by the addition of increased concentrations of each drug. Method validation revealed a wide linear relationship between the fluorescence quenching of N,S-CQDs and the concentration of each drug in the range of 10.0-300.0 μM with detection limits of 2.07 μM and 1.34 μM for salinomycin and maduramicin, respectively. The developed method has been efficiently applied for estimation of analytes in six raw matrices with high recoveries.
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Affiliation(s)
- Galal Magdy
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Kafrelsheikh University, Kafrelsheikh, P.O. Box 33511, Egypt.
| | - Ahmed F Abdel Hakiem
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Kafrelsheikh University, Kafrelsheikh, P.O. Box 33511, Egypt
| | - Fathalla Belal
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Mansoura University, Mansoura, P.O. Box 35516, Egypt.
| | - Ahmed M Abdel-Megied
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Kafrelsheikh University, Kafrelsheikh, P.O. Box 33511, Egypt; School of Pharmacy, Pacific University Oregon, Hillsboro, OR 97123, USA.
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35
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Mahmoud ME, Fekry NA, Abdelfattah AM. Removal of uranium (VI) from water by the action of microwave-rapid green synthesized carbon quantum dots from starch-water system and supported onto polymeric matrix. JOURNAL OF HAZARDOUS MATERIALS 2020; 397:122770. [PMID: 32388094 DOI: 10.1016/j.jhazmat.2020.122770] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 04/15/2020] [Accepted: 04/16/2020] [Indexed: 06/11/2023]
Abstract
Carbon quantum dots (CQDs) are a new class of carbon nanoparticles with superior advantages as small particle size, excellent biocompatibility and low toxicity which advance their recent applications in biotechnology, bioimaging and biosensing. The use of free CQDs in water treatment is greatly rendered by their high solubility in water. Therefore, this work is aimed to rapidly synthesize CQDs in only 10 min via microwave irradiation pyrolysis of starch-water system. The maximum fluorescence emission of CQDs was detected at 526 nm throughout the excitation wavelength (390 nm). The CQDs have been targeted to occupy the surface and pores of a polymeric material based on poly(anthranilic acid-formaldehyde-phthalic acid) (PAFP) to produce a novel CQDs@PAFP nanobiosorbent. The surface area of CQDs@PAFP was detected (28.79 m2 g-1 BET) and the nanoparticle size was confirmed (TEM). The highest removals of U(VI) by CQDs@PAFP nanobiosorbent were 95.5-98.0 % for 30-90 mg L-1. The sorption mechanism was designated to the pseudo-second-order model and closely tailored with Freundlich model. CQDs@PAFP was emerged as an excellent nanobiosorbent for U(VI) removal from wastewater (97.3 %) and sea water (96.0 %). CQDs@PAFP confirmed its excellent reusablity for efficient multi- recovery of U(VI) from different water samples.
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Affiliation(s)
- Mohamed E Mahmoud
- Faculty of Sciences, Chemistry Department, Alexandria University, Moharem Bey, Alexandria, Egypt
| | - Nesma A Fekry
- Faculty of Sciences, Chemistry Department, Alexandria University, Moharem Bey, Alexandria, Egypt.
| | - Amir M Abdelfattah
- Faculty of Sciences, Chemistry Department, Alexandria University, Moharem Bey, Alexandria, Egypt
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36
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Geng X, Congdon TR, Anees P, Greschner AA, Vetrone F, Gauthier MA. Surface vs. core N/S/Se-heteroatom doping of carbon nanodots produces divergent yet consistent optical responses to reactive oxygen species. NANOSCALE ADVANCES 2020; 2:4024-4033. [PMID: 36132774 PMCID: PMC9417739 DOI: 10.1039/d0na00439a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Accepted: 07/15/2020] [Indexed: 06/13/2023]
Abstract
Carbon nanodots (CNDs) have attracted substantial scientific curiosity because of their intriguing stimuli-responsive optical properties. However, one obstacle to the more widespread use of CNDs as transducers for e.g., biodetection systems is incomplete knowledge regarding the underlying chemical changes responsible for this responsiveness, and how these chemical features can be engineered via the precursors chosen for CND synthesis. This study demonstrates that the precursor's functional groups play a key role in directing N/S/Se heteroatom dopants either towards the surface of the CNDs, towards the aromatic core, or towards small organic fluorophores in the core. Divergent optical properties, which were consistent amongst groups of CNDs prepared with similar precursors, were obtained including either a decrease or increase of fluorescence intensity in the presence of hydrogen peroxide. Moreover, CNDs were identified with orthogonal responsiveness to radical (hydroxyl radicals, ˙OH; down to 2.5 μM) vs. non-radical oxidants (H2O2; down to 50 μM), which suggests that control of the chemistry of CNDs via the choice of precursor could yield probes that are specific to certain sub-species of reactive oxygen species or entirely different molecules altogether, based on the way they chemically-modify the surface (respond faster) and core functional groups (respond slower) associated with chromophores/fluorophores of which the CNDs are composed.
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Affiliation(s)
- Xu Geng
- Institut National de la Recherche Scientifique (INRS), EMT Research Center 1650 Boul. Lionel-Boulet Varennes J3X 1S2 Canada
- School of Basic Medical Science, Henan University Kaifeng 475004 P. R. China
| | - Thomas R Congdon
- Institut National de la Recherche Scientifique (INRS), EMT Research Center 1650 Boul. Lionel-Boulet Varennes J3X 1S2 Canada
| | - Palapuravan Anees
- Institut National de la Recherche Scientifique (INRS), EMT Research Center 1650 Boul. Lionel-Boulet Varennes J3X 1S2 Canada
| | - Andrea A Greschner
- Institut National de la Recherche Scientifique (INRS), EMT Research Center 1650 Boul. Lionel-Boulet Varennes J3X 1S2 Canada
| | - Fiorenzo Vetrone
- Institut National de la Recherche Scientifique (INRS), EMT Research Center 1650 Boul. Lionel-Boulet Varennes J3X 1S2 Canada
| | - Marc A Gauthier
- Institut National de la Recherche Scientifique (INRS), EMT Research Center 1650 Boul. Lionel-Boulet Varennes J3X 1S2 Canada
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37
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A novel water pollution monitoring and treatment agent: Ag doped carbon nanoparticles for sensing dichromate, morphological analysis of Cr and sterilization. Microchem J 2020. [DOI: 10.1016/j.microc.2020.104855] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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38
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Zhang J, Zhao J, Qu W, Li X, Wang Z. One-step, low-cost, mussel-inspired green method to prepare superhydrophobic nanostructured surfaces having durability, efficiency, and wide applicability. J Colloid Interface Sci 2020; 580:211-222. [PMID: 32683118 DOI: 10.1016/j.jcis.2020.07.027] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 07/04/2020] [Accepted: 07/06/2020] [Indexed: 10/23/2022]
Abstract
Various oils discharged from daily life and industrial production, as well as frequent oil spillages, have led to severe water pollution and ecological problems. Mussel-inspired polydopamine has been widely applied for fabrication of superhydrophobic materials for oil/water separation. However, the need of additional nanoparticles via tedious steps to construct nanostructures, and the high cost of dopamine itself limit its practical applications. Moreover, the application modes of superhydrophobic materials for oil/water separation are monotonous, which will limit the applied range of the superhydrophobic materials. For example, superhydrophobic sponge was usually used for adsorbing oil droplets or oil spills from water, while superhydrophobic fabric or mesh was usually used for separating bulk layered oil/water mixture. Therefore, developing simple and low-cost mussel-inspired surface modification strategy toward superhydrophobic materials, as well as diverse application modes for oil/water separation, is still highly desired. In this study, superhydrophobic sponge and fabric with nanostructures, which exhibits excellent performance for diverse oil/water separation, have been fabricated through a novel one-step and cost-effective mussel-inspired approach. The resultant superhydrophobic sponge exhibits outstanding oil absorption capability (weight gains up to 8860%), while the superhydrophobic fabric can effectively separate oil/water mixture. Moreover, diverse modes for oil/water separation have been developed for the first time. For example, water-in-oil emulsion can be highly-efficient separated by a compressed superhydrophobic sponge (~1800L m-2h-1 bar-1 for water-in-oil emulsion, and above 99% rejection rate for water droplets), while crude oil spills can be efficiently collected by a superhydrophobic boat (above 98%).
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Affiliation(s)
- Jin Zhang
- Institute of Carbon Materials Science, Shanxi Datong University, Datong, Shanxi Province 037009, PR China
| | - Jianguo Zhao
- Institute of Carbon Materials Science, Shanxi Datong University, Datong, Shanxi Province 037009, PR China
| | - Wenshan Qu
- Institute of Carbon Materials Science, Shanxi Datong University, Datong, Shanxi Province 037009, PR China
| | - Xinyu Li
- Institute of Carbon Materials Science, Shanxi Datong University, Datong, Shanxi Province 037009, PR China.
| | - Zhenxing Wang
- College of Chemistry, Nanchang University, Nanchang 330031, PR China.
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39
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Chung YJ, Kim J, Park CB. Photonic Carbon Dots as an Emerging Nanoagent for Biomedical and Healthcare Applications. ACS NANO 2020; 14:6470-6497. [PMID: 32441509 DOI: 10.1021/acsnano.0c02114] [Citation(s) in RCA: 111] [Impact Index Per Article: 27.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
As a class of carbon-based nanomaterials, carbon dots (CDs) have attracted enormous attention because of their tunable optical and physicochemical properties, such as absorptivity and photoluminescence from ultraviolet to near-infrared, high photostability, biocompatibility, and aqueous dispersity. These characteristics make CDs a promising alternative photonic nanoagent to conventional fluorophores in disease diagnosis, treatment, and healthcare managements. This review describes the fundamental photophysical properties of CDs and highlights their recent applications to bioimaging, photomedicine (e.g., photodynamic/photothermal therapies), biosensors, and healthcare devices. We discuss current challenges and future prospects of photonic CDs to give an insight into developing vibrant fields of CD-based biomedicine and healthcare.
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Affiliation(s)
- You Jung Chung
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 335 Science Road, Daejeon 34141, Republic of Korea
| | - Jinhyun Kim
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 335 Science Road, Daejeon 34141, Republic of Korea
| | - Chan Beum Park
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 335 Science Road, Daejeon 34141, Republic of Korea
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40
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Le TH, Lee HJ, Kim JH, Park SJ. Detection of Ferric Ions and Catecholamine Neurotransmitters via Highly Fluorescent Heteroatom Co-Doped Carbon Dots. SENSORS (BASEL, SWITZERLAND) 2020; 20:E3470. [PMID: 32575578 PMCID: PMC7349486 DOI: 10.3390/s20123470] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 06/03/2020] [Accepted: 06/16/2020] [Indexed: 12/23/2022]
Abstract
Carbon dots (CDs) demonstrate very poor fluorescence quantum yield (QY). In this study, with the help of a hydrothermal method, we combined CDs with nitrogen and phosphorus elements belonging to the VA group (in the periodic table) to form heteroatom co-doped CDs, i.e., nitrogen and phosphorus co-doped carbon dots (NPCDs). These displayed a significant improvement in the QY (up to 84%), which was as much as four times than that of CDs synthesized by the same method. The as-prepared NPCDs could be used as an "off-on" fluorescence detector for the rapid and effective sensing of ferric ions (Fe3+) and catecholamine neurotransmitters (CNs) such as dopamine (DA), adrenaline (AD), and noradrenaline (NAD). The fluorescence of NPCDs was "turned off" and the emission wavelength was slightly red-shifted upon increasing the Fe3+ concentration. However, when CNs were incorporated, the fluorescence of NPCDs was recovered in a short response time; this indicated that CN concentration could be monitored, relying on enhancing the fluorescence signal of NPCDs. As a result, NPCDs are considered as a potential fluorescent bi-sensor for Fe3+ and CN detection. Particularly, in this research, we selected DA as the representative neurotransmitter of the CN group along with Fe3+ to study the sensing system based on NPCDs. The results exhibited good linear ranges with a limit of detection (LOD) of 0.2 and 0.1 µM for Fe3+ and DA, respectively.
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Affiliation(s)
| | | | | | - Sang Joon Park
- Department of Chemical and Biological Engineering, Gachon University, Seongnam 13120, Korea; (T.H.L.); (H.J.L.); (J.H.K.)
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41
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Liang CY, Pan J, Bai AM, Hu YJ. Insights into the interaction of human serum albumin and carbon dots: Hydrothermal synthesis and biophysical study. Int J Biol Macromol 2020; 149:1118-1129. [DOI: 10.1016/j.ijbiomac.2020.01.238] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 01/20/2020] [Accepted: 01/23/2020] [Indexed: 11/15/2022]
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Meng Y, Jiao Y, Zhang Y, Li Y, Gao Y, Lu W, Liu Y, Shuang S, Dong C. Multi-sensing function integrated nitrogen-doped fluorescent carbon dots as the platform toward multi-mode detection and bioimaging. Talanta 2020; 210:120653. [DOI: 10.1016/j.talanta.2019.120653] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Revised: 12/11/2019] [Accepted: 12/19/2019] [Indexed: 02/02/2023]
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43
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Zhou N, Shi Y, Sun C, Zhang X, Zhao W. Carbon quantum dot-AgOH colloid fluorescent probe for selective detection of biothiols based on the inner filter effect. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 228:117847. [PMID: 31818643 DOI: 10.1016/j.saa.2019.117847] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Revised: 11/21/2019] [Accepted: 11/23/2019] [Indexed: 06/10/2023]
Abstract
Here, we present a selective and sensitive fluorescent probe for the detection and distinction of biothiols, such as glutathione (GSH) and cysteine (Cys). The adsorbance of Cys onto the surface of AgOH colloid could result in enhanced absorbance from 250 to 400 nm in the UV-vis absorption spectrum, while the addition of GSH could dissolve the AgOH colloid resulting in no change in the UV-vis absorption spectrum. Utilizing these different phenomena, two fluorescent probes were established based on the inner filter effect (IFE). The first probe, the "CDs-AgOH colloid" fluorescent probe, was used to quantitatively analyze Cys over a linear concentration range from 33 to 317 μM and a detection limit of 7.2 μM. The second probe, the "CDs-AgOH colloid-Cys" fluorescent probe, was used to quantitatively analyze GSH, with a detection limit down to 3.6 μM, and a linear range of detection of approximately 16.7 to 100 μM. The fluorescent probes were successfully applied for the detection of GSH in a fetal bovine serum (FBS) sample. Based on these results, IFE is considered to be an effective way to distinguish GSH and Cys.
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Affiliation(s)
- Nan Zhou
- Department of Chemistry, Northeast Agricultural University, Harbin 150025, China
| | - Yanping Shi
- Department of Chemistry, Northeast Agricultural University, Harbin 150025, China
| | - Chao Sun
- Department of Chemistry, Northeast Agricultural University, Harbin 150025, China
| | - Xingwei Zhang
- Department of Chemistry, Northeast Agricultural University, Harbin 150025, China
| | - Wei Zhao
- Department of Physiology, Hei Longjiang University of Chinese Medicine, Harbin 150040, Hei Longjiang Province, China.
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Development of Carbon Quantum Dot–Labeled Antibody Fluorescence Immunoassays for the Detection of Morphine in Hot Pot Soup Base. FOOD ANAL METHOD 2020. [DOI: 10.1007/s12161-020-01700-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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45
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Wang H, Wu X, Dong W, Lee SL, Yuan Q, Gan W. One-step preparation of single-layered graphene quantum dots for the detection of Fe 3. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 226:117626. [PMID: 31655371 DOI: 10.1016/j.saa.2019.117626] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Revised: 09/04/2019] [Accepted: 10/06/2019] [Indexed: 05/25/2023]
Abstract
Single-layer graphene quantum dots are highly desirable while their facile and controllable preparations remain challenging. Herein, single-layered graphene quantum dots (sl-GQDs) were developed via a facile one-step hydrothermal synthesis, with citric acid and β-cyclodextrin (CD) as starting materials. The sl-GQDs decorated with CD molecules emit green fluorescence with a quantum yield of 5.34%, and exhibit a good response exclusively to ferric ions for their structural oxygenous groups. The linear range of the proposed sensor for ferric ions was found in a wide concentration range of 0-85 μM. The detection limit is about 0.26 μM. The sl-GQDs based sensing platform also demonstrates its feasibility in real water sample analysis with recoveries of 93.8%-101.5%.
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Affiliation(s)
- Haoqiang Wang
- State Key Laboratory of Advanced Welding and Joining, School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, China
| | - Xingxing Wu
- State Key Laboratory of Advanced Welding and Joining, School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, China
| | - Weilong Dong
- College of Optoelectronic Engineering, Shenzhen University, Shenzhen, 518055, China
| | - Shern-Long Lee
- Institute for Advanced Study, Shenzhen University, Shenzhen, 518055, China
| | - Qunhui Yuan
- State Key Laboratory of Advanced Welding and Joining, School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, China.
| | - Wei Gan
- School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, China.
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46
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Ding C, Deng Z, Chen J, Jin Y. One-step microwave synthesis of N,S co-doped carbon dots from 1,6-hexanediamine dihydrochloride for cell imaging and ion detection. Colloids Surf B Biointerfaces 2020; 189:110838. [PMID: 32028131 DOI: 10.1016/j.colsurfb.2020.110838] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 01/23/2020] [Accepted: 01/29/2020] [Indexed: 02/03/2023]
Abstract
As a new member of the fluorescent carbon nanomaterial family, carbon dots (CDs) not only have outstanding photoluminescence properties and small size characteristics, but also contain favourable low cytotoxicity and biocompatibility, which could be the best choice to detect of ions to replace quantum dots for ions detection. Here, the N,S co-doped carbon dots (N/S-CDs) was synthesized by one-step microwave using 1,6-hexanediamine dihydrochloride and dimethyl sulfoxide as precursors, and their morphology and structure were characterized by TEM, XRD, XPS and FTIR. The optimal emission wavelength of the CDs was 512 nm with green fluorescence, and was red-shifted gradually as the excitation wavelength aggrandized. The synthesized CDs owned a well quantum yield of 24 %. It was further applied for the detection of MnO4- and Cr2O72- with an excellent detection limit of 0.34 μM and 0.23μM, respectively. Cr2O72- did not influence the N/S-CDs PL response of MnO4- in the presence of excessive Pb2+. Moreover, the obtained N/S-CDs demonstrated preeminent biocompatibility and could be resoundingly applied for cellular imaging.
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Affiliation(s)
- Caihe Ding
- School of Materials and Energy, Southwest University, Chongqing 400715, China; Chongqing Key Laboratory for Advanced Materials & Technologies of Clean Energies, Chongqing 400715, China; Chongqing Engineering Research Center for Micro-Nano Biomedical Materials and Devices, Chongqing 400715, China
| | - Zhiqin Deng
- School of Materials and Energy, Southwest University, Chongqing 400715, China; Chongqing Key Laboratory for Advanced Materials & Technologies of Clean Energies, Chongqing 400715, China; Chongqing Engineering Research Center for Micro-Nano Biomedical Materials and Devices, Chongqing 400715, China
| | - Jiucun Chen
- School of Materials and Energy, Southwest University, Chongqing 400715, China; Chongqing Key Laboratory for Advanced Materials & Technologies of Clean Energies, Chongqing 400715, China; Chongqing Engineering Research Center for Micro-Nano Biomedical Materials and Devices, Chongqing 400715, China.
| | - Yanzi Jin
- School of Materials and Energy, Southwest University, Chongqing 400715, China; Chongqing Key Laboratory for Advanced Materials & Technologies of Clean Energies, Chongqing 400715, China; Chongqing Engineering Research Center for Micro-Nano Biomedical Materials and Devices, Chongqing 400715, China.
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47
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One-step synthesis of carbon dots for selective bacterial inactivation and bacterial differentiation. Anal Bioanal Chem 2020; 412:871-880. [PMID: 31901958 DOI: 10.1007/s00216-019-02293-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Revised: 11/13/2019] [Accepted: 11/18/2019] [Indexed: 10/25/2022]
Abstract
Novel carbon dots (CDs) were synthesized by a one-pot hydrothermal approach using ampicillin as a precursor, and the as-prepared CDs exhibited a high quantum yield (23%). The CDs were found to possess abundant surface functional groups, thus providing good permeability to the cell, and the antibacterial activity of CDs was evaluated. S. aureus and L. monocytogenes were selected as model bacteria, and our results showed that the CDs exhibited antibacterial activity against S. aureus and L. monocytogenes under visible light illumination, even at low concentrations. The antibacterial mechanism is believed to be the production of reactive oxygen species (ROS) from CDs under visible light irradiation, which attacked the bacterial cell membranes, resulting in the death of the bacteria. In addition, because of the multicolor fluorescence properties of CDs, staining of S. aureus and L. monocytogenes obtained multicolor fluorescence images at different excitation wavelengths. Based on these results, CDs are a promising candidate material for biological applications. Graphical abstract.
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Wang J, Wu Z, Chen S, Yuan R, Dong L. A novel multifunctional fluorescent sensor based on N/S co-doped carbon dots for detecting Cr (VI) and toluene. Microchem J 2019. [DOI: 10.1016/j.microc.2019.104246] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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49
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Huang S, Yang E, Yao J, Chu X, Liu Y, Xiao Q. Nitrogen, phosphorus and sulfur tri-doped carbon dots are specific and sensitive fluorescent probes for determination of chromium(VI) in water samples and in living cells. Mikrochim Acta 2019; 186:851. [PMID: 31776683 DOI: 10.1007/s00604-019-3941-4] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2019] [Accepted: 10/12/2019] [Indexed: 10/25/2022]
Abstract
A rapid, sensitive, and selective fluorometric assay is described for the determination of chromium(VI) in real waters and living cells. The method is making use of nitrogen, phosphorus, and sulfur tri-doped carbon dots (NPS-CDs) which have absorption/emission maxima at 360/505 nm/nm. Cr(VI) has an absorption maximum at 350 nm and causes an inner filter effect (IFE) on the blue fluorescence of the NPS-CDs. The NPS-CDs were hydrothermally synthesized using p-aminobenzenesulfonic acid and tetrakis(hydroxymethyl)phosphonium chloride as precursors. The NPS-CDs were characterized by transmission electron microscopy, X-ray diffraction, and several spectroscopic methods. They are biocompatible and negligibly cytotoxic when tested with HeLa cells and MCF-7 cells even after 48 h of incubation. The NPS-CDs were used as fluorescent probes for Cr(VI). The detection limit is 0.23 μM (three times standard deviation versus slope), and the linear response covers the 1 to 500 μM chromate concentration range. The NPS-CDs were applied to the determination of Cr(VI) in real waters and living cells (HeLa and MCF-7) and gave satisfying results. Graphical abstractSchematic representation of hydrothermal synthesis of nitrogen, phosphorus, and sulfur tri-doped carbon dots (NPS-CDs) for Cr(VI) detection via inner filter effect (IFE). NPS-CDs were applied to the determination of Cr(VI) in living cells (HeLa and MCF-7) with satisfying results.
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Affiliation(s)
- Shan Huang
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning, 530001, People's Republic of China
| | - Erli Yang
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning, 530001, People's Republic of China
| | - Jiandong Yao
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning, 530001, People's Republic of China
| | - Xu Chu
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning, 530001, People's Republic of China
| | - Yi Liu
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning, 530001, People's Republic of China
| | - Qi Xiao
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning, 530001, People's Republic of China.
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50
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Li S, Ma X, Pang C, Tian H, Xu Z, Yang Y, Lv D, Ge H. Fluorometric aptasensor for cadmium(II) by using an aptamer-imprinted polymer as the recognition element. Mikrochim Acta 2019; 186:823. [PMID: 31754804 DOI: 10.1007/s00604-019-3886-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Accepted: 09/30/2019] [Indexed: 11/29/2022]
Abstract
A fluorometric assay is described for the determination of Cd(II) in environmental and agricultural samples. It is making use of a molecularly imprinted polymer (MIP) and aptamer as dual recognition units, while carbon quantum dots (co-doped with sulphur and nitrogen) and gold nanoparticles (SN-CQD/Au) act as the fluorophores. The aptamer-modified MIP was placed on an SN-CQD/Au-modified indium tin oxide glass electrode. Cd(II) was detected with high selectivity by the recognition sites of the aptamer in the MIP. Fluorescence, with excitation/emission peaks at 370/430 nm, is quenched by Cd(II). Response is linear in the 20 pM to 12 nM concentration range. The detection limit is 1.2 pM. The sensor is selective for Cd(II), and recoveries from spiked waters, soils and vegetables real-world samples range between 82.1 and 113.9%. Graphical abstractA fluorescence sensor composed of a molecularly imprinted polymer and an aptamer as a dual identification system for Cd2+ coupled with and carbon quantum dots (co-doped with sulphur and nitrogen) and gold nanoparticles (SN-CQDs/Au) as fluorescent element that can detect Cd2+ with high selectivity by a dual-recognition mechanism.
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Affiliation(s)
- Shuhuai Li
- Analysis and Test Center of Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China. .,Hainan Provincial Key Laboratory of Quality and Safety for Tropical Fruits and Vegetables, Haikou, 571101, China.
| | - Xionghui Ma
- Analysis and Test Center of Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China.,Hainan Provincial Key Laboratory of Quality and Safety for Tropical Fruits and Vegetables, Haikou, 571101, China
| | - Chaohai Pang
- Analysis and Test Center of Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China.,Hainan Provincial Key Laboratory of Quality and Safety for Tropical Fruits and Vegetables, Haikou, 571101, China
| | - Hai Tian
- Analysis and Test Center of Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China.,Hainan Provincial Key Laboratory of Quality and Safety for Tropical Fruits and Vegetables, Haikou, 571101, China
| | - Zhi Xu
- Analysis and Test Center of Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China. .,College of Food Science and Technology of Huazhong Agricultural University, Wuhan, 430070, China.
| | - Yan Yang
- Tropical Crops Genetic Resources Institute of Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China.
| | - Daizhu Lv
- Analysis and Test Center of Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China.,Hainan Provincial Key Laboratory of Quality and Safety for Tropical Fruits and Vegetables, Haikou, 571101, China
| | - Huilin Ge
- Analysis and Test Center of Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China.,Hainan Provincial Key Laboratory of Quality and Safety for Tropical Fruits and Vegetables, Haikou, 571101, China
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