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Pu Q, Wang C, Yin X, Ye N, Zhang L, Xiang Y. A ratiometric fluorescent dark box and smartphone integrated portable sensing platform based on hydrogen bonding induction for on-site determination of enrofloxacin. Food Chem 2024; 455:139876. [PMID: 38823143 DOI: 10.1016/j.foodchem.2024.139876] [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: 05/15/2024] [Accepted: 05/27/2024] [Indexed: 06/03/2024]
Abstract
Enrofloxacin (ENR) residues in animal-derived food and water threaten human health. Simple, low-cost and on-site detection methods are urgently needed. Blue emitting carbon quantum dots (CQDs) and orange rhodamine B (RhB) were used as recognition and reference signals, respectively, to construct a ratiometric fluorescence sensor. After the addition of ENR, the color of the sensor changed from orange to blue because hydrogen bonding induced a considerable increase in CQDs fluorescence. Based on this mechanism, a simple and low cost on-site portable sensing platform was constructed, which integrated a stable UV light strip and a smartphone with voice-controlled phototaking function and an RGB app. The t-test results of spiked ENR recoveries for diluted milk, honey and drinking water revealed no significant differences between the ratiometric fluorescent sensor and portable sensing platform. Thus, this portable sensing platform provides a novel strategy for on-site quantification of quinolone antibiotics in foodstuffs and environmental water.
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Affiliation(s)
- Qi Pu
- Department of Chemistry, Capital Normal University, Beijing 100048, China
| | - Chumeng Wang
- Department of Chemistry, Capital Normal University, Beijing 100048, China
| | - Xinyue Yin
- Department of Chemistry, Capital Normal University, Beijing 100048, China
| | - Nengsheng Ye
- Department of Chemistry, Capital Normal University, Beijing 100048, China
| | - Lu Zhang
- Department of Chemistry, Capital Normal University, Beijing 100048, China.
| | - Yuhong Xiang
- Department of Chemistry, Capital Normal University, Beijing 100048, China.
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2
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Yazdani S, Mozaffarian M, Pazuki G, Hadidi N, Villate-Beitia I, Zárate J, Puras G, Pedraz JL. Carbon-Based Nanostructures as Emerging Materials for Gene Delivery Applications. Pharmaceutics 2024; 16:288. [PMID: 38399344 PMCID: PMC10891563 DOI: 10.3390/pharmaceutics16020288] [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: 12/13/2023] [Revised: 02/03/2024] [Accepted: 02/14/2024] [Indexed: 02/25/2024] Open
Abstract
Gene therapeutics are promising for treating diseases at the genetic level, with some already validated for clinical use. Recently, nanostructures have emerged for the targeted delivery of genetic material. Nanomaterials, exhibiting advantageous properties such as a high surface-to-volume ratio, biocompatibility, facile functionalization, substantial loading capacity, and tunable physicochemical characteristics, are recognized as non-viral vectors in gene therapy applications. Despite progress, current non-viral vectors exhibit notably low gene delivery efficiency. Progress in nanotechnology is essential to overcome extracellular and intracellular barriers in gene delivery. Specific nanostructures such as carbon nanotubes (CNTs), carbon quantum dots (CQDs), nanodiamonds (NDs), and similar carbon-based structures can accommodate diverse genetic materials such as plasmid DNA (pDNA), messenger RNA (mRNA), small interference RNA (siRNA), micro RNA (miRNA), and antisense oligonucleotides (AONs). To address challenges such as high toxicity and low transfection efficiency, advancements in the features of carbon-based nanostructures (CBNs) are imperative. This overview delves into three types of CBNs employed as vectors in drug/gene delivery systems, encompassing their synthesis methods, properties, and biomedical applications. Ultimately, we present insights into the opportunities and challenges within the captivating realm of gene delivery using CBNs.
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Affiliation(s)
- Sara Yazdani
- Department of Chemical Engineering, Amirkabir University of Technology, Tehran P.O. Box 15875-4413, Iran; (S.Y.); (G.P.)
- NanoBioCel Research Group, University of the Basque Country (UPV/EHU), Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain; (I.V.-B.); (J.Z.); (G.P.)
| | - Mehrdad Mozaffarian
- Department of Chemical Engineering, Amirkabir University of Technology, Tehran P.O. Box 15875-4413, Iran; (S.Y.); (G.P.)
| | - Gholamreza Pazuki
- Department of Chemical Engineering, Amirkabir University of Technology, Tehran P.O. Box 15875-4413, Iran; (S.Y.); (G.P.)
| | - Naghmeh Hadidi
- Department of Clinical Research and EM Microscope, Pasteur Institute of Iran (PII), Tehran P.O. Box 131694-3551, Iran;
| | - Ilia Villate-Beitia
- NanoBioCel Research Group, University of the Basque Country (UPV/EHU), Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain; (I.V.-B.); (J.Z.); (G.P.)
- Networking Research Centre of Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Institute of Health Carlos III, Av Monforte de Lemos 3-5, 28029 Madrid, Spain
- Bioaraba, NanoBioCel Research Group, Calle José Achotegui s/n, 01009 Vitoria-Gasteiz, Spain
| | - Jon Zárate
- NanoBioCel Research Group, University of the Basque Country (UPV/EHU), Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain; (I.V.-B.); (J.Z.); (G.P.)
- Networking Research Centre of Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Institute of Health Carlos III, Av Monforte de Lemos 3-5, 28029 Madrid, Spain
- Bioaraba, NanoBioCel Research Group, Calle José Achotegui s/n, 01009 Vitoria-Gasteiz, Spain
| | - Gustavo Puras
- NanoBioCel Research Group, University of the Basque Country (UPV/EHU), Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain; (I.V.-B.); (J.Z.); (G.P.)
- Networking Research Centre of Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Institute of Health Carlos III, Av Monforte de Lemos 3-5, 28029 Madrid, Spain
- Bioaraba, NanoBioCel Research Group, Calle José Achotegui s/n, 01009 Vitoria-Gasteiz, Spain
| | - Jose Luis Pedraz
- NanoBioCel Research Group, University of the Basque Country (UPV/EHU), Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain; (I.V.-B.); (J.Z.); (G.P.)
- Networking Research Centre of Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Institute of Health Carlos III, Av Monforte de Lemos 3-5, 28029 Madrid, Spain
- Bioaraba, NanoBioCel Research Group, Calle José Achotegui s/n, 01009 Vitoria-Gasteiz, Spain
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3
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Dong CD, Huang CP, Chen CW, Lam SS, Sonne C, Kang CK, Hung CM. Facile heteroatoms modification biochar production from mahogany (Swietenia macrophylla King) pericarps for enhanced the suppression of polycyclic aromatic hydrocarbon pollutants. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 343:123173. [PMID: 38110049 DOI: 10.1016/j.envpol.2023.123173] [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: 08/23/2023] [Revised: 11/15/2023] [Accepted: 12/13/2023] [Indexed: 12/20/2023]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) are critical environmental concerns due to their intrinsic toxic aromatic nature and concomitant circumstances that potentially harm the ecological and human health. In this study, converting mahogany (Swietenia macrophylla King) pericarps to value-added biochar by pyrolysis for evaluating the potential formation/destruction of biochar-bound PAHs was studied for the first time. This study designed and optimized the thermal processing conditions at 300-900 °C in the CO2 or N2 atmosphere, and heteroatoms (N, O, B, NB, and NS) were modified for mahogany pericarps biochar (MPBC) production. The MPBC500 exhibited significantly higher pyrolysis products of PAHs (2780 ± 38 ng g-1) than that of MPBC900 (78 ± 6 ng g-1) under N2 without introducing modified elements. Specifically, the inhibition capacity of MPBC500 for PAHs under CO2 was improved most efficiently by the active nitrogen species of the pyridinic N and pyrrolic N groups. The pyrolysis conditions and heteroatom modification of MPBC altered its physicochemical properties, that is, aromaticity and hydrophobicity, affecting the PAH concentration and composition in the pyrolysis products. This study reveals sustainable approaches to reduce the environmental footprint of biochar by focusing on increases in PAHs pollution in sustainable biochar produced from a low-carbon bioeconomy perspective.
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Affiliation(s)
- Cheng-Di Dong
- Institute of Aquatic Science and Technology, College of Hydrosphere Science, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan; Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan
| | - Chin-Pao Huang
- Department of Civil and Environmental Engineering, University of Delaware, Newark, USA
| | - Chiu-Wen Chen
- Institute of Aquatic Science and Technology, College of Hydrosphere Science, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan
| | - Su Shiung Lam
- Higher Institution Centre of Excellence (HICoE), Institute of Tropical Aquaculture and Fisheries, Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia; Department of Chemical Engineering and Materials Science, Yuan Ze University, Taoyuan, Taiwan
| | - Christian Sonne
- Aarhus University, Department of Ecoscience, Arctic Research Centre (ARC), Frederiksborgvej 399, PO Box 358, DK-4000, Roskilde, Denmark; Sustainability Cluster, School of Engineering, University of Petroleum & Energy Studies, Dehradun, Uttarakhand, 248007, India
| | - Chih-Kuo Kang
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan
| | - Chang-Mao Hung
- Institute of Aquatic Science and Technology, College of Hydrosphere Science, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan; Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan.
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4
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Klongklaw K, Phiromkaew B, Kiatsuksri P, Kankit B, Anantachaisilp S, Wechakorn K. Green one-step synthesis of mushroom-derived carbon dots as fluorescent sensors for Fe 3+ detection. RSC Adv 2023; 13:30869-30875. [PMID: 37869393 PMCID: PMC10588369 DOI: 10.1039/d3ra06300c] [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: 09/15/2023] [Accepted: 10/12/2023] [Indexed: 10/24/2023] Open
Abstract
Blue photoluminescent carbon dots were synthesized from Lentinus polychrous Lèv. via a simple hydrothermal process without additional chemical reagents or functionalization. The carbon dots (hereafter referred to as LCDs) were quasi-spherical with an average diameter of 6.0 nm. The strong fluorescence emissions of LCDs were utilized as the basis of efficient turn-off probes for Fe3+. The quenching phenomenon could be used to rapidly determine Fe3+ concentrations in the range of 0.0-2.0 mM in aqueous solution, with a limit of detection (LOD) of 16 μM. In the presence of interference, LCDs demonstrated good sensitivity and selectivity towards Fe3+ in both solution-based and paper-based systems. The LCDs also exhibited excellent photostability and an eco-friendly nature, making them an ideal choice for environmental monitoring with significant potential for diagnostic applications.
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Affiliation(s)
- Kodchakorn Klongklaw
- Kamnoetvidya Science Academy 999 Moo 1, Payubnai, Wangchan Rayong 21210 Thailand
| | - Bunyarak Phiromkaew
- Kamnoetvidya Science Academy 999 Moo 1, Payubnai, Wangchan Rayong 21210 Thailand
| | - Praeploy Kiatsuksri
- Kamnoetvidya Science Academy 999 Moo 1, Payubnai, Wangchan Rayong 21210 Thailand
| | - Bantita Kankit
- Department of Chemistry, Faculty of Science and Technology, Rajamangala University of Technology Thanyaburi Pathum Thani 12110 Thailand
| | | | - Kanokorn Wechakorn
- Department of Chemistry, Faculty of Science and Technology, Rajamangala University of Technology Thanyaburi Pathum Thani 12110 Thailand
- Advanced Photochemical and Electrochemical Materials Research Unit, Faculty of Science and Technology, Rajamangala University of Technology Thanyaburi Pathum Thani 12110 Thailand
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5
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Munusamy S, Mandlimath TR, Swetha P, Al-Sehemi AG, Pannipara M, Koppala S, Paramasivam S, Boonyuen S, Pothu R, Boddula R. Nitrogen-doped carbon dots: Recent developments in its fluorescent sensor applications. ENVIRONMENTAL RESEARCH 2023; 231:116046. [PMID: 37150390 DOI: 10.1016/j.envres.2023.116046] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 04/16/2023] [Accepted: 05/02/2023] [Indexed: 05/09/2023]
Abstract
Doped carbon dots have attracted great attention from researchers across disciplines because of their unique characteristics, such as their low toxicity, physiochemical stability, photostability, and outstanding biocompatibility. Nitrogen is one of the most commonly used elements for doping because of its sizeable atomic radius, strong electronegativity, abundance, and availability of electrons. This distinguishes them from other atoms and allows them to perform distinctive roles in various applications. Here, we have reviewed the most current breakthroughs in nitrogen-doped CDs (N-CDs) for fluorescent sensor applications in the last five years. The first section of the article addresses several synthetic and sustainable ways of making N-CDs. Next, we briefly reviewed the fluorescent features of N-CDs and their sensing mechanism. Furthermore, we have thoroughly reviewed their fluorescent sensor applications as sensors for cations, anions, small molecules, enzymes, antibiotics, pathogens, explosives, and pesticides. Finally, we have discussed the N-CDs' potential future as primary research and how that may be used. We hope that this study will contribute to a better understanding of the principles of N-CDs and the sensory applications that they can serve.
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Affiliation(s)
- Sathishkumar Munusamy
- Department of Chemistry, Faculty of Science, Chulalongkorn University, Phayathai Road, Angkok, 10330, Pathumwan, Thailand.
| | - Triveni Rajashekhar Mandlimath
- Department of Chemistry, School of Advanced Sciences, VIT-AP University, G-30, Inavolu, Besides AP Secretariat Amaravati, Andhra Pradesh, India
| | - Puchakayala Swetha
- Department of Chemistry, Oakland University, Rochester, MI, 48309, United States
| | | | | | - Sivasankar Koppala
- Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai, 602105, Tamil Nadu, India
| | - Shanmugam Paramasivam
- Department of Chemistry, Faculty of Science and Technology, Thammasat University, Bangkok, 12120, Pathumthani, Thailand
| | - Supakorn Boonyuen
- Department of Chemistry, Faculty of Science and Technology, Thammasat University, Bangkok, 12120, Pathumthani, Thailand
| | - Ramyakrishna Pothu
- College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, PR China
| | - Rajender Boddula
- Center for Advanced Materials (CAM), Qatar University Doha, 2713, Qatar.
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6
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Kumar VB, Gedanken A, Porat Z. Sonochemistry of molten metals. NANOSCALE 2023; 15:7625-7639. [PMID: 37060125 DOI: 10.1039/d3nr00143a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Ultrasonic irradiation of molten metals in liquid media causes dispersion of the metals into suspensions of micro- and nanoparticles that can be separated. This is applicable mainly to low-mp elemental metals or alloys, but higher mp elemental metals or alloys were also reported. Among metals, mercury and gallium exhibit especially-low melting points and are thus considered as liquid metals (LMs). Sonication of mercury in aqueous solutions of certain metal ions can cause simultaneous reduction of the ions and reactions between the metals. Gallium can be melted and sonicated in warm water, as well as in aqueous solutions of various solutes such as metal ions and organic compounds, which opened a wide window of interactions between the gallium particles and the solutes. Sonication of molten metals in organic liquids, such as polyethylene glycol (PEG) 400, forms carbon dots (C-dots) doped with nanoparticles of these metals. This review article summarizes the various interactions and reactions that occur upon sonication of metals in liquid media.
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Affiliation(s)
- Vijay Bhooshan Kumar
- Bar-Ilan Institute for Nanotechnology and Advanced Materials, Department of Chemistry, Bar-Ilan University, Ramat-Gan 5290002, Israel
- Faculty of life Sciences, Tel Aviv University, Tel Aviv-Yafo, 6997801, Tel Aviv, Israel
| | - Aharon Gedanken
- Faculty of life Sciences, Tel Aviv University, Tel Aviv-Yafo, 6997801, Tel Aviv, Israel
| | - Ze'ev Porat
- Department of Chemistry, Nuclear Research Center-Negev, Beer-Sheva 84190, Israel
- Department of Civil and Environmental Engineering, Ben-Gurion University of the Negev, Beer Sheva 8410501, Israel.
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7
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Rajendran S, UshaVipinachandran V, Badagoppam Haroon KH, Ashokan I, Bhunia SK. A comprehensive review on multi-colored emissive carbon dots as fluorescent probes for the detection of pharmaceutical drugs in water. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2022; 14:4263-4291. [PMID: 36278849 DOI: 10.1039/d2ay01288j] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Exposure to constituent hazardous chemicals in medical products has become a threat to environmental health across the globe. Excessive medication and the mishandling of pharmaceutical drugs can lead to the increased presence of chemicals in the aquatic environment, causing water pollution. Only a few nanomaterials exist for the detection of these chemicals and they are limited in use due to their adverse toxicity, instability, cost, and low aqueous solubility. In contrast, carbon dots (C-dots), a member of the family of carbon-based nanomaterials, have various beneficial properties including excellent biocompatibility, strong photoluminescence, low photobleaching, tunable fluorescence, and easy surface modification. Herein, we summarize recent advancements in various synthetic strategies for high-quality tunable fluorescent C-dots. The root of fluorescence has been briefly explained via the quantum confinement effect, surface defects, and molecular fluorescence. The surface functional moieties of C-dots have been investigated in depth to recognize the various types of pharmaceutical drugs that are used for the treatment of patients. The modulation of C-dot fluorescence in the course of their interactions with these drugs has been carefully explained. Different types of interaction mechanisms behind the C-dot fluorescence alteration have been discussed. Finally, the challenges and future perspectives of C-dots have been proposed for the vibrant field development of C-dot-based drug sensors.
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Affiliation(s)
- Sathish Rajendran
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore, 632014, India.
| | - Varsha UshaVipinachandran
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore, 632014, India.
| | | | - Indhumathi Ashokan
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore, 632014, India.
| | - Susanta Kumar Bhunia
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore, 632014, India.
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Manikandan V, Lee NY. Green synthesis of carbon quantum dots and their environmental applications. ENVIRONMENTAL RESEARCH 2022; 212:113283. [PMID: 35461844 DOI: 10.1016/j.envres.2022.113283] [Citation(s) in RCA: 39] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Revised: 04/07/2022] [Accepted: 04/08/2022] [Indexed: 05/25/2023]
Abstract
Green synthesis of scalable, high-quality, fluorescent carbon quantum dots (CQDs) from natural biomass remains attractive due to their outstanding environmental application. CQDs are an emerging class of zero-dimensional carbon nanomaterials (<10 nm) that have recently attracted much attention due to their strong optical properties, biocompatibility, nontoxicity, uniform particle size, high photostability, low-cost synthesis, and highly tunable photoluminescence. The unique properties of CQDs possess a broad range of prospective applications in a number of fields such as metal ions detection, photocatalysis, sensing, medical diagnosis, bioimaging, and drug delivery. CQD nanostructures are synthesized using various techniques such as hydrothermal method, laser ablation, microwave irradiation, electrochemical oxidation, reflux method, and ultrasonication. However, this type of fabrication approach requires several chemical reactions including oxidation, carbonization, and pyrolysis. Green synthesis of CQDs has several advantages such as the use of low-cost and non-toxic raw materials, renewable resources, simple operations, and being environment-friendly. This review article will discuss the physicochemical properties of CQDs techniques used in the production of CQDs, and the stability of CQDs along with their applications in wastewater treatment and biomedical fields.
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Affiliation(s)
- Velu Manikandan
- Department of BioNano Technology, Gachon University, 1342 Seongnam-daero, Sujeong-gu, Seongnam-si, Gyeonggi-do, 13120, South Korea
| | - Nae Yoon Lee
- Department of BioNano Technology, Gachon University, 1342 Seongnam-daero, Sujeong-gu, Seongnam-si, Gyeonggi-do, 13120, South Korea
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9
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Li FY, Chung YC. Fabrication of “electroactive cells” using bio-inspired polydopamine-derived carbon nanoparticles for manipulation of cells with electrical stimulation. Front Bioeng Biotechnol 2022; 10:949308. [PMID: 35957635 PMCID: PMC9358047 DOI: 10.3389/fbioe.2022.949308] [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: 05/20/2022] [Accepted: 06/27/2022] [Indexed: 11/13/2022] Open
Abstract
In this study, we report some bio-inspired carbon nanoparticles (CNPs) that exhibit high fluorescence quantum yields, good conductivity, excellent dispersion in aqueous solution, high cell-uptake efficiency, and no cytotoxicity as well. We were inspired by mussels’ adhesive components to synthesize polydopamine nanoparticles and then use a carbonization process to prepare fluorescent CNPs. Using some surfactants, we could control the sizes of CNPs and increase their dispersion in water. Fluorescence spectroscopy confirmed the excitation of CNPs at 360 nm and emission of blue light with a 400–450 nm wavelength. High quantum yields of greater than 20% were also measured. Transmission electron microscopy proved that the addition of surfactants could shrink particles to several nanometers in size. The fluorescent and conductive CNPs were applied to stain L929 fibroblast cells in vitro, finding no harmful effects on cells. Due to the polydopamine-derived CNPs’ good electrical, fluorescent, and biocompatible response, we designed a platform to manipulate the cells after endocytosis of conductive CNPs to observe the effects of electrical stimulation on cell attachment, cell growth, and cell death. The nanoparticles endocytosed by cells seemed more easily attracted to the electric field, leading to enhanced cell attachment and growth. Therefore, CNP uptake can increase the attachment of cells onto a conductive plate electrode in a short time (within 10 min at 4°C). When the source of the electric field was changed to rod electrodes in the medium, cells that had been pre-adsorbed onto a non-conductive plate were desorbed from the plate and destroyed. Therefore, addition of CNPs during cell incubation can allow control of cell growth and death via manipulation of electric fields.
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Affiliation(s)
- Fang-Yi Li
- Department of Chemical and Materials Engineering, National University of Kaohsiung, Kaohsiung, Taiwan
| | - Yi-Chang Chung
- Department of Chemical and Materials Engineering, National University of Kaohsiung, Kaohsiung, Taiwan
- Research Center of Biomimetics and Medicare Technology, National University of Kaohsiung, Kaohsiung, Taiwan
- *Correspondence: Yi-Chang Chung,
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10
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Yao Q, Liang T, Wu H, Xi X, Fan J. Cooccurrence of pH-sensitive shifting blue and immobile green triple surface-state fluorescence in ultrasmall super body-centered cubic carbon quantum dots. NANOTECHNOLOGY 2022; 33:385704. [PMID: 35705025 DOI: 10.1088/1361-6528/ac78f2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Accepted: 06/15/2022] [Indexed: 06/15/2023]
Abstract
Carbon quantum dots are widely used in various fields owing to excellent optical properties and outstanding biocompatibility. We synthesize rare super body-centered cubic (C8) structured carbon quantum dots by using cheap source materials and simple preparation method. They exhibit one shifting blue emission band and two close immobile green bands. They have large Stokes shifts ranging from 0.68 to 1.01 eV and large quantum yields as high as 60%. The three types of emissions are competitive and their intensities vary sensitively and differently with pH. Moreover, their emission intensity versus excitation power curves followI(P)∝Pkwithkvalues significantly smaller than unity. The blue emission follows the stretched exponential decay law with an intermediate lifetime of ∼3.9 ns and a lifetime-dispersion factor of ∼0.85 whereas the two green emissions exhibit faster and slower decays with respective lifetimes of around 2.0 and 13.0 ns. The results reveal that the blue emission originates from an ensemble of emission sites exhibiting quantum confinement-like effect and two green emissions stem from pH-sensitive surface functional groups-associated fluorophores.
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Affiliation(s)
- Qianqin Yao
- School of Physics, Southeast University, Nanjing 211189, People's Republic of China
| | - Tianyuan Liang
- School of Physics, Southeast University, Nanjing 211189, People's Republic of China
| | - Huaxin Wu
- School of Physics, Southeast University, Nanjing 211189, People's Republic of China
| | - Xiaonan Xi
- School of Physics, Southeast University, Nanjing 211189, People's Republic of China
| | - Jiyang Fan
- School of Physics, Southeast University, Nanjing 211189, People's Republic of China
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11
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Jung H, Sapner VS, Adhikari A, Sathe BR, Patel R. Recent Progress on Carbon Quantum Dots Based Photocatalysis. Front Chem 2022; 10:881495. [PMID: 35548671 PMCID: PMC9081694 DOI: 10.3389/fchem.2022.881495] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 03/07/2022] [Indexed: 12/03/2022] Open
Abstract
As a novel carbon allotrope, carbon quantum dots (CQDs) have been investigated in various fields, including photocatalysis, bioimaging, optoelectronics, energy and photovoltaic devices, biosensing, and drug delivery owing to their unique optical and electronic properties. In particular, CQDs' excellent sunlight harvesting ability, tunable photoluminescence (PL), up-conversion photoluminescence (UCPL), and efficient photo-excited electron transfer have enabled their applications in photocatalysis. This work focuses on the recent progress on CQDs-related materials' synthesis, properties, and applications in photocatalysis.
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Affiliation(s)
- Hwapyung Jung
- Nano Science and Engineering, Integrated Science and Engineering Division (ISED), Underwood International College, Yonsei University, Incheon, South Korea
| | - Vijay S. Sapner
- Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University Aurangabad, Seoul, South Korea
| | | | - Bhaskar R. Sathe
- Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University Aurangabad, Seoul, South Korea,*Correspondence: Bhaskar R. Sathe, ; Rajkumar Patel,
| | - Rajkumar Patel
- Energy and Environmental Science and Engineering (EESE), Integrated Science and Engineering Division (ISED), Underwood International College, Yonsei University, Incheon, South Korea,*Correspondence: Bhaskar R. Sathe, ; Rajkumar Patel,
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12
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Xu J, Cui K, Gong T, Zhang J, Zhai Z, Hou L, Zaman FU, Yuan C. Ultrasonic-Assisted Synthesis of N-Doped, Multicolor Carbon Dots toward Fluorescent Inks, Fluorescence Sensors, and Logic Gate Operations. NANOMATERIALS 2022; 12:nano12030312. [PMID: 35159657 PMCID: PMC8839126 DOI: 10.3390/nano12030312] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 01/07/2022] [Accepted: 01/15/2022] [Indexed: 02/01/2023]
Abstract
Over past decades, the multicolor carbon dots (M-CDs) have attracted enormous attentions due to their tunable photoluminescence and versatile applications. Herein, the nitrogen-doped (N-doped) M-CDs including green, chartreuse, and pink emissive CDs are successfully synthesized by ultrasonic treatment of kiwifruit juice with different additive reagents such as ethanol, ethylenediamine, and acetone. Owing to their strong fluorescence upon irradiation with 365 nm UV light, the highly water-soluble M-CDs present great potential in the anticounterfeit field as fluorescent inks. Particularly, the resulting green emission CDs (G-CDs) with excellent fluorescence and stability are applied as a label-free probe model for “on–off” detection of Fe3+. The fluorescence of G-CDs is significantly quenched by Fe3+ through static quenching. The nanoprobe demonstrates good selectivity and sensitivity toward Fe3+ with a detection limit of ~0.11 μM. Besides, the quenched fluorescence of G-CDs by Fe3+ can be recovered by the addition of PO43− or ascorbic acid (AA) into the CDs/Fe3+ system to realize the “off–on” fluorescent process. Furthermore, NOT and IMPLICATION logic gates are constructed based on the selection of Fe3+ and PO43− or AA as the inputs, which makes the G-CD-based sensors utilized as various logic gates at molecular level. Therefore, the N-doped M-CDs hold promising prospects as competitive candidates in monitoring the trace species, applications in food chemistry, anticounterfeit uses, and beyond.
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