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Majdoub M, Sengottuvelu D, Nouranian S, Al-Ostaz A. Graphitic Carbon Nitride Quantum Dots (g-C 3N 4 QDs): From Chemistry to Applications. CHEMSUSCHEM 2024; 17:e202301462. [PMID: 38433108 DOI: 10.1002/cssc.202301462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 02/23/2024] [Accepted: 02/26/2024] [Indexed: 03/05/2024]
Abstract
Since their emergence in 2014, graphitic carbon nitride quantum dots (g-C3N4 QDs) have attracted much interest from the scientific community due to their distinctive physicochemical features, including structural, morphological, electrochemical, and optoelectronic properties. Owing to their desirable characteristics, such as non-zero band gap, ability to be chemically functionalized or doped, possessing tunable properties, outstanding dispersibility in different media, and biocompatibility, g-C3N4 QDs have shown promise for photocatalysis, energy devices, sensing, bioimaging, solar cells, optoelectronics, among other applications. As these fields are rapidly evolving, it is very strenuous to pinpoint the emerging challenges of the g-C3N4 QDs development and application during the last decade, mainly due to the lack of critical reviews of the innovations in the g-C3N4 QDs synthesis pathways and domains of application. Herein, an extensive survey is conducted on the g-C3N4 QDs synthesis, characterization, and applications. Scenarios for the future development of g-C3N4 QDs and their potential applications are highlighted and discussed in detail. The provided critical section suggests a myriad of opportunities for g-C3N4 QDs, especially for their synthesis and functionalization, where a combination of eco-friendly/single step synthesis and chemical modification may be used to prepare g-C3N4 QDs with, for example, enhanced photoluminescence and production yields.
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Affiliation(s)
- Mohammed Majdoub
- Center for Graphene Research and Innovation, University of Mississippi, University, MS 38677, United States
| | - Dineshkumar Sengottuvelu
- Center for Graphene Research and Innovation, University of Mississippi, University, MS 38677, United States
| | - Sasan Nouranian
- Center for Graphene Research and Innovation, University of Mississippi, University, MS 38677, United States
- Department of Chemical Engineering, University of Mississippi, University, MS 38677, United States
| | - Ahmed Al-Ostaz
- Center for Graphene Research and Innovation, University of Mississippi, University, MS 38677, United States
- Department of Civil Engineering, University of Mississippi, University, MS 38677, United States
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Jagadhane KS, Birajdar NB, Kolekar GB, Anbhule PV. A Reversible Mechanochromic AIEgen Based on Triphenylamine for the Selective Detection of Vitamin B2 (Riboflavin) in Aqueous Media and Histotoxicity. Chem Res Toxicol 2024; 37:455-464. [PMID: 38452272 DOI: 10.1021/acs.chemrestox.3c00290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2024]
Abstract
(E)-Ethyl 2-cyano-3-(4'-(diphenyl amino)-[1,1'-biphenyl]-4-yl) acrylate (RSJ) is a novel luminogen based on triphenylamine. It has been fully synthesized and characterized, exhibiting an incredible photophysical phenomenon known as aggregation-induced emission (AIE). This work describes a fluorescent sensor that detects vitamin B2 in mixed aqueous media with high selectivity and a low limit of detection as well as a mechanism for reversible mechanochromic luminescence. Moreover, the molecule was validated for its nontoxicity in water using a histotoxicological study. Fish subjected to two different concentrations of the "novel luminogen" that displayed photophysical phenomena during sensing of vitamin B2 (riboflavin) in mixed aqueous media did not exhibit any significant differences in the structural makeup of their liver, kidney, gills, brain, and muscle tissues when compared with the control group.
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Affiliation(s)
- Kishor S Jagadhane
- Department of Chemistry, Yashwantrao Chavan College Science, Karad, Maharashtra 415124, India
- Medicinal Chemistry Research Laboratory, Department of Chemistry, Shivaji University, Kolhapur, Maharashtra 416004, India
| | - Nagesh B Birajdar
- Department of Zoology, Vishwasrao Naik Arts, Commerce and Baba Naik Science Mahavidyalaya Shirala, Sangli, Maharashtra 415408, India
| | - Govind B Kolekar
- Fluorescence Spectroscopy Research Laboratory, Department of Chemistry, Shivaji University, Kolhapur, Maharashtra 416004, India
| | - Prashant V Anbhule
- Medicinal Chemistry Research Laboratory, Department of Chemistry, Shivaji University, Kolhapur, Maharashtra 416004, India
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Antipina LY, Kotyakova KY, Sorokin PB. Theoretical Analysis of Riboflavin Adsorption on Hexagonal Boron Nitride for Drug Delivery Applications: Unveiling the Influence of Point Defects. Int J Mol Sci 2023; 24:11648. [PMID: 37511405 PMCID: PMC10380725 DOI: 10.3390/ijms241411648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 07/07/2023] [Accepted: 07/13/2023] [Indexed: 07/30/2023] Open
Abstract
This research delves into the intriguing realm of investigating the stability of vitamin B2 (riboflavin, Rf) on hexagonal boron nitride (h-BN), both in its pristine state and in the presence of vacancy defects, with the aim of harnessing their potential as carriers for drug delivery applications. Employing the density functional theory (DFT), we perform binding energy calculations and analyze the electronic structure of the BN@Rf system to unravel the nature of their interactions. Our comprehensive DFT calculations unequivocally demonstrate the spontaneous physical sorption of the drug onto the h-BN surface, facilitated by the formation of π-π stacking interactions. The adsorption energy spans a range from -1.15 to -4.00 eV per system, emphasizing the robust nature of the BN@Rf bonding. The results show that the HOMO and LUMO of riboflavin are located exactly in the region of the iso-alloxazine rings of riboflavin. This arrangement fosters the formation of π-π stacking between riboflavin and boron nitride, effectively facilitating the transfer of electron density within the BN@Rf system. Furthermore, our investigations reveal the significant impact of vacancy defects within the boron nitride lattice. These vacancies alter the behavior of the structure, prompting riboflavin to metamorphose from an electron donor to an electron acceptor, expanding our understanding of the interplay between boron nitride defects and riboflavin sorption. Therefore, it is imperative to exert meticulous oversight of the structural integrity of h-BN, given that the existence of vacancies may lead to a noticeable change in its adsorption properties. The obtained data could amplify our capacity to conceive and refine drug delivery h-BN-based systems.
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Affiliation(s)
- Liubov Yu Antipina
- Laboratory of Inorganic Nanomaterials, Research Center of Inorganic Nanomaterials, National University of Science and Technology "MISIS", Leninsky Prospect 4, 119049 Moscow, Russia
| | - Kristina Yu Kotyakova
- Research Center of Inorganic Nanomaterials, National University of Science and Technology "MISIS", Leninsky Prospect 4, 119049 Moscow, Russia
| | - Pavel B Sorokin
- Laboratory of Inorganic Nanomaterials, Research Center of Inorganic Nanomaterials, National University of Science and Technology "MISIS", Leninsky Prospect 4, 119049 Moscow, Russia
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He Z, Li F, Zuo P, Tian H. Principles and Applications of Resonance Energy Transfer Involving Noble Metallic Nanoparticles. MATERIALS (BASEL, SWITZERLAND) 2023; 16:3083. [PMID: 37109920 PMCID: PMC10145016 DOI: 10.3390/ma16083083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 04/01/2023] [Accepted: 04/11/2023] [Indexed: 06/19/2023]
Abstract
Over the past several years, resonance energy transfer involving noble metallic nanoparticles has received considerable attention. The aim of this review is to cover advances in resonance energy transfer, widely exploited in biological structures and dynamics. Due to the presence of surface plasmons, strong surface plasmon resonance absorption and local electric field enhancement are generated near noble metallic nanoparticles, and the resulting energy transfer shows potential applications in microlasers, quantum information storage devices and micro-/nanoprocessing. In this review, we present the basic principle of the characteristics of noble metallic nanoparticles, as well as the representative progress in resonance energy transfer involving noble metallic nanoparticles, such as fluorescence resonance energy transfer, nanometal surface energy transfer, plasmon-induced resonance energy transfer, metal-enhanced fluorescence, surface-enhanced Raman scattering and cascade energy transfer. We end this review with an outlook on the development and applications of the transfer process. This will offer theoretical guidance for further optical methods in distance distribution analysis and microscopic detection.
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Affiliation(s)
- Zhicong He
- School of Mechanical and Electrical Engineering, Hubei Key Laboratory of Optical Information and Pattern Recognition, Wuhan Institute of Technology, Wuhan 430073, China
- School of Mechanical and Electrical Engineering, Hubei Polytechnic University, Huangshi 435003, China
- Hubei Key Laboratory of Intelligent Transportation Technology and Device, Hubei Polytechnic University, Huangshi 435003, China
| | - Fang Li
- School of Mechanical and Electrical Engineering, Hubei Key Laboratory of Optical Information and Pattern Recognition, Wuhan Institute of Technology, Wuhan 430073, China
| | - Pei Zuo
- School of Mechanical and Electrical Engineering, Hubei Key Laboratory of Optical Information and Pattern Recognition, Wuhan Institute of Technology, Wuhan 430073, China
| | - Hong Tian
- School of Mechanical and Electrical Engineering, Hubei Key Laboratory of Optical Information and Pattern Recognition, Wuhan Institute of Technology, Wuhan 430073, China
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Guan X, Li Z, Geng X, Lei Z, Karakoti A, Wu T, Kumar P, Yi J, Vinu A. Emerging Trends of Carbon-Based Quantum Dots: Nanoarchitectonics and Applications. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2207181. [PMID: 36693792 DOI: 10.1002/smll.202207181] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 12/09/2022] [Indexed: 06/17/2023]
Abstract
Carbon-based quantum dots (QDs) have emerged as a fascinating class of advanced materials with a unique combination of optoelectronic, biocompatible, and catalytic characteristics, apt for a plethora of applications ranging from electronic to photoelectrochemical devices. Recent research works have established carbon-based QDs for those frontline applications through improvements in materials design, processing, and device stability. This review broadly presents the recent progress in the synthesis of carbon-based QDs, including carbon QDs, graphene QDs, graphitic carbon nitride QDs and their heterostructures, as well as their salient applications. The synthesis methods of carbon-based QDs are first introduced, followed by an extensive discussion of the dependence of the device performance on the intrinsic properties and nanostructures of carbon-based QDs, aiming to present the general strategies for device designing with optimal performance. Furthermore, diverse applications of carbon-based QDs are presented, with an emphasis on the relationship between band alignment, charge transfer, and performance improvement. Among the applications discussed in this review, much focus is given to photo and electrocatalytic, energy storage and conversion, and bioapplications, which pose a grand challenge for rational materials and device designs. Finally, a summary is presented, and existing challenges and future directions are elaborated.
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Affiliation(s)
- Xinwei Guan
- Global Innovative Centre for Advanced Nanomaterials, School of Engineering, College of Engineering, Science and Environment, The University of Newcastle, Callaghan, NSW, 2308, Australia
- School of Materials Science and Engineering, University of New South Wales (UNSW), Sydney, NSW, 2052, Australia
| | - Zhixuan Li
- Global Innovative Centre for Advanced Nanomaterials, School of Engineering, College of Engineering, Science and Environment, The University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Xun Geng
- Global Innovative Centre for Advanced Nanomaterials, School of Engineering, College of Engineering, Science and Environment, The University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Zhihao Lei
- Global Innovative Centre for Advanced Nanomaterials, School of Engineering, College of Engineering, Science and Environment, The University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Ajay Karakoti
- Global Innovative Centre for Advanced Nanomaterials, School of Engineering, College of Engineering, Science and Environment, The University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Tom Wu
- School of Materials Science and Engineering, University of New South Wales (UNSW), Sydney, NSW, 2052, Australia
- Department of Applied Physics, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, 999077, P. R. China
| | - Prashant Kumar
- Global Innovative Centre for Advanced Nanomaterials, School of Engineering, College of Engineering, Science and Environment, The University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Jiabao Yi
- Global Innovative Centre for Advanced Nanomaterials, School of Engineering, College of Engineering, Science and Environment, The University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Ajayan Vinu
- Global Innovative Centre for Advanced Nanomaterials, School of Engineering, College of Engineering, Science and Environment, The University of Newcastle, Callaghan, NSW, 2308, Australia
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Liu X, Liu J, Zhao X, Zhang D, Wang Q. Ag NPs/PMMA nanocomposite as an efficient platform for fluorescence regulation of riboflavin. OPTICS EXPRESS 2022; 30:34918-34931. [PMID: 36242494 DOI: 10.1364/oe.470454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 08/25/2022] [Indexed: 06/16/2023]
Abstract
The fluorescence detection platform has broad application in many fields. In this paper, we report a simple and efficient fluorescence detection platform based on the synergistic effects of Ag nanoparticles (Ag NPs) and polymethylmethacrylate (PMMA). Ag NPs were introduced to realize the plasmon enhancement fluorescence and a thin PMMA layer was used to adjust the distance between Ag NPs and riboflavin. The thin PMMA layer not only enhances the fluorescence by enhancing adhesion of substrate, but also optimizes the plasmon enhancement fluorescence effect by serving as the spacer. The fluorescence enhancement factor based on this platform shows a trend of increasing with the decrease of the concentration of riboflavin, and the detection of riboflavin is realized based on this feature, the lowest detectable concentration is as low as 0.27 µM. In addition to the detection based on plasmon enhancement fluorescence, the detection of riboflavin at low concentrations can also be realized by the shift and broadening of the fluorescence peak due to the Ag NPs. The combination of the two ways of plasmon enhancement fluorescence and shift of the fluorescence spectra is used for the detection of riboflavin. These results show that the platform has great potential applications in the field of detection and sensing.
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Khanlarkhani S, Akbarzadeh AR, Rahimi R. A retrospective-prospective survey of porphyrinoid fluorophores: towards new architectures as an electron transfer systems promoter. J INCL PHENOM MACRO 2022. [DOI: 10.1007/s10847-022-01147-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Recent analytical methodologies and analytical trends for riboflavin (vitamin B2) analysis in food, biological and pharmaceutical samples. Trends Analyt Chem 2021. [DOI: 10.1016/j.trac.2021.116412] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Optimizing the Efficiency of a Cytocompatible Carbon-Dots-Based FRET Platform and Its Application as a Riboflavin Sensor in Beverages. NANOMATERIALS 2021; 11:nano11081981. [PMID: 34443812 PMCID: PMC8399497 DOI: 10.3390/nano11081981] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/13/2021] [Revised: 07/17/2021] [Accepted: 07/20/2021] [Indexed: 12/19/2022]
Abstract
In this work, the Förster resonance energy transfer (FRET) between carbon dots (CDs) as energy donors and riboflavin (RF) as an energy acceptor was optimized and the main parameters that characterize the FRET process were determined. The results were successfully applied in the development of an ultrasensitive ratiometric fluorescent sensor for the selective and sensitive determination of RF in different beverages. Water-soluble CDs with a high quantum yield (54%) were synthesized by a facile and direct microwave-assisted technique. The CDs were characterized by transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), dynamic light scattering (DLS), Zeta potential, and UV-visible and molecular fluorescence spectroscopy. The study of the FRET process at two donor concentrations showed that the energy transfer efficiency decreases as the donor concentration increases, confirming its dependence on the acceptor:donor ratio in nanoparticle-based systems. The results show the importance of optimizing the FRET process conditions to improve the corresponding output signal. The variation in the ratiometric signal with the concentration of RF showed linearity in a concentration range of 0 to 11 µM with R2 = 0.9973 and a detection limit of 0.025 µM. The developed nanosensor showed good selectivity over other possible types of interference. The sensor was then applied for the determination of RF in beverage samples using the standard addition method with recoveries between 96% and 106%. Preliminary cytocompatibility tests carried out with breast cancer cells (MDA-MB-231) revealed the nanosensor to be cytocompatible in its working concentration regime, even after long incubation times with cells. Altogether, the developed RF determination method was found to be fast, low-cost, highly sensitive, and selective and can be extended to other samples of interest in the biological and food sectors. Moreover, thanks to its long-lasting cytocompatibility, the developed platform can also be envisaged for other applications of biological interest, such as intracellular sensing and staining for live cell microscopy.
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Anderson NT, Weyant KB, Mukherjee A. Characterization of flavin binding in oxygen-independent fluorescent reporters. AIChE J 2020; 66. [PMID: 34305141 DOI: 10.1002/aic.17083] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Fluorescent proteins based on light, oxygen, and voltage (LOV) sensing photoreceptors are among the few reporter gene technologies available for studying living systems in oxygen-free environments that render reporters based on the green fluorescent protein nonfluorescent. LOV reporters develop fluorescence by binding flavin mononucleotide (FMN), which they endogenously obtain from cells. As FMN is essential to cell physiology as well as for determining fluorescence in LOV proteins, it is important to be able to study and characterize flavin binding in LOV reporters. To this end, we report a method for reversibly separating FMN from two commonly used LOV reporters to prepare stable and soluble apoproteins. Using fluorescence titration, we measured the equilibrium dissociation constant for binding with all three cellular flavins: FMN, flavin adenine dinucleotide, and riboflavin. Finally, we exploit the riboflavin affinity of apo LOV reporters, identified in this work, to develop a fluorescence turn-on biosensor for vitamin B2.
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Affiliation(s)
- Nolan T. Anderson
- Department of Chemical Engineering University of California Santa Barbara California 93106 USA
| | - Kevin B. Weyant
- Smith School of Chemical & Biomolecular Engineering Cornell University Ithaca New York 14853 USA
| | - Arnab Mukherjee
- Department of Chemical Engineering University of California Santa Barbara California 93106 USA
- Department of Chemistry University of California Santa Barbara California 93106 USA
- Neuroscience Research Institute University of California Santa Barbara California 93106 USA
- Center for Bioengineering University of California Santa Barbara California 93106 USA
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Neema P, Tomy AM, Cyriac J. Chemical sensor platforms based on fluorescence resonance energy transfer (FRET) and 2D materials. Trends Analyt Chem 2020. [DOI: 10.1016/j.trac.2019.115797] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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12
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Sulfur and nitrogen doped carbon quantum dots for detection of glutathione and reduction of cellular nitric oxide in microglial cells. JOURNAL OF PHARMACEUTICAL INVESTIGATION 2020. [DOI: 10.1007/s40005-019-00466-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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13
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Electrochemiluminescent Chemosensors for Clinical Applications: A Review. BIOCHIP JOURNAL 2019. [DOI: 10.1007/s13206-019-3301-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Xu W, Zhao A, Zuo F, Hussain HMJ. A graphene oxide-based hairpin probe coupling duplex-specific nuclease signal amplification for detection and imaging of mRNA in living cells. Talanta 2019; 195:732-738. [PMID: 30625609 DOI: 10.1016/j.talanta.2018.11.078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2018] [Revised: 11/12/2018] [Accepted: 11/22/2018] [Indexed: 11/30/2022]
Abstract
In situ imaging of mRNA in living cells can help to monitor the real time mRNA expression and also useful for diagnosis and prognosis of the diseases. In this study, a new strategy was designed for simple, sensitive, and selective platform to detect the mRNA levels by combining a hairpin probe-graphene oxide (HP1/GO) and duplex-specific nuclease signal amplification (DSNSA). Initially, the DNA probe was adsorbed on the surface of GO to protect it from enzymatic digestion. Then, the target mRNA (T1) was hybridized with a partial hairpin probe which formed a duplex. Finally, under the action of DSN nuclease, the ssDNA in the DNA/RNA hybrid was selectively cleaved and produced small fragments. Then, T1 triggered the next reaction cycle, constituting a new circular exponential amplification. Here, we conclude that this assay is highly sensitive for the detection of target mRNA with the lower detection limit of 1 fM under optimal conditions. Furthermore, this strategy was successfully used for imaging of mRNA in living cells.
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Affiliation(s)
- Wei Xu
- Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei 230031, PR China; University of Science and Technology of China, Hefei 230027, PR China; State Key Laboratory of Transducer Technology, Chinese Academy of Sciences, Hefei 230031, PR China
| | - Aiwu Zhao
- Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei 230031, PR China; University of Science and Technology of China, Hefei 230027, PR China; State Key Laboratory of Transducer Technology, Chinese Academy of Sciences, Hefei 230031, PR China.
| | - Fangtao Zuo
- Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei 230031, PR China; University of Science and Technology of China, Hefei 230027, PR China; State Key Laboratory of Transducer Technology, Chinese Academy of Sciences, Hefei 230031, PR China
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Ratiometric fluorescence detection of riboflavin based on fluorescence resonance energy transfer from nitrogen and phosphorus co-doped carbon dots to riboflavin. Anal Bioanal Chem 2019; 411:2803-2808. [PMID: 30919015 DOI: 10.1007/s00216-019-01725-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 02/21/2019] [Accepted: 02/26/2019] [Indexed: 01/03/2023]
Abstract
Fluorescent nitrogen and phosphorus co-doped carbon dots (NPCDs) were prepared via a hydrothermal method with citric acid and O-phosphorylethanolamine as precursors. The overlap between the absorption spectrum of riboflavin and the fluorescence emission spectrum of the NPCDs and the relative proximity of the NPCDs to riboflavin due to hydrogen bonding facilitated the formation of a NPCDs/riboflavin fluorescence resonance energy transfer (FRET) system. Thus, a ratiometric fluorescence method for the detection of riboflavin based on the formation of this NPCDs/riboflavin FRET system was developed. The method displayed a sensitive and selective response to riboflavin in the range 0.5-50 μmol/L with a detection limit of 0.17 μmol/L. It was also found to be suitable for the detection of riboflavin in milk and riboflavin pharmaceutical tablets. Graphical abstract Illustration of the preparation of NPCDs and the ratiometric fluorescence detection of riboflavin using the NPCDs/riboflavin FRET system.
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Dey N, Biswakarma D, Bajpai A, Moorthy JN, Bhattacharya S. Modulation of Excited-State Proton-Transfer Dynamics inside the Nanocavity of Microheterogeneous Systems: Microenvironment-Sensitive Förster Energy Transfer to Riboflavin. Chemphyschem 2019; 20:881-889. [PMID: 30548519 DOI: 10.1002/cphc.201801085] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Revised: 08/15/2018] [Indexed: 12/11/2022]
Abstract
The excited-state proton-transfer efficiency of a tetraarylpyrene derivative, 1,3,6,8-tetrakis(4-hydroxy-2,6-dimethylphenyl)pyrene (TDMPP), was investigated thoroughly in the presence of various surfactant assemblies, such as micelles and vesicles. The confined microheterogeneous environments can significantly retard the extent of the excited-state proton-transfer process, resulting in a distinguishable optical signal compared to that in the bulk medium. Physical characteristics of the surfactant assemblies, such as order, interfacial hydration, and surface charge, influence the proton transfer process and allow multiparametric sensing. A higher degree of interfacial hydration facilitates the proton-transfer process, while the positively charged head groups of the surfactants specifically stabilize the anionic form of the probe (TDMPP-O*). Furthermore, Forster energy transfer from the probe to riboflavin was studied in a phospholipid membrane, wherein the relative ratio of the neutral versus anionic forms (TDMPP-OH/TDMPP-O*) was found to influence the extent of energy transfer. Overall, we demonstrate how an ultrafast photophysical process, that is, the excited-state proton transfer, can be influenced by the microenvironment.
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Affiliation(s)
- Nilanjan Dey
- Department of Organic Chemistry, Indian Institute of Science, Bangalore, 560012, India
| | - Dipen Biswakarma
- Department of Organic Chemistry, Indian Institute of Science, Bangalore, 560012, India
| | - Alankriti Bajpai
- Department of Chemistry, Indian Institute of Technology Kalyanpur, Kanpur, Uttar Pradesh, 208016
| | - Jarugu Narasimha Moorthy
- Department of Chemistry, Indian Institute of Technology Kalyanpur, Kanpur, Uttar Pradesh, 208016
| | - Santanu Bhattacharya
- Department of Organic Chemistry, Indian Institute of Science, Bangalore, 560012, India.,Current Address: Director's Research Unit, Indian Association for Cultivation of Science, Kolkata, 700032, India
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17
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Monte-Filho SS, Andrade SI, Lima MB, Araujo MC. Synthesis of highly fluorescent carbon dots from lemon and onion juices for determination of riboflavin in multivitamin/mineral supplements. J Pharm Anal 2019; 9:209-216. [PMID: 31297299 PMCID: PMC6598167 DOI: 10.1016/j.jpha.2019.02.003] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 02/19/2019] [Accepted: 02/20/2019] [Indexed: 01/04/2023] Open
Abstract
In this work, lemon and onion biomasses commonly found in street markets are for the first time used to develop a facile, fast and low-cost one-step microwave-assisted carbonization method for synthesis of highly fluorescent carbon dots (CDs). The structure and optical properties of CDs were investigated by TEM, XRD, XRF, UV–Vis, FTIR, and fluorescence spectroscopy. CDs displayed satisfactory optical proprieties, a high quantum yield of 23.6%, and excellent water solubility, and the particle size was 4.23–8.22 nm with an average diameter of 6.15 nm. An efficient fluorescent resonance energy transfer (FRET) between the CDs and riboflavin was achieved with CDs acting as donor and riboflavin as acceptor. A linear relationship between FRET and the riboflavin concentration from 0.10 to 3.0 μg/mL was observed, allowing the development of an accurate and fast analytical method to determine this vitamin in multivitamin/mineral supplements. Despite the potential interferences in these supplements, CDs were selective for riboflavin under optimized conditions. A paired t-test at a 95% confidence level indicated no statistically significant difference between the proposed and the reference methods. Recovery test presented values ranged from 96.0% to 101.4%. The limit of detection and relative standard deviation were estimated at 1.0 ng/mL and <2.6% (n = 3), respectively. CDs were successfully synthesized in a domestic microwave oven (1450 W, 6 min), presenting satisfactory parameters when compared with results of other studies reported in the literature, suggesting that the proposed method is a potentially useful method for the synthesis of CDs and determination of riboflavin. Lemon and onion were for the first time used to synthesize carbon dots (CDs). CDs displayed satisfactory optical proprieties and high quantum yield of 23.6%. A fluorescent resonance energy transfer between CDs and riboflavin was achieved. A method was successfully developed for riboflavin quantification in supplements. Proposed method provided improved results over previous studies.
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Affiliation(s)
- Severino S. Monte-Filho
- Universidade Federal da Paraíba, CCEN, Departamento de Química, P.O. Box 5093, Zip Code 58051-970, João Pessoa, PB, Brazil
| | - Stefani I.E. Andrade
- Universidade Federal da Paraíba, CCEN, Departamento de Química, P.O. Box 5093, Zip Code 58051-970, João Pessoa, PB, Brazil
| | - Marcelo B. Lima
- Universidade Federal Rural de Pernambuco – Unidade Acadêmica de Serra Talhada, UAST, Zip Code 56909-535, Serra Talhada, PE, Brazil
| | - Mario C.U. Araujo
- Universidade Federal da Paraíba, CCEN, Departamento de Química, P.O. Box 5093, Zip Code 58051-970, João Pessoa, PB, Brazil
- Corresponding author.
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18
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Liu H, Wang X, Wang H, Nie R. Synthesis and biomedical applications of graphitic carbon nitride quantum dots. J Mater Chem B 2019; 7:5432-5448. [DOI: 10.1039/c9tb01410a] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
This review summarizes the synthetic methods and addresses current applications and future perspectives of graphitic carbon nitride quantum dots in the biomedical field.
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Affiliation(s)
- Hongji Liu
- The Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions
- High Magnetic Field Laboratory
- Hefei Institutes of Physical Science
- Chinese Academy of Sciences
- Hefei 230031
| | - Xingyu Wang
- The Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions
- High Magnetic Field Laboratory
- Hefei Institutes of Physical Science
- Chinese Academy of Sciences
- Hefei 230031
| | - Hui Wang
- The Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions
- High Magnetic Field Laboratory
- Hefei Institutes of Physical Science
- Chinese Academy of Sciences
- Hefei 230031
| | - Rongrong Nie
- Nanjing Stomatological Hospital
- Medical School of Nanjing University
- Nanjing
- P. R. China
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19
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Mondal S, Bairi P, Das S, Nandi AK. Triarylamine-Cored Dendritic Molecular Gel for Efficient Colorometric, Fluorometric, and Impedometeric Detection of Picric Acid. Chemistry 2018; 24:5591-5600. [DOI: 10.1002/chem.201705782] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Indexed: 02/01/2023]
Affiliation(s)
- Sanjoy Mondal
- Polymer Science Unit; Indian Association for the Cultivation of Science, Jadavpur; Kolkata- 700 032 India
| | - Partha Bairi
- Polymer Science Unit; Indian Association for the Cultivation of Science, Jadavpur; Kolkata- 700 032 India
| | - Sujoy Das
- Polymer Science Unit; Indian Association for the Cultivation of Science, Jadavpur; Kolkata- 700 032 India
| | - Arun K. Nandi
- Polymer Science Unit; Indian Association for the Cultivation of Science, Jadavpur; Kolkata- 700 032 India
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20
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Yang L, Liu B, Wang M, Li J, Pan W, Gao X, Li N, Tang B. A Highly Sensitive Strategy for Fluorescence Imaging of MicroRNA in Living Cells and in Vivo Based on Graphene Oxide-Enhanced Signal Molecules Quenching of Molecular Beacon. ACS APPLIED MATERIALS & INTERFACES 2018; 10:6982-6990. [PMID: 29405060 DOI: 10.1021/acsami.7b19284] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
In situ imaging of microRNA (miRNA) in living cells and in vivo is beneficial for promoting the studies on miRNA-related physiological and pathological processes. However, the current strategies usually have a low signal-to-background ratio, which greatly affects the sensitivity and imaging performance. To solve this problem, we developed a highly sensitive strategy for fluorescence imaging of miRNA in living cells and in vivo based on graphene oxide (GO)-enhanced signal molecule quenching of a molecular beacon (MB). 2Cy5-MB was designed by coupling two Cy5 molecules onto the opposite ends of MB. The fluorescence intensities of two Cy5 molecules were reduced because of the self-quenching effect. After adsorbing on the GO surface, the fluorescence quenching of the molecules was enhanced by fluorescence resonance energy transfer. This double-quenching effect significantly reduced the fluorescence background. In the presence of one miRNA molecule, the fluorescence signals of two Cy5 molecules were simultaneously recovered. Therefore, a significantly enhanced signal-to-background ratio was obtained, which greatly improved the detection sensitivity. In the presence of miRNA, the fluorescence intensity of 2Cy5-MB-GO recovered about 156 times and the detection limit was 30 pM. Compared with 1Cy5-MB-GO, the elevated fluorescence intensity was enhanced 8 times and the detection limit was reduced by an order of magnitude. Furthermore, fluorescence imaging experiments demonstrated that 2Cy5-MB-GO could visually detect microRNA-21 in various cancer cells and tumor tissues. This simple and effective strategy provides a new sensing platform for highly sensitive detection and simultaneous imaging analysis of multiple low-level biomarkers in living cells and in vivo.
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Affiliation(s)
- Limin Yang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Molecular and Nano Science, Shandong Normal University , Jinan 250014, P. R. China
| | - Bo Liu
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Molecular and Nano Science, Shandong Normal University , Jinan 250014, P. R. China
| | - Meimei Wang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Molecular and Nano Science, Shandong Normal University , Jinan 250014, P. R. China
| | - Jia Li
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Molecular and Nano Science, Shandong Normal University , Jinan 250014, P. R. China
| | - Wei Pan
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Molecular and Nano Science, Shandong Normal University , Jinan 250014, P. R. China
| | - Xiaonan Gao
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Molecular and Nano Science, Shandong Normal University , Jinan 250014, P. R. China
| | - Na Li
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Molecular and Nano Science, Shandong Normal University , Jinan 250014, P. R. China
| | - Bo Tang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Molecular and Nano Science, Shandong Normal University , Jinan 250014, P. R. China
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21
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Karthik M, Suresh P. Brønsted acidic reduced graphene oxide as a sustainable carbocatalyst: a selective method for the synthesis of C-2-substituted benzimidazole. NEW J CHEM 2018. [DOI: 10.1039/c8nj03257b] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A selective and sustainable methodology for the synthesis of C-2-substituted benzimidazole has been demonstrated using benzenesulfonic acid-grafted reduced graphene oxide as a Brønsted acidic carbocatalyst.
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Affiliation(s)
- Murugan Karthik
- Supramolecular and Catalysis Lab
- Dept. of Natural Products Chemistry
- School of Chemistry
- Madurai Kamaraj University
- Madurai-625021
| | - Palaniswamy Suresh
- Supramolecular and Catalysis Lab
- Dept. of Natural Products Chemistry
- School of Chemistry
- Madurai Kamaraj University
- Madurai-625021
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22
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Li N, Na W, Liu H, Su X. Dual mode detection of amifostine based on gold nanoparticles and sulfanilic acid functionalized graphene quantum dots. NEW J CHEM 2018. [DOI: 10.1039/c8nj01540f] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Visual and fluorescence detection of amifostine based on the inner filter effect of gold nanoparticles on sulfanilic acid functionalized graphene quantum dots.
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Affiliation(s)
- Ning Li
- Department of Analytical Chemistry
- College of Chemistry
- Jilin University
- Changchun
- China
| | - Weidan Na
- Department of Analytical Chemistry
- College of Chemistry
- Jilin University
- Changchun
- China
| | - Hua Liu
- Department of Analytical Chemistry
- College of Chemistry
- Jilin University
- Changchun
- China
| | - Xingguang Su
- Department of Analytical Chemistry
- College of Chemistry
- Jilin University
- Changchun
- China
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23
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Feng H, Qian Z. Functional Carbon Quantum Dots: A Versatile Platform for Chemosensing and Biosensing. CHEM REC 2017; 18:491-505. [PMID: 29171708 DOI: 10.1002/tcr.201700055] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Accepted: 11/14/2017] [Indexed: 12/17/2022]
Abstract
Carbon quantum dot has emerged as a new promising fluorescent nanomaterial due to its excellent optical properties, outstanding biocompatibility and accessible fabrication methods, and has shown huge application perspective in a variety of areas, especially in chemosensing and biosensing applications. In this personal account, we give a brief overview of carbon quantum dots from its origin and preparation methods, present some advance on fluorescence origin of carbon quantum dots, and focus on development of chemosensors and biosensors based on functional carbon quantum dots. Comprehensive advances on functional carbon quantum dots as a versatile platform for sensing from our group are included and summarized as well as some typical examples from the other groups. The biosensing applications of functional carbon quantum dots are highlighted from selective assays of enzyme activity to fluorescent identification of cancer cells and bacteria.
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Affiliation(s)
- Hui Feng
- Department of Chemistry, College of Life Science and Chemistry, Zhejiang Normal University, Yingbin Road 688, Jinhua, Zhejiang Province, People's Republic of China
| | - Zhaosheng Qian
- Department of Chemistry, College of Life Science and Chemistry, Zhejiang Normal University, Yingbin Road 688, Jinhua, Zhejiang Province, People's Republic of China
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24
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Wang H, Ma Q, Wang Y, Wang C, Qin D, Shan D, Chen J, Lu X. Resonance energy transfer based electrochemiluminescence and fluorescence sensing of riboflavin using graphitic carbon nitride quantum dots. Anal Chim Acta 2017; 973:34-42. [DOI: 10.1016/j.aca.2017.03.041] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2017] [Revised: 03/13/2017] [Accepted: 03/20/2017] [Indexed: 01/06/2023]
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25
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Kundu A, Nandi S, Das P, Nandi AK. Facile and green approach to prepare fluorescent carbon dots: Emergent nanomaterial for cell imaging and detection of vitamin B2. J Colloid Interface Sci 2016; 468:276-283. [DOI: 10.1016/j.jcis.2016.01.070] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Revised: 01/26/2016] [Accepted: 01/28/2016] [Indexed: 12/26/2022]
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26
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Han J, Zou HY, Gao MX, Huang CZ. A graphitic carbon nitride based fluorescence resonance energy transfer detection of riboflavin. Talanta 2016; 148:279-84. [DOI: 10.1016/j.talanta.2015.10.038] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Revised: 10/10/2015] [Accepted: 10/14/2015] [Indexed: 12/27/2022]
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27
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Maiti S, Kundu S, Ghosh D, Mondal S, Roy CN, Saha A. Synthesis and spectral measurements of sulphonated graphene: some anomalous observations. Phys Chem Chem Phys 2016; 18:6701-5. [DOI: 10.1039/c5cp05799j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The present report demonstrates how a sulphonation process, a key route for synthesizing water soluble graphene, can influence the optical behavior of precursor graphene oxide, intermediate reaction products and sulphonated graphene.
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Affiliation(s)
- Susmita Maiti
- UGC-DAE Consortium for Scientific Research
- Kolkata Centre
- Kolkata 700098
- India
| | - Somashree Kundu
- UGC-DAE Consortium for Scientific Research
- Kolkata Centre
- Kolkata 700098
- India
| | - Debasmita Ghosh
- UGC-DAE Consortium for Scientific Research
- Kolkata Centre
- Kolkata 700098
- India
| | - Somrita Mondal
- UGC-DAE Consortium for Scientific Research
- Kolkata Centre
- Kolkata 700098
- India
| | - Chandra Nath Roy
- UGC-DAE Consortium for Scientific Research
- Kolkata Centre
- Kolkata 700098
- India
| | - Abhijit Saha
- UGC-DAE Consortium for Scientific Research
- Kolkata Centre
- Kolkata 700098
- India
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28
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Díez-Pascual AM, García-García D, San Andrés MP, Vera S. Determination of riboflavin based on fluorescence quenching by graphene dispersions in polyethylene glycol. RSC Adv 2016. [DOI: 10.1039/c5ra25547c] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A quenching phenomenon of riboflavin fluorescence was found in graphene dispersions in PEG ascribed to π–π stacking and H-bonding interactions.
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Affiliation(s)
- Ana M. Díez-Pascual
- Analytical Chemistry, Physical Chemistry and Chemical Engineering Department
- Faculty of Biology
- Environmental Sciences and Chemistry
- Alcalá University
- Madrid
| | - Diego García-García
- Analytical Chemistry, Physical Chemistry and Chemical Engineering Department
- Faculty of Biology
- Environmental Sciences and Chemistry
- Alcalá University
- Madrid
| | - María Paz San Andrés
- Analytical Chemistry, Physical Chemistry and Chemical Engineering Department
- Faculty of Biology
- Environmental Sciences and Chemistry
- Alcalá University
- Madrid
| | - Soledad Vera
- Analytical Chemistry, Physical Chemistry and Chemical Engineering Department
- Faculty of Biology
- Environmental Sciences and Chemistry
- Alcalá University
- Madrid
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29
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Hussain S, Malik AH, Iyer PK. FRET-assisted selective detection of flavins via cationic conjugated polyelectrolyte under physiological conditions. J Mater Chem B 2016; 4:4439-4446. [DOI: 10.1039/c6tb01350c] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Cationic conjugated polyelectrolyte PMI performs ppb level detection and discrimination of flavins (RF, FMN and FAD) in aqueous media as well as in biological medium like serum.
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Affiliation(s)
- Sameer Hussain
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati-781039
- India
| | - Akhtar Hussain Malik
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati-781039
- India
| | - Parameswar Krishnan Iyer
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati-781039
- India
- Centre for Nanotechnology
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30
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Fluorescent carbon dots for sensitive determination and intracellular imaging of zinc(II) ion. Mikrochim Acta 2015. [DOI: 10.1007/s00604-015-1592-7] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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31
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Determination of ascorbic acid, dopamine, and uric acid by a novel electrochemical sensor based on pristine graphene. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.02.116] [Citation(s) in RCA: 180] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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32
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Kundu A, Nandi S, Das P, Nandi AK. Fluorescent graphene oxide via polymer grafting: an efficient nanocarrier for both hydrophilic and hydrophobic drugs. ACS APPLIED MATERIALS & INTERFACES 2015; 7:3512-3523. [PMID: 25612470 DOI: 10.1021/am507110r] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Functionalized graphene-based drug delivery vehicles have conquered a significant position because functionalization improves its biocompatibility and stability in cell medium, leaving sufficient graphitic basal plane for drug loading through π-π stacking. In this study, poly(N-isopropylacrylamide) (PNIPAM) is covalently grafted from the surface of graphene oxide (GO) via a facile, eco-friendly and an easy procedure of free radical polymerization (FRP) using ammonium persulfate initiator. Various spectroscopic and microscopic studies confirm the successful grafting of PNIPAM from GO surface. PNIPAM-grafted GO (GPNM) exhibits enhanced thermal stability, improved dispersibility both in aqueous and cell medium, and better biocompatibility and cell viability compared to GO. Interestingly, GPNM displays an exciting fluorescence property in aqueous medium, which is a hike of intensity at 36 °C due to the lower critical solution temperature (LCST) of PNIPAM chains (32 °C). Moreover both hydrophilic (doxorubicin (DOX)) and hydrophobic (indomethacin (IMC)) drugs loaded on the surface of GPNM hybrid exhibits its efficacy as an efficient carrier for both types of drugs. Cellular uptakes of free DOX and DOX-loaded GPNM (GPNM-DOX) are evidenced both from optical and fluorescence imaging of live cells, and the efficiency of drug is significantly improved in the loaded system. The release of DOX from GPNM-DOX was achieved at pH 4, relevant to the environment of cancer cells. The pH-triggered release of hydrophobic drug was also studied using UV-vis spectroscopy via alginate encapsulation, showing a great enhancement at pH = 7.4. The IMC is also found to be released by human serum albumin using dialysis technique. The GPNM nanomaterial shows the property of simultaneous loading of DOX and IMC as well as pH-triggered simultaneous release of both of the drugs.
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Affiliation(s)
- Aniruddha Kundu
- Polymer Science Unit, Indian Association for the Cultivation of Science , Jadavpur, Kolkata 700 032, India
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33
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Wang J, Wei J, Su S, Qiu J. Novel fluorescence resonance energy transfer optical sensors for vitamin B12 detection using thermally reduced carbon dots. NEW J CHEM 2015. [DOI: 10.1039/c4nj00538d] [Citation(s) in RCA: 95] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
After thermal reduction, the quantum yield of thermally reduced carbon dots demonstrated a 5-fold increase over that of the original carbon dots.
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Affiliation(s)
- Jilong Wang
- Department of Mechanical Engineering
- Texas Tech University
- Lubbock
- USA
| | - Junhua Wei
- Department of Mechanical Engineering
- Texas Tech University
- Lubbock
- USA
| | - Siheng Su
- Department of Mechanical Engineering
- Texas Tech University
- Lubbock
- USA
| | - Jingjing Qiu
- Department of Mechanical Engineering
- Texas Tech University
- Lubbock
- USA
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34
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Ghosh R, Das S, Chatterjee DP, Nandi AK. Cationic polythiophene for specific detection of cyanide ions in water using fluorometric technique. RSC Adv 2015. [DOI: 10.1039/c5ra17448a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
A new fluorometric cyanide sensor using cationic polythiophene exhibits high sensitivity, selectivity with a low detection limit (4.4 ppb) in water.
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Affiliation(s)
- Radhakanta Ghosh
- Polymer Science Unit
- Indian Association for the Cultivation of Science
- Kolkata-700 032
- India
| | - Sandip Das
- Polymer Science Unit
- Indian Association for the Cultivation of Science
- Kolkata-700 032
- India
| | | | - Arun K. Nandi
- Polymer Science Unit
- Indian Association for the Cultivation of Science
- Kolkata-700 032
- India
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35
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Wang Y, Zhuang Q, Ni Y. Fabrication of riboflavin electrochemical sensor based on homoadenine single-stranded DNA/molybdenum disulfide–graphene nanocomposite modified gold electrode. J Electroanal Chem (Lausanne) 2015. [DOI: 10.1016/j.jelechem.2014.10.028] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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36
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Electrosynthesis of high-density polythiophene nanotube arrays and their application for sensing of riboflavin. J Mol Liq 2014. [DOI: 10.1016/j.molliq.2014.08.035] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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