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Kang TW, Lee JH, Lee J, Park JH, Shin JH, Ju JM, Lee H, Lee SU, Kim JH. An Ion-Channel-Restructured Zwitterionic Covalent Organic Framework Solid Electrolyte for All-Solid-State Lithium-Metal Batteries. Adv Mater 2023:e2301308. [PMID: 37068790 DOI: 10.1002/adma.202301308] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 03/28/2023] [Indexed: 06/07/2023]
Abstract
Organic solid electrolytes offer an effective route for safe and high-energy-density all-solid-state Li metal batteries. However, it remains a challenge to devise a new strategy to promote the dissociation of strong ion pairs and the transport of ionic components in organic solid electrolytes. Herein, a zwitterionic covalent organic framework (Zwitt-COF) with well-defined chemical and pore structures is prepared as a solid electrolyte capable of accelerating the dissociation and transport of Li ions. The Zwitt-COF solid electrolyte exhibits a high room-temperature ionic conductivity of 1.65 × 10-4 S cm-1 with a wide electrochemical stability window. Besides, the Zwitt-COF solid electrolyte displays stable Li plating/stripping behavior via effective inhibition of the formation of Li dendrites and dead Li, leading to superior long-term cycle performance with retention of 99% discharge capacity and 98% Coulombic efficiency in an all-solid-state Li-metal battery. Theoretical simulations reveal that the incorporation of zwitterionic groups into COF can facilitate the dissociation of strong ion pairs and reconstruct the AA-stacking configuration by dissociative adsorption of Li+ ions on Zwitt-COF producing linear hexagonal ion channels in the Zwitt-COF solid electrolyte. This strategy based on Zwitt-COF can provide an alternative way to construct various solid-state Li batteries.
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Affiliation(s)
- Tae Woog Kang
- Department of Materials Science and Chemical Engineering, Hanyang University, Ansan, 15588, Republic of Korea
| | - Jun-Hyeong Lee
- Department of Materials Science and Chemical Engineering, Hanyang University, Ansan, 15588, Republic of Korea
| | - Jaewoo Lee
- Department of Materials Science and Chemical Engineering, Hanyang University, Ansan, 15588, Republic of Korea
| | - Jung Hyun Park
- Department of Materials Science and Chemical Engineering, Hanyang University, Ansan, 15588, Republic of Korea
| | - Jae-Hoon Shin
- Department of Materials Science and Chemical Engineering, Hanyang University, Ansan, 15588, Republic of Korea
| | - Jong-Min Ju
- Department of Materials Science and Chemical Engineering, Hanyang University, Ansan, 15588, Republic of Korea
| | - Hajin Lee
- School of Chemical Engineering, Sungkyunkwan University, Suwon, 16149, Republic of Korea
| | - Sang Uck Lee
- School of Chemical Engineering, Sungkyunkwan University, Suwon, 16149, Republic of Korea
| | - Jong-Ho Kim
- Department of Materials Science and Chemical Engineering, Hanyang University, Ansan, 15588, Republic of Korea
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Ju JM, Lee CH, Park JH, Lee JH, Lee H, Shin JH, Kwak SY, Lee SU, Kim JH. Structural and Electronic Modulations of Imidazolium Covalent Organic Framework-Derived Electrocatalysts for Oxygen Redox Reactions in Rechargeable Zn-Air Batteries. ACS Appl Mater Interfaces 2022; 14:24404-24414. [PMID: 35584866 DOI: 10.1021/acsami.2c04194] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Covalent organic frameworks (COFs) are promising candidates for the controllable design of electrocatalysts. However, bifunctional electrocatalytic activities for the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) remain challenging in COFs. In this study, imidazolium-rich COFs (IMCOFs) with well-defined active sites and characteristic three-dimensional assembly structures were readily prepared, and their electronic structures were tuned by Co incorporation to elicit bifunctional electrocatalytic activities for the ORR and OER. The Co nanoparticle-incorporated spherical IMCOF-derived electrocatalyst (CoNP-s-IMCOF) exhibited lower overpotentials for the ORR and OER compared with the atomic Co-incorporated planar IMCOF-derived electrocatalyst (Co-p-IMCOF). Computational simulations revealed that the imidazole carbon sites of CoNP-s-IMCOF rather than the triazine carbons were the active sites for the ORR and OER, and its p-band center downshifted via charge transfer, facilitating the chemisorption of oxygen intermediates during the reactions. A Zn-air battery with CoNP-s-IMCOF exhibited a small voltage gap of 1.3 V with excellent durability for 935 cycles. This approach for control over the three-dimensional assembly and electronic structures of IMCOFs can be extended to the development of diverse catalytic nanomaterials for applications of interest.
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Affiliation(s)
- Jong-Min Ju
- Department of Materials Science and Chemical Engineering, Hanyang University, Ansan 15588, Republic of Korea
| | - Chi Ho Lee
- Artie McFerrin Department of Chemical Engineering and Texas A&M Energy Institute, Texas A&M University, College Station, Texas 77843, United States
| | - Jung Hyun Park
- Department of Materials Science and Chemical Engineering, Hanyang University, Ansan 15588, Republic of Korea
| | - Jun-Hyeong Lee
- Department of Materials Science and Chemical Engineering, Hanyang University, Ansan 15588, Republic of Korea
| | - Hajin Lee
- Department of Applied Chemistry, Center for Bionano Intelligence Education and Research, Hanyang University, Ansan 15588, Republic of Korea
| | - Jae-Hoon Shin
- Department of Materials Science and Chemical Engineering, Hanyang University, Ansan 15588, Republic of Korea
| | - Seon-Yeong Kwak
- Department of Agriculture, Forestry and Bioresources, College of Agriculture and Life Science, Seoul National University, Seoul 08826, Korea
| | - Sang Uck Lee
- Department of Applied Chemistry, Center for Bionano Intelligence Education and Research, Hanyang University, Ansan 15588, Republic of Korea
| | - Jong-Ho Kim
- Department of Materials Science and Chemical Engineering, Hanyang University, Ansan 15588, Republic of Korea
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Park JH, Shin JH, Ju JM, Lee JH, Choi C, So Y, Lee H, Kim JH. Modulating the electrocatalytic activity of N-doped carbon frameworks via coupling with dual metals for Zn-air batteries. Nano Converg 2022; 9:17. [PMID: 35415763 PMCID: PMC9005593 DOI: 10.1186/s40580-022-00308-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Accepted: 04/01/2022] [Indexed: 06/14/2023]
Abstract
N-Doped carbon electrocatalysts are a promising alternative to precious metal catalysts to promote oxygen reduction reaction (ORR). However, it remains a challenge to design the desired active sites on carbon skeletons in a controllable manner for ORR. Herein, we developed a facile approach based on oxygen-mediated solvothermal radical reaction (OSRR) for preparation of N-doped carbon electrocatalysts with a pre-designed active site and modulated catalytic activity for ORR. In the OSRR, 2-methylimidazole reacted with Co and Mn salts to form an active site precursor (MnCo-MIm) in N-methyl-2-pyrrolidone (NMP) at room temperature. Then, the reaction temperature increased to 140 °C under an oxygen atmosphere to generate NMP radicals, followed by their polymerization with the pre-formed MnCo-MIm to produce Mn-coupled Co nanoparticle-embedded N-doped carbon framework (MnCo-NCF). The MnCo-NCF showed uniform dispersion of nitrogen atoms and Mn-doped Co nanoparticles on the carbon skeleton with micropores and mesopores. The MnCo-NCF exhibited higher electrocatalytic activity for ORR than did a Co nanoparticle only-incorporated carbon framework due to the improved charge transfer from the Mn-doped Co nanoparticles to the carbon skeleton. In addition, the Zn-air battery assembled with MnCo-NCF had superior performance and durability to the battery using commercial Pt/C. This facile approach can be extended for designing carbon electrocatalysts with desired active sites to promote specific reactions.
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Affiliation(s)
- Jung Hyun Park
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana Champaign, 600 South Mathews Avenue, Urbana, IL, 61801, USA
| | - Jae-Hoon Shin
- Department of Materials Science and Chemical Engineering, Hanyang University, Ansan, 15588, Republic of Korea
| | - Jong-Min Ju
- Department of Materials Science and Chemical Engineering, Hanyang University, Ansan, 15588, Republic of Korea
| | - Jun-Hyeong Lee
- Department of Materials Science and Chemical Engineering, Hanyang University, Ansan, 15588, Republic of Korea
| | - Chanhee Choi
- Department of Materials Science and Chemical Engineering, Hanyang University, Ansan, 15588, Republic of Korea
| | - Yoonhee So
- Department of Materials Science and Chemical Engineering, Hanyang University, Ansan, 15588, Republic of Korea
| | - Hyunji Lee
- Department of Materials Science and Chemical Engineering, Hanyang University, Ansan, 15588, Republic of Korea
| | - Jong-Ho Kim
- Department of Materials Science and Chemical Engineering, Hanyang University, Ansan, 15588, Republic of Korea.
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Kim HI, Yim D, Jeon SJ, Kang TW, Hwang IJ, Lee S, Yang JK, Ju JM, So Y, Kim JH. Modulation of oligonucleotide-binding dynamics on WS 2 nanosheet interfaces for detection of Alzheimer's disease biomarkers. Biosens Bioelectron 2020; 165:112401. [PMID: 32729521 DOI: 10.1016/j.bios.2020.112401] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 06/08/2020] [Accepted: 06/18/2020] [Indexed: 12/20/2022]
Abstract
Non-covalent adsorption and desorption of oligonucleotides on two-dimensional nanosheets are widely employed to design nanobiosensors for the rapid optical detection of targets. A precise control over the weak interactions between nanosheet interfaces and oligonucleotides is crucial for a high-sensing performance. Herein, the interface of ultrathin WS2 nanosheets used as a fluorescence quencher was engineered by four different dextran polymers in an aqueous solution to control the adsorption kinetics and thermodynamics of the DNA probe. The WS2 nanosheets, functionalized by the carboxyl group-bearing dextran (CM-dex-WS2) or the trimethylammonium-modified dextran (TMA-dex-WS2), exhibited 3.6-fold faster adsorption rates of the fluorescein-labeled DNA probe (FAM-DNA), which led to the effective fluorescence quenching of FAM, compared to the nanosheets functionalized with pristine dextran (dex-WS2) or the hydrophobic phenoxy groups-bearing dextran (PhO-dex-WS2). Isothermal titration calorimetry measurements showed that the adsorption strength of FAM-DNA for CM-dex-WS2 was one order of magnitude greater than its hybridization energy for a target microRNA (miR-29a) that is well-known as an Alzheimer's disease (AD) biomarker, leading to the unfavorable desorption of the DNA probe from the surface. In contrast, TMA-dex-WS2 exhibited the proper adsorption strength of FAM-DNA, which was lower than its hybridization energy for miR-29a, leading to its favorable desorption from the nanosheet surface along with the noticeable restoration of the quenched fluorescence after its hybridization with miR-29a. Finally, the interface modulation of WS2 nanosheets allowed the selective and sensitive recognition of miR-29a against non-complementary RNA and single base-mismatched RNA in human serum via increases in target-specific fluorescence.
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Affiliation(s)
- Hye-In Kim
- Department of Chemical Engineering, Hanyang University, Ansan, 426-791, Republic of Korea
| | - DaBin Yim
- Department of Chemical Engineering, Hanyang University, Ansan, 426-791, Republic of Korea
| | - Su-Ji Jeon
- Department of Chemical Engineering, Hanyang University, Ansan, 426-791, Republic of Korea
| | - Tae Woog Kang
- Department of Chemical Engineering, Hanyang University, Ansan, 426-791, Republic of Korea
| | - In-Jun Hwang
- Department of Chemical Engineering, Hanyang University, Ansan, 426-791, Republic of Korea
| | - Sin Lee
- Department of Chemical Engineering, Hanyang University, Ansan, 426-791, Republic of Korea
| | - Jin-Kyoung Yang
- Department of Chemical Engineering, Hanyang University, Ansan, 426-791, Republic of Korea
| | - Jong-Min Ju
- Department of Chemical Engineering, Hanyang University, Ansan, 426-791, Republic of Korea
| | - Yoonhee So
- Department of Chemical Engineering, Hanyang University, Ansan, 426-791, Republic of Korea
| | - Jong-Ho Kim
- Department of Chemical Engineering, Hanyang University, Ansan, 426-791, Republic of Korea.
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Jeon SJ, Choi C, Ju JM, Lee S, Park JH, Kim JH. Tuning the response selectivity of graphene oxide fluorescence by organometallic complexation for neurotransmitter detection. Nanoscale 2019; 11:5254-5264. [PMID: 30864583 DOI: 10.1039/c9nr00643e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
It is of great interest to design nanomaterial biosensors that can selectively detect target molecules without the use of fragile and expensive antibodies. Here, we report a chemical approach to modulate the response selectivity of graphene oxide (GO) fluorescence for neurotransmitters, in order to design an optical biosensor for the selective detection of dopamine without using antibodies. To this end, GO was functionalized with six different amino acids, followed by the immobilization of seven metal ions, resulting in the production of forty-two different GO nanohybrids (denoted GO-AA-MI derivatives). The fluorescence response of GO-AA-MI derivatives to dopamine, norepinephrine, and epinephrine was modulated by varying the type of amino acids and metal ions introduced. Tyrosine-modified GO with Fe2+ ions (GO-Y-Fe) exhibited selective quenching of its fluorescence in the presence of dopamine whereas lysine-modified GO with Au3+ ions (GO-K-Au) showed a selective increase in fluorescence upon addition of norepinephrine. The GO-Y-Fe sensor developed was able to differentiate dopamine from similar structures of norepinephrine and epinephrine, as well as abundant interferents such as ascorbic acid and uric acid, without the use of antibodies. In addition, the GO-Y-Fe sensor successfully detected dopamine secreted from living neuron cells in a rapid and simple manner.
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Affiliation(s)
- Su-Ji Jeon
- Department of Chemical Engineering, Hanyang University, Ansan 426-791, Republic of Korea.
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Kang TW, Han J, Lee S, Hwang IJ, Jeon SJ, Ju JM, Kim MJ, Yang JK, Jun B, Lee CH, Lee SU, Kim JH. 2D transition metal dichalcogenides with glucan multivalency for antibody-free pathogen recognition. Nat Commun 2018; 9:2549. [PMID: 29959329 PMCID: PMC6026184 DOI: 10.1038/s41467-018-04997-w] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Accepted: 06/05/2018] [Indexed: 12/31/2022] Open
Abstract
The ability to control the dimensions and properties of nanomaterials is fundamental to the creation of new functions and improvement of their performances in the applications of interest. Herein, we report a strategy based on glucan multivalent interactions for the simultaneous exfoliation and functionalization of two-dimensional transition metal dichalcogenides (TMDs) in an aqueous solution. The multivalent hydrogen bonding of dextran with bulk TMDs (WS2, WSe2, and MoSe2) in liquid exfoliation effectively produces TMD monolayers with binding multivalency for pathogenic bacteria. Density functional theory simulation reveals that the multivalent hydrogen bonding between dextran and TMD monolayers is very strong and thermodynamically favored (ΔEb = −0.52 eV). The resulting dextran/TMD hybrids (dex-TMDs) exhibit a stronger affinity (Kd = 11 nM) to Escherichia coli O157:H7 (E. coli) than E. coli-specific antibodies and aptamers. The dex-TMDs can effectively detect a single copy of E. coli based on their Raman signal. The detection of pathogenic microorganisms is key consideration for safety across a wide range of fields. Here, the authors report on the simultaneous exfoliation and functionalisation of transition metal dichalcogenides with dextran for antibody-free detection of pathogenic Escherichia coli.
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Affiliation(s)
- Tae Woog Kang
- Department of Chemical Engineering, Hanyang University, Ansan, 426-791, Republic of Korea
| | - Juhee Han
- Department of Chemical Engineering, Hanyang University, Ansan, 426-791, Republic of Korea
| | - Sin Lee
- Department of Chemical Engineering, Hanyang University, Ansan, 426-791, Republic of Korea
| | - In-Jun Hwang
- Department of Chemical Engineering, Hanyang University, Ansan, 426-791, Republic of Korea
| | - Su-Ji Jeon
- Department of Chemical Engineering, Hanyang University, Ansan, 426-791, Republic of Korea
| | - Jong-Min Ju
- Department of Chemical Engineering, Hanyang University, Ansan, 426-791, Republic of Korea
| | - Man-Jin Kim
- Department of Chemical Engineering, Hanyang University, Ansan, 426-791, Republic of Korea
| | - Jin-Kyoung Yang
- Department of Chemical Engineering, Hanyang University, Ansan, 426-791, Republic of Korea
| | - Byoengsun Jun
- Department of Chemical and Molecular Engineering, Hanyang University, Ansan, 426-791, Republic of Korea
| | - Chi Ho Lee
- Department of Chemical and Molecular Engineering, Hanyang University, Ansan, 426-791, Republic of Korea
| | - Sang Uck Lee
- Department of Chemical and Molecular Engineering, Hanyang University, Ansan, 426-791, Republic of Korea.
| | - Jong-Ho Kim
- Department of Chemical Engineering, Hanyang University, Ansan, 426-791, Republic of Korea.
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Kim MJ, Jeon SJ, Kang TW, Ju JM, Yim D, Kim HI, Park JH, Kim JH. 2H-WS 2 Quantum Dots Produced by Modulating the Dimension and Phase of 1T-Nanosheets for Antibody-Free Optical Sensing of Neurotransmitters. ACS Appl Mater Interfaces 2017; 9:12316-12323. [PMID: 28319663 DOI: 10.1021/acsami.7b01644] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Modulating the dimensions and phases of transition metal dichalcogenides is of great interest to enhance their intrinsic properties or to create new physicochemical properties. Herein, we report an effective approach to synthesize 2H-WS2 quantum dots (QDs) via the dimension and phase engineering of 1T-WS2 nanosheets. The solvothermal reaction of chemically exfoliated 1T-WS2 nanosheets in N-methyl-2-pyrrolidone (NMP) under an N2 atmosphere induced their chopping and phase transition at lower temperature to produce 2H-WS2 QDs with a high quantum yield (5.5 ± 0.3%). Interestingly, this chopping and phase transition process showed strong dependency on solvent; WS2 QDs were not produced in other solvents such as 1,4-dioxane and dimethyl sulfoxide. Mechanistic investigations suggested that NMP radicals played a crucial role in the effective production of 2H-WS2 QDs from 1T-WS2 nanosheets. WS2 QDs were successfully applied for the selective, sensitive, and rapid detection of dopamine in human serum (4 min, as low as 23.8 nM). The intense fluorescence of WS2 QDs was selectively quenched upon the addition of dopamine and Au3+ ions due to fluorescence resonance energy transfer between WS2 QDs and the quickly formed Au nanoparticles. This new sensing principle enabled us to discriminate dopamine from dopamine-derivative neurotransmitters including epinephrine and norepinephrine, as well as other interference compounds.
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Affiliation(s)
- Man-Jin Kim
- Department of Chemical Engineering, Hanyang University , Ansan 426-791, Republic of Korea
| | - Su-Ji Jeon
- Department of Chemical Engineering, Hanyang University , Ansan 426-791, Republic of Korea
| | - Tae Woog Kang
- Department of Chemical Engineering, Hanyang University , Ansan 426-791, Republic of Korea
| | - Jong-Min Ju
- Department of Chemical Engineering, Hanyang University , Ansan 426-791, Republic of Korea
| | - DaBin Yim
- Department of Chemical Engineering, Hanyang University , Ansan 426-791, Republic of Korea
| | - Hye-In Kim
- Department of Chemical Engineering, Hanyang University , Ansan 426-791, Republic of Korea
| | - Jung Hyun Park
- Department of Chemical Engineering, Hanyang University , Ansan 426-791, Republic of Korea
| | - Jong-Ho Kim
- Department of Chemical Engineering, Hanyang University , Ansan 426-791, Republic of Korea
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Yang JK, Kwak SY, Jeon SJ, Lee E, Ju JM, Kim HI, Lee YS, Kim JH. Proteolytic disassembly of peptide-mediated graphene oxide assemblies for turn-on fluorescence sensing of proteases. Nanoscale 2016; 8:12272-12281. [PMID: 27271225 DOI: 10.1039/c6nr02815b] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Molecule-induced assembly of nanomaterials can alter their unique chemical and physical properties, which can be a promising approach for sensing. Herein, we demonstrate an optical 'turn-on' biosensor for the detection of matrix metalloproteinase-2 (MMP-2), fabricated by means of a peptide-induced assembly of fluorescent graphene oxide (GO). Functionalization of GO with a peptide substrate for MMP-2 bearing a thiol group leads to its self-assembly via disulfide bonding, accompanied by self-quenching of GO's strong fluorescence. This peptide-induced GO assembly is then disassembled by proteolytic cleavage in the presence of MMP-2, thereby restoring the level of self-quenched GO fluorescence. With this approach, we are able to detect MMP-2 and to investigate the kinetic parameters of MMP-2 activity. The GO-peptide assembly is successfully applied to the selective and sensitive detection of MMP-2 secreted by living cells, human hepatocytes HepG2, at a concentration of 2 ng mL(-1).
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Affiliation(s)
- Jin-Kyoung Yang
- School of Chemical and Biological Engineering, Seoul National University, Seoul 151-744, Republic of Korea.
| | - Seon-Yeong Kwak
- Department of Chemical Engineering, Hanyang University, Ansan 426-791, Republic of Korea.
| | - Su-Ji Jeon
- Department of Chemical Engineering, Hanyang University, Ansan 426-791, Republic of Korea.
| | - Eunjin Lee
- School of Chemical and Biological Engineering, Seoul National University, Seoul 151-744, Republic of Korea.
| | - Jong-Min Ju
- Department of Chemical Engineering, Hanyang University, Ansan 426-791, Republic of Korea.
| | - Hye-In Kim
- Department of Chemical Engineering, Hanyang University, Ansan 426-791, Republic of Korea.
| | - Yoon-Sik Lee
- School of Chemical and Biological Engineering, Seoul National University, Seoul 151-744, Republic of Korea.
| | - Jong-Ho Kim
- Department of Chemical Engineering, Hanyang University, Ansan 426-791, Republic of Korea.
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Kang TW, Jeon SJ, Kim HI, Park JH, Yim D, Lee HR, Ju JM, Kim MJ, Kim JH. Optical Detection of Enzymatic Activity and Inhibitors on Non-Covalently Functionalized Fluorescent Graphene Oxide. ACS Nano 2016; 10:5346-5353. [PMID: 27136042 DOI: 10.1021/acsnano.6b01495] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
It has been of great interest to measure the activity of acetylcholinesterase (AChE) and its inhibitor, as AChE is known to accelerate the aggregation of the amyloid beta peptides that underlie Alzheimer's disease. Herein, we report the development of graphene oxide (GO) fluorescence-based biosensors for the detection of AChE activity and AChE inhibitors. To this end, GO was non-covalently functionalized with phenoxy-modified dextran (PhO-dex-GO) through hydrophobic interaction; the resulting GO showed excellent colloidal stability and intense fluorescence in various aqueous solutions as compared to pristine GO and the GO covalently functionalized with dextran. The fluorescence of PhO-dex-GO remarkably increased as AChE catalyzed the hydrolysis of acetylthiocholine (ATCh) to give thiocholine and acetic acid. It was found that the turn-on fluorescence response of PhO-dex-GO to AChE activity was induced by protonation of carboxyl groups on it from the product of the enzymatic hydrolysis reaction, acetic acid. On the basis of its turn-on fluorescence response, PhO-dex-GO was able to report kinetic and thermodynamic parameters involving a maximum velocity, a Michaelis constant, and an inhibition dissociation constant for AChE activity and inhibition. These parameters enable us to determine the activity of AChE and the efficiency of the inhibitor.
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Affiliation(s)
- Tae Woog Kang
- Department of Chemical Engineering, Hanyang University , Ansan 426-791, Republic of Korea
| | - Su-Ji Jeon
- Department of Chemical Engineering, Hanyang University , Ansan 426-791, Republic of Korea
| | - Hye-In Kim
- Department of Chemical Engineering, Hanyang University , Ansan 426-791, Republic of Korea
| | - Jung Hyun Park
- Department of Chemical Engineering, Hanyang University , Ansan 426-791, Republic of Korea
| | - DaBin Yim
- Department of Chemical Engineering, Hanyang University , Ansan 426-791, Republic of Korea
| | - Hye-Rim Lee
- Department of Chemical Engineering, Hanyang University , Ansan 426-791, Republic of Korea
| | - Jong-Min Ju
- Department of Chemical Engineering, Hanyang University , Ansan 426-791, Republic of Korea
| | - Man-Jin Kim
- Department of Chemical Engineering, Hanyang University , Ansan 426-791, Republic of Korea
| | - Jong-Ho Kim
- Department of Chemical Engineering, Hanyang University , Ansan 426-791, Republic of Korea
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Jeon SJ, Kwak SY, Yim D, Ju JM, Kim JH. Chemically-Modulated Photoluminescence of Graphene Oxide for Selective Detection of Neurotransmitter by “Turn-On” Response. J Am Chem Soc 2014; 136:10842-5. [DOI: 10.1021/ja504276z] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Su-Ji Jeon
- Department of Chemical Engineering, Hanyang University, Ansan 426-791, Republic of Korea
| | - Seon-Yeong Kwak
- Department of Chemical Engineering, Hanyang University, Ansan 426-791, Republic of Korea
| | - DaBin Yim
- Department of Chemical Engineering, Hanyang University, Ansan 426-791, Republic of Korea
| | - Jong-Min Ju
- Department of Chemical Engineering, Hanyang University, Ansan 426-791, Republic of Korea
| | - Jong-Ho Kim
- Department of Chemical Engineering, Hanyang University, Ansan 426-791, Republic of Korea
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Eriksson CJ, Fukunaga T, Sarkola T, Chen WJ, Chen CC, Ju JM, Cheng AT, Yamamoto H, Kohlenberg-Müller K, Kimura M, Murayama M, Matsushita S, Kashima H, Higuchi S, Carr L, Viljoen D, Brooke L, Stewart T, Foroud T, Su J, Li TK, Whitfield JB. Functional relevance of human adh polymorphism. Alcohol Clin Exp Res 2001; 25:157S-163S. [PMID: 11391066 DOI: 10.1097/00000374-200105051-00027] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
This article represents the proceedings of a symposium at the 2000 ISBRA Meeting in Yokohama, Japan. The chairs were C. J. Peter Eriksson and Tatsushige Fukunaga. The presentations were (1) 4-Methylpyrazole as a tool in the investigation of the role of ADH in the actions of alcohol in humans, by Taisto Sarkola and C. J. Peter Eriksson; (2) ADH2 polymorphism and flushing in Asian populations, by Wei J. Chen, C. C. Chen, J. M. Ju, and Andrew T. A. Cheng; (3) Role of ADH3 genotypes in the acute effects of alcohol in a Finnish population, by Hidetaka Yamamoto, Kathrin Kohlenberg-Müller, and C. J. Peter Eriksson; (4) Clinical characteristics and disease course of alcoholics with different ADH2 genotypes, by Mitsuru Kimura, Masanobu Murayama, Sachio Matsushita, Haruo Kashima, and Susumu Higuchi; (5) ADH2 polymorphism, alcohol drinking, and birth defects, by Lucinda Carr, D. Viljoen, L. Brooke, T. Stewart, T. Foroud, J. Su, and Ting-Kai Li; and (6) ADH genotypes and alcohol use in Europeans, by John B. Whitfield.
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Affiliation(s)
- C J Eriksson
- Department of Mental Health and Alcohol Research, National Public Health Institute, Helsinki Finland.
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Abstract
At best, only trace amounts of galactose have been detected as constituents of rhodopsin as analysed by several laboratories. Nevertheless, the enzymatic galactosylation of rhodopsin proceeds readily in vitro, a process which can be catalysed by galactosyltransferases from several sources. Little information is available, however, concerning the properties of the in vitro reaction. We have examined characteristics of the latter process with the hope of shedding light on the capacity of the retina to carry out this reaction. Kinetic properties of the galactosyltransferases of bovine and embryonic chick retinas, bovine milk and rat liver-Golgi were examined using rhodopsin, opsin, N-acetylglucosamine and ovalbumin as exogenous acceptors. All of these studies demonstrated the very limited activity of the galactosyltransferases of the retina as compared to the milk and rat liver systems. The subcellular distribution of the galactosyltransferases of bovine retina was examined. The influence of compounds that might modulate the reaction was also examined. alpha-Lactalbumin, a modifier of the galactosyltransferase in milk, acted as a competitive inhibitor of the galactosylation of opsin. Analogs of vitamin A, shown to inhibit galactosyltransferases in other systems, did not have this effect on the galactosylation of opsin. Similarly, mixing experiments could not demonstrate the presence of endogenous material that inhibited the reaction in the retina. The conformation of the visual pigment was shown to influence the reaction. After bleaching by visible light, opsin was preferred over rhodopsin as an acceptor of galactose by the galactosyltransferases of bovine and embryonic chick retinas and by rat liver. This distinction was only minimally demonstrated by the milk enzyme. The galactosylation of ovalbumin was unaffected by conditions of light or dark by any of the enzymes. While the mode ratio of galactose to rhodopsin after catalysis by the milk enzyme was about 1.6, this ratio was only about 0.01 after reaction with the enzyme from bovine retina. The linkage of galactose in enzymatically galactosylated rhodopsin and opsin was beta(1-4).
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Affiliation(s)
- J M Ju
- Department of Ophthalmology, School of Medicine, Case Western Reserve University, Cleveland, OH 44106
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13
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Prasad AV, Ju JM, Plantner JJ, Kean EL. Reductively methylated, tritiated rhodopsin of high specific activity; a convenient sensitive tracer for use in the radioimmunoassay of rhodopsin. Curr Eye Res 1992; 11:267-73. [PMID: 1587149 DOI: 10.3109/02713689209001778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Bovine rhodopsin was subjected to reductive methylation in the dark using formaldehyde and high specific activity sodium borotritide. After purification by gel filtration and affinity chromatography on Concanavalin A-Sepharose, the product retained its immunoreactive properties. [3H]-Reductively methylated rhodopsin (specific activity, 32 Ci/mmole) was suitable for use in radioimmunoassays for rhodopsin, having many advantages over radioiodinated rhodopsin for this purpose. The site of the reductive methylation was shown to be the non-active site lysines with the production of tritiated N-epsilon-dimethyllysine and tritiated N-epsilon-methyllysine in a molar ratio of about 1.3:1, respectively. In terms of stability, ease of preparation, and specificity, tritiated, reductively methylated rhodopsin presents itself as a preferable ligand to radioiodinated rhodopsin in many applications, such as the radioimmunoassay.
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Affiliation(s)
- A V Prasad
- Department of Ophthalmology, Case Western Reserve University, Cleveland, OH
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14
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Ueng TH, Tsai JN, Ju JM, Ueng YF, Iwasaki M, Guengerich FP. Effects of acetone administration on cytochrome P-450-dependent monooxygenases in hamster liver, kidney, and lung. Arch Toxicol 1991; 65:45-51. [PMID: 2043050 DOI: 10.1007/bf01973502] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The effects of acetone on liver, kidney, and lung monooxygenases were studied using hamsters administered 8% acetone in drinking water. Binding of aniline to liver microsomes induced a type II difference spectrum, and the spectral binding was enhanced in hamsters pretreated with acetone. Administration of acetone caused significant increases of cytochrome P-450 and cytochrome b5 contents in liver microsomes. The increases of the hemeproteins were associated with induction of monooxygenase activities toward test substrates, aniline, N-nitrosodimethylamine, benzphetamine, benzo(a)pyrene, and 7-ethoxycoumarin. In the kidneys, acetone administration increased microsomal contents of the hemeprotein and monooxygenase activities toward aniline. N-nitrosodimethylamine, and 7-ethoxycoumarin, but not benzphetamine or benzo(a)pyrene. In the lungs, acetone pretreatment increased aniline hydroxylase activity without affecting the levels of N-nitrosodimethylamine demethylase, cytochromes P-450 and b5. In marked contrast to the inductive effects in the liver, acetone administration markedly decreased lung microsomal benzo(a)pyrene hydroxylase and 7-ethoxycoumarin O-deethylase activities. Gel electrophoresis of liver and kidney microsomes from control and acetone-treated hamsters revealed that acetone treatment enhanced the intensity of a protein band(s) in the cytochrome P-450 molecular weight region. Immunoblotting of the microsomal proteins showed that the protein band induced by acetone in hamster liver, kidney and lung was cross-reactive with antibody raised against ethanol-inducible human liver cytochrome P-450. These results demonstrate that acetone has the ability to uniformly induce a specific form of cytochrome P-450, designated as IIE1, and to cause differential changes of monooxygenase activities in the hamster tissues.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- T H Ueng
- Department of Biochemistry, College of Medicine, National Taiwan University, Taipei, ROC
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15
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Ueng TH, Ju JM, Tsai JN. Tissue specificity of induction of hamster monooxygenase activity by ethanol. Proc Natl Sci Counc Repub China B 1989; 13:1-8. [PMID: 2727183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The effects of ethanol on liver, kidney and intestine monooxygenases were studied using hamsters chronically fed with isocaloric control and ethanol-containing liquid diets. The inductive effects of ethanol on liver and kidney aniline hydroxylase activities began to approach plateau level after the animals were fed ethanol for two weeks. Intestinal aniline hydroxylation was refractory to ethanol induction. In control and ethanol-fed hamsters, CO-difference spectra of hepatic and extrahepatic microsomes differed in absorption maxima. Chronic alcohol consumption caused significant increases of cytochrome P-450 and cytochrome b5 contents of liver and kidney microsomes. The increases of the heme proteins were associated with the induction of aniline hydroxylase, N-nitrosodimethylamine demethylase and 7-ethoxycoumarin 0-deethylase activities. In contrast to the liver and kidney, intestinal microsomal cytochromes P-450 and b5 contents in ethanol-treated animals were lower than the controls. Ethanol pretreatment was without effect on intestinal monooxygenase activities toward the metabolism of aniline, N-nitrosodimethylamine, 7-ethoxycoumarin and benzo(a)pyrene. Gel electrophoresis of tissue microsomes from control and ethanol-treated hamsters revealed that ethanol treatment enhanced the intensity of the protein band(s) in the cytochrome P-450 molecular weight region in the liver and kidney, but not in the intestine. These results demonstrate that in hamsters the response of monooxygenase to ethanol may vary from tissue to tissue and it is difficult to make a generalization regarding the inducing property of ethanol. The differential effect on cytochrome P-450 may be an important factor in determining the interaction between ethanol and xenobiotic metabolism in animal tissues.
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Affiliation(s)
- T H Ueng
- Institute of Biochemistry, College of Medicine, National Taiwan University, Taipei, R.O.C
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