1
|
Zheng Z, Hu Z, Lou Y, Lou Y, Yang C, Younus HA, Zhang Y, Wang X. Porosity vs. Carbon Shell Number: Key Factor Actually Affecting the Performance of Multi-shelled Hollow Carbon Nanospheres in Li-S Batteries. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.116980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
2
|
Liu F, Li L, Zhang B, Fan W, Zhang R, Liu G, Liu X. A novel electrochemical sensor based on microporous polymeric nanospheres for measuring peroxynitrite anion released by living cells and studying the synergistic effect of antioxidants. Analyst 2020; 144:6905-6913. [PMID: 31646305 DOI: 10.1039/c9an01693g] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Peroxynitrite anion (ONOO-) is a crucial reactive nitrogen species (RNS), which has aroused immense research interest in the biological and biomedical fields because aberrant expression levels of ONOO- are related to many diseases. In this work, a novel electrochemical sensor is described for the detection of peroxynitrite anion (ONOO-) released from living cells. It is constructed with a glassy carbon electrode (GCE) decorated with a nanocomposite (CTS-MPNS) synthesized from chitosan (CTS) functionalized microporous polymeric nanospheres (MPNS). The prepared CTS-MPNS/GCE sensor shows a supernormal manifestation in measuring ONOO- in a wide range of concentrations from 3.83 nM to 0.104 mM, and the detection limit is as low as 1.28 nM (S/N = 3), which makes it possible to detect trace amounts of ONOO- released from U87 cells. Significantly, the synergistic effect of different antioxidants on scavenging ONOO- in biological systems is further studied by an electrochemical method for the first time, which provides an efficient strategy for protecting cells against oxidative stress. The developed platform and the efficient strategy may pave the way for their future applications in the field of biomedicine and the treatment of cancer diseases.
Collapse
Affiliation(s)
- Fuxin Liu
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northeast Normal University, Lanzhou, 730070, China.
| | | | | | | | | | | | | |
Collapse
|
3
|
Hasanov HH, Ivanov IK, Christov VC. Bifunctionalized allenes. Part XXII. Coinage metal-catalyzed cycloisomerization of phosphorylated 3-(α- or β-hydroxyalkyl)allenes to 2-phosphoryl-2,5-dihydrofurans or 2-phosphoryl-5,6-dihydro-2H-pyrans. PHOSPHORUS SULFUR 2018. [DOI: 10.1080/10426507.2018.1515947] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Hasan H. Hasanov
- Department of Chemistry, Faculty of Natural Sciences, Konstantin Preslavsky University of Shumen, Shumen, Bulgaria
| | - Ivaylo K. Ivanov
- Department of Chemistry, Faculty of Natural Sciences, Konstantin Preslavsky University of Shumen, Shumen, Bulgaria
| | - Valerij Ch. Christov
- Department of Chemistry, Faculty of Natural Sciences, Konstantin Preslavsky University of Shumen, Shumen, Bulgaria
| |
Collapse
|
4
|
Bin DS, Chi ZX, Li Y, Zhang K, Yang X, Sun YG, Piao JY, Cao AM, Wan LJ. Controlling the Compositional Chemistry in Single Nanoparticles for Functional Hollow Carbon Nanospheres. J Am Chem Soc 2017; 139:13492-13498. [DOI: 10.1021/jacs.7b07027] [Citation(s) in RCA: 211] [Impact Index Per Article: 30.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- De-Shan Bin
- CAS
Key Laboratory of Molecular Nanostructure and Nanotechnology, and
CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Zi-Xiang Chi
- CAS
Key Laboratory of Molecular Nanostructure and Nanotechnology, and
CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, People’s Republic of China
| | - Yutao Li
- Materials
Science and Engineering Program and Texas Materials Institute, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Ke Zhang
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
- State
Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China
| | - Xinzheng Yang
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
- State
Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China
| | - Yong-Gang Sun
- CAS
Key Laboratory of Molecular Nanostructure and Nanotechnology, and
CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Jun-Yu Piao
- CAS
Key Laboratory of Molecular Nanostructure and Nanotechnology, and
CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - An-Min Cao
- CAS
Key Laboratory of Molecular Nanostructure and Nanotechnology, and
CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Li-Jun Wan
- CAS
Key Laboratory of Molecular Nanostructure and Nanotechnology, and
CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| |
Collapse
|
5
|
Hasanov HH, Ivanov IK, Christov VC. Bifunctionalized allenes, Part XIX: Synthesis, electrophilic cyclization/addition, and coinage metal-catalyzed cycloisomerization of phosphorylated 3-(β-hydroxy)allenes. HETEROATOM CHEMISTRY 2016. [DOI: 10.1002/hc.21357] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Hasan H. Hasanov
- Department of Organic Chemistry and Technology; Faculty of Natural Sciences; Konstantin Preslavsky University of Shumen; Shumen Bulgaria
| | - Ivaylo K. Ivanov
- Department of Organic Chemistry and Technology; Faculty of Natural Sciences; Konstantin Preslavsky University of Shumen; Shumen Bulgaria
| | - Valerij Ch. Christov
- Department of Organic Chemistry and Technology; Faculty of Natural Sciences; Konstantin Preslavsky University of Shumen; Shumen Bulgaria
| |
Collapse
|
6
|
Bifunctionalized Allenes. Part XVI. Synthesis of 3-Phosphoryl-2,5-dihydrofurans by Coinage Metal-Catalyzed Cyclo-isomerization of Phosphorylated α-Hydroxyallenes. Molecules 2015; 20:7263-75. [PMID: 25905604 PMCID: PMC6272136 DOI: 10.3390/molecules20047263] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2015] [Revised: 04/15/2015] [Accepted: 04/17/2015] [Indexed: 11/17/2022] Open
Abstract
Phosphorylated α-hydroxyallenes 1 and 2 were smoothly converted into the corresponding 2,5-dihydrofurans 3 and 4 in an 5-endo-trig cycloisomerization reaction by using 5 mol % of coinage metal salts as catalyst. Experimental conditions such as the type of the solvent, the reaction temperature, the mol % and the type of the catalyst were optimized. This mild and efficient cyclization method can be applied to dimethyl 1-hydroxyalkyl-alka-1,2-dienephosphonates 1 and 2-diphenylphosphinoyl-2,3-dien-1-ols 2a–c and 3-diphenylphosphinoyl-3,4-dien-2-ols 2d,e, furnishing 3-phosphorylated 2,5-dihydrofurans 3 and 4 in very good yields.
Collapse
|
7
|
Ismailov IE, Ivanov IK, Christov VC. Bifunctionalized allenes. Part XV. Synthesis of 2,5-dihydro-1,2-oxaphospholes by electrophilic cyclization reaction of phosphorylated α-hydroxyallenes. Molecules 2014; 19:11056-76. [PMID: 25076142 PMCID: PMC6270811 DOI: 10.3390/molecules190811056] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2014] [Revised: 07/21/2014] [Accepted: 07/23/2014] [Indexed: 11/17/2022] Open
Abstract
This paper discusses a reaction of phosphorylated α-hydroxyallenes with protected or unprotected hydroxy groups involving 5-endo-trig cyclizations. Various electrophilic reagents such as sulfuryl chloride, bromine, benzenesulfenyl and benzeneselenenyl chlorides have been applied. The paper describes the reaction of 1-hydroxyalkyl-1,2-dienephosphonates with electrophiles that produces 2-methoxy-2-oxo-2,5-dihydro-1,2-oxaphospholes due to the participation of the phosphonate neighbouring group in the cyclization. On the other hand, (1E)-alk-1-en-1-yl phosphine oxides were prepared as mixtures with 2,5-dihydro-1,2-oxaphosphol-2-ium halides in a ratio of about 1:2 by chemo-, regio, and stereoselective electrophilic addition to the C(2)-C(3)-double bond in the allene moiety and subsequent concurrent attack of the external (halide anion) and internal (phosphine oxide group) nucleophiles. The paper proposes a possible mechanism that involves cyclization and additional reactions of the phosphorylated α-hydroxyallenes.
Collapse
Affiliation(s)
- Ismail E Ismailov
- Department of Organic Chemistry & Technology, Faculty of Natural Sciences, Konstantin Preslavsky University of Shumen, 115, Universitetska str., BG-9712 Shumen, Bulgaria.
| | - Ivaylo K Ivanov
- Department of Organic Chemistry & Technology, Faculty of Natural Sciences, Konstantin Preslavsky University of Shumen, 115, Universitetska str., BG-9712 Shumen, Bulgaria.
| | - Valerij Ch Christov
- Department of Organic Chemistry & Technology, Faculty of Natural Sciences, Konstantin Preslavsky University of Shumen, 115, Universitetska str., BG-9712 Shumen, Bulgaria.
| |
Collapse
|