Designing a cross-linked redox network for a mediated enzyme-based electrode

2021 ◽  
Author(s):  
Motaher M. Hossain ◽  
Jannatul Morshed ◽  
Seiya Tsujimura
Keyword(s):  
Ethylene Glycol ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Glucose Dehydrogenase ◽  
Covalent Bonding ◽  
Diglycidyl Ether ◽  
Carbon Electrode ◽  
Poly Ethylene Glycol ◽  
One Pot ◽  
Poly Ethylene

A bio-conjugated redox network matrix based on glucose dehydrogenase, thionine (diamine-containing mediator), and poly(ethylene glycol) diglycidyl ether (crosslinker) is developed on a glassy carbon electrode through covalent bonding with one-pot...

scholarly journals Synthesis of Network Polymers by Means of Addition Reactions of Multifunctional-Amine and Poly(ethylene glycol) Diglycidyl Ether or Diacrylate Compounds

Polymers ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 2047
Author(s):  
Naofumi Naga ◽  
Mitsusuke Sato ◽  
Kensuke Mori ◽  
Hassan Nageh ◽  
Tamaki Nakano
Keyword(s):  
Ethylene Glycol ◽  
Room Temperature ◽  
Addition Reaction ◽  
Monomer Concentration ◽  
Diglycidyl Ether ◽  
Porous Polymers ◽  
Addition Reactions ◽  
Poly Ethylene Glycol ◽  
Network Polymers ◽  
Poly Ethylene

Addition reactions of multi-functional amine, polyethylene imine (PEI) or diethylenetriamine (DETA), and poly(ethylene glycol) diglycidyl ether (PEGDE) or poly(ethylene glycol) diacrylate (PEGDA), have been investigated to obtain network polymers in H2O, dimethyl sulfoxide (DMSO), and ethanol (EtOH). Ring opening addition reaction of the multi-functional amine and PEGDE in H2O at room temperature or in DMSO at 90 °C using triphenylphosphine as a catalyst yielded gels. Aza-Michael addition reaction of the multi-functional amine and PEGDA in DMSO or EtOH at room temperature also yielded corresponding gels. Compression test of the gels obtained with PEI showed higher Young’s modulus than those with DETA. The reactions of the multi-functional amine and low molecular weight PEGDA in EtOH under the specific conditions yielded porous polymers induced by phase separation during the network formation. The morphology of the porous polymers could be controlled by the reaction conditions, especially monomer concentration and feed ratio of the multi-functional amine to PEGDA of the reaction system. The porous structure was formed by connected spheres or a co-continuous monolithic structure. The porous polymers were unbreakable by compression, and their Young’s modulus increased with the increase in the monomer concentration of the reaction systems. The porous polymers absorbed various solvents derived from high affinity between the polyethylene glycol units in the network structure and the solvents.

An Efficient One-Pot Four-Component Hantzsch Reaction to Prepare Hydroquinolines Catalyzed by a Poly(ethylene glycol) Bridged Dicationic Basic Ionic Liquid under Solvent-Free Conditions

2013 ◽  
Vol 781-784 ◽  
pp. 247-252
Author(s):  
Jun Luo ◽  
Tan Tan Xing ◽  
Ying Lei Wang ◽  
Jian Feng Ju
Keyword(s):  
Ionic Liquid ◽  
Ethylene Glycol ◽  
Solvent Free ◽  
Hantzsch Reaction ◽  
Poly Ethylene Glycol ◽  
One Pot ◽  
Solvent Free Conditions ◽  
Basic Ionic Liquid ◽  
Activity Loss ◽  
Poly Ethylene

A piperidine-functionalized poly (ethylene glycol) bridged dicationic ionic liquid PEG800-DPIL(Cl) was synthesized and applied to catalyze the four-component Hantzsch reaction under solvent-free conditions and afford hydroquinolines with high to excellent yields. PEG800-DPIL(Cl) could be recovered by simple workup and recycled for at least eight times without obvious activity loss.

One-pot synthesis of cerium doped 3D ZnO nano-flowers modified on glassy carbon electrode as portable electro-chemical sensing platform for sensitive detection of methotrexate as an anticancer drug

2019 ◽  
Vol 256 ◽  
pp. 116119 ◽  
Author(s):  
Nezhat Jandaghi ◽  
Shohreh Jahani ◽  
Maryam Kazemipour ◽  
Mohammad Mehdi Foroughi ◽  
Amin Faridi Abbas abad ◽  
...  
Keyword(s):  
Glassy Carbon Electrode ◽  
Anticancer Drug ◽  
Glassy Carbon ◽  
Chemical Sensing ◽  
Sensitive Detection ◽  
Carbon Electrode ◽  
One Pot ◽  
One Pot Synthesis ◽  
Sensing Platform

Fluorescence Microscopy Study of Protein Adsorption at Modified Glassy Carbon Surfaces

2005 ◽  
Vol 58 (4) ◽  
pp. 275 ◽  
Author(s):  
Alison J. Downard ◽  
Sandra L. Jackson ◽  
Emelyn S. Q. Tan
Keyword(s):  
Fluorescence Microscopy ◽  
Ethylene Glycol ◽  
Protein Adsorption ◽  
Glassy Carbon ◽  
Direct Method ◽  
Primary Amines ◽  
Tetraethylene Glycol ◽  
Surface Films ◽  
Poly Ethylene Glycol ◽  
Poly Ethylene

Glassy carbon (GC) surfaces were modified with thin films by means of electrochemically assisted reduction of aryl diazonium salts and oxidation of primary amines. GC plates with modified and unmodified areas were exposed to solutions of fluorescently labelled bovine serum albumin (BSA-FITC). Fluorescence microscopy was found to be a simple and direct method for comparing adsorption of BSA-FITC between the different areas. Modification with methylbenzene, hexylbenzene, poly(ethylene glycol) benzene, and tetraethylene glycol diamine groups increases protein adsorption relative to unmodified GC. Hexylamine and the poly(ethylene glycol) diamine ED-2003 reduce protein adsorption. The results give insight into some factors controlling protein adsorption at these surface films.

Enzyme-based sensing of glucose using a glassy carbon electrode modified with a one-pot synthesized nanocomposite consisting of chitosan, reduced graphene oxide and gold nanoparticles

2015 ◽  
Vol 182 (9-10) ◽  
pp. 1783-1789 ◽  
Author(s):  
Yongkang Ye ◽  
Shun Ding ◽  
Yingwang Ye ◽  
Houchuan Xu ◽  
Xiaodong Cao ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Carbon Electrode ◽  
One Pot ◽  
Reduced Graphene
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