Copper (II) ions Supported on Functionalized Graphene Oxide: An Organometallic Nanocatalyst for Oxidative Amination of Azoles via C‒H/ C-N Bond Activation

2020 ◽  
Author(s):  
Masoumeh Behzadi ◽  
Mohammad Mahmoodi Hashemi ◽  
Mostafa Roknizadeh ◽  
Shahrokh Nasiri ◽  
Ahmad Ramazani Sadaatabadi
Keyword(s):  
Graphene Oxide ◽  
Bond Activation ◽  
Functionalized Graphene ◽  
Aminobenzoic Acid ◽  
Oxidative Amination ◽  
Functionalized Graphene Oxide ◽  
Chemically Modified

Graphene oxide (GO) was chemically modified with para-aminobenzoic acid (PABA) to immobilize copper (II) ions to its surface and used as a nanocatalyst for the oxidative C (sp2)‒H bond amination...

Aminobenzoic acid functionalized graphene oxide as environment-friendly corrosion inhibitors for Q235 steel in HCl solution: experimental and DFT studies

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Baoguang Ma ◽  
Cheng Chen ◽  
Xiaojun Xie ◽  
Yanhui Chen ◽  
Qiuyu Zhang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Corrosion Inhibitors ◽  
Chemical Calculation ◽  
Functionalized Graphene ◽  
Aminobenzoic Acid ◽  
Environment Friendly ◽  
Functionalized Graphene Oxide ◽  
Content Type ◽  
Q235 Steel ◽  
Environmental Friendly

Purpose The purpose of this study is to provide effective and environmental-friendly corrosion inhibitors derived from graphene oxide for Q235 steel. Design/methodology/approach Nontoxic and environment-friendly 4-aminobenzoic acid was used to functionalize graphene oxide via amidation and diazotization. The obtained amidation 4-aminobenzoic acid functionalized graphene oxide (PAGO) and diazotization 4-aminobenzoic acid functionalized graphene oxide (PDGO) were characterized by FTIR, Raman and TEM, while the inhibition efficiencies were analyzed by electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization (PDP). Furthermore, theoretical inhibition efficiencies were investigated by density functional theory (DFT) approach. Findings At a concentration of 40 ppm, the maximum inhibition efficiency of PAGO and PDGO were 97.90% and 96.72% in EIS measurement, respectively, which were in accordance with PDP data. Moreover, experimental results were supported by DFT-based quantum chemical calculation. Originality/value Environmental-friendly PAGO and PDGO were synthesized successfully. The synthetic inhibitors exhibited excellent inhibition efficiencies in EIS and PDP measurements. Furthermore, a computational study using DFT supported the trend that PAGO was better inhibitor than PDGO.

Polymer Functionalized Graphene Oxide: A Versatile Nanoplatform for Drug/Gene Delivery

2015 ◽  
Vol 19 (18) ◽  
pp. 1828-1837 ◽  
Author(s):  
George V. Theodosopoulos ◽  
Panayiotis Bilalis ◽  
Georgios Sakellariou
Keyword(s):  
Graphene Oxide ◽  
Gene Delivery ◽  
Functionalized Graphene ◽  
Functionalized Graphene Oxide

A covalently cross-linked reduced functionalized graphene oxide/polyurethane composite based on Diels–Alder chemistry and its potential application in healable flexible electronics

2017 ◽  
Vol 5 (1) ◽  
pp. 220-228 ◽  
Author(s):  
Jinhui Li ◽  
Guoping Zhang ◽  
Rong Sun ◽  
Ching-Ping Wong
Keyword(s):  
Graphene Oxide ◽  
Flexible Electronics ◽  
Potential Application ◽  
High Efficiency ◽  
Diels Alder ◽  
Functionalized Graphene ◽  
Functionalized Graphene Oxide ◽  
Polyurethane Composite

A novel composite of reduced functionalized graphene oxide/polyurethane based on Diels–Alder chemistry was developed which could be healed microwaves with high efficiency and applied in healable flexible electronics.

Layer by layer assembled functionalized graphene oxide-based polymer brushes for superlubricity on steel-steel tribocontact

Soft Matter ◽  
2021 ◽  
Author(s):  
Suprakash Samanta ◽  
Rashmi Ranjan Sahoo
Keyword(s):  
Graphene Oxide ◽  
Nucleophilic Addition ◽  
Polymer Brushes ◽  
Addition Reaction ◽  
Layer By Layer ◽  
Functionalized Graphene ◽  
Covalent Functionalization ◽  
Functionalized Graphene Oxide ◽  
Nucleophilic Addition Reaction ◽  
Branched Polyethylenimine

Present study demonstrates a simple and multistep approach for the preparation of covalent functionalization of chemically prepared graphene oxide (GO) by branched polyethylenimine (PEI) through nucleophilic addition reaction to prepare...

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