scholarly journals Azides and Porphyrinoids: Synthetic Approaches and Applications. Part 2—Azides, Phthalocyanines, Subphthalocyanines and Porphyrazines

Molecules ◽  
2020 ◽  
Vol 25 (7) ◽  
pp. 1745
Author(s):  
Ana R. L. Araújo ◽  
Augusto C. Tomé ◽  
Carla I. M. Santos ◽  
Maria A. F. Faustino ◽  
Maria G. P. M. S. Neves ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Quantum Dots ◽  
Gold Nanoparticles ◽  
Graphene Oxide ◽  
Silica Nanoparticles ◽  
Organic Azides ◽  
Significant Potential ◽  
Recent Developments ◽  
Potential Applications ◽  
Synthetic Approaches

The reaction between organic azides and alkyne derivatives via the Cu(I)-catalyzed azide–alkyne cycloaddition (CuAAC) is an efficient strategy to combine phthalocyanines and analogues with different materials. As examples of such materials, it can be considered the following ones: graphene oxide, carbon nanotubes, silica nanoparticles, gold nanoparticles, and quantum dots. This approach is also being relevant to conjugate phthalocyanines with carbohydrates and to obtain new sophisticated molecules; in such way, new systems with significant potential applications become available. This review highlights recent developments on the synthesis of phthalocyanine, subphthalocyanine, and porphyrazine derivatives where CuAAC reactions are the key synthetic step.

Conductivity modulation of carbon nanotubes through hybridization with quantum dots and gold nanoparticles

2013 ◽  
Vol 64 (2) ◽  
pp. 20401 ◽  
Author(s):  
Suresh Kumar ◽  
Mridula Mittal ◽  
Inderpreet Kaur ◽  
Keya Dharamvir ◽  
Banshi Dhar Pant ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Quantum Dots ◽  
Gold Nanoparticles

Nanocomposite Polymer Adhesives: A Critical Review

2019 ◽  
Vol 7 (2) ◽  
pp. 93-168 ◽  
Author(s):  
S. Kenig ◽  
H. Dodiuk ◽  
G. Otorgust ◽  
S. Gomid
Keyword(s):  
Carbon Nanotubes ◽  
Critical Review ◽  
Fracture Mechanisms ◽  
Polyhedral Oligomeric Silsesquioxanes ◽  
Nanocomposite Polymer ◽  
Recent Developments ◽  
Potential Applications ◽  
Graphene Nanoparticles ◽  
Nanoscale Range ◽  
Adhesive Materials

With recent developments in nanotechnology, nanocomposite adhesives offer numerous advantages compared to conventional adhesive materials. Moreover, with the emergence of commercial nanomaterials such as: Nanoclays (NCs), Carbon nanotubes (CNTs), Nanosilica (NS), Polyhedral oligomeric silsesquioxanes (POSS), Tungsten disulfide (WS2) Fullerenes and Nanotubes, and Graphene nanoparticles (GNPs), new potential routes have been opened to tailor adhesives in the nanoscale range. This update will review and analyze the unique fracture mechanisms and the resultant properties of various nanocomposite adhesives based on epoxies, polyurethanes, silicones, polyimides and acrylics containing: NCs, CNTs, NS, POSS, WS2 and GNPs and their current and potential applications.

scholarly journals Simultaneous Detection of Dihydroxybenzene Isomers Using Electrochemically Reduced Graphene Oxide-Carboxylated Carbon Nanotubes/Gold Nanoparticles Nanocomposite

Biosensors ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 321
Author(s):  
Angélica Domínguez-Aragón ◽  
Rocio B. Dominguez ◽  
Erasto Armando Zaragoza-Contreras
Keyword(s):  
Carbon Nanotubes ◽  
Gold Nanoparticles ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Tap Water ◽  
Simultaneous Detection ◽  
3D Network ◽  
Reduced Graphene ◽  
Electrochemically Reduced Graphene Oxide ◽  
Carboxylated Carbon Nanotubes

An electrochemical sensor based on electrochemically reduced graphene oxide (ErGO), carboxylated carbon nanotubes (cMWCNT), and gold nanoparticles (AuNPs) (GCE/ErGO-cMWCNT/AuNPs) was developed for the simultaneous detection of dihidroxybenzen isomers (DHB) hydroquinone (HQ), catechol (CC), and resorcinol (RS) using differential pulse voltammetry (DPV). The fabrication and optimization of the system were evaluated with Raman Spectroscopy, SEM, cyclic voltammetry, and DPV. Under optimized conditions, the GCE/ErGO-cMWCNT/AuNPs sensor exhibited a linear concentration range of 1.2–170 μM for HQ and CC, and 2.4–400 μM for RS with a detection limit of 0.39 μM, 0.54 μM, and 0.61 μM, respectively. When evaluated in tap water and skin-lightening cream, DHB multianalyte detection showed an average recovery rate of 107.11% and 102.56%, respectively. The performance was attributed to the synergistic effects of the 3D network formed by the strong π–π stacking interaction between ErGO and cMWCNT, combined with the active catalytic sites of AuNPs. Additionally, the cMWCNT provided improved electrocatalytic properties associated with the carboxyl groups that facilitate the adsorption of the DHB and the greater amount of active edge planes. The proposed GCE/ErGO-cMWCNT/AuNPs sensor showed a great potential for the simultaneous, precise, and easy-to-handle detection of DHB in complex samples with high sensitivity.

Fabrication of graphene oxide decorated with nitrogen-doped graphene quantum dots and its enhanced electrochemiluminescence for ultrasensitive detection of pentachlorophenol

The Analyst ◽  
2015 ◽  
Vol 140 (4) ◽  
pp. 1253-1259 ◽  
Author(s):  
Xiaojiao Du ◽  
Ding Jiang ◽  
Qian Liu ◽  
Gangbing Zhu ◽  
Hanping Mao ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Graphene Oxide ◽  
Electrocatalytic Activity ◽  
Graphene Quantum Dots ◽  
Ultrasensitive Detection ◽  
Nitrogen Doped ◽  
New Class ◽  
Potential Applications ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene

Nitrogen-doped graphene quantum dots, as a new class of quantum dots, have potential applications in fuel cells and optoelectronics fields due to their electrocatalytic activity, tunable luminescence and biocompatibility.

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