Author
Nikoletta Sofikiti
Bio: Nikoletta Sofikiti is an academic researcher from University of Crete. The author has contributed to research in topics: Aryl & Photooxygenation. The author has an hindex of 9, co-authored 15 publications receiving 330 citations.
Topics: Aryl, Photooxygenation, Singlet oxygen, Ene reaction, Triphenylphosphine
Papers
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TL;DR: A condensed overview of the contribution of certain relatively new semiconductor substrates in the development of chemical and biochemical field effect transistors and their future prospects for their applications in the sensor area are described.
130 citations
TL;DR: Both oxidative stability and radical scavenging activity of EVOO samples were correlated to their content in polyphenols and tocopherols.
84 citations
TL;DR: A singlet oxygen-orchestrated cascade sequence in which a double photooxygenation of a 1,2-difuryl alkene precursor precedes dehydration and spirocyclization to furnish the intact prunolide core.
36 citations
TL;DR: In this article, it is shown that these nanostructured sensors respond to anions as their corresponding compact crystals, but with a much lower sensitivity (chloride anion detection) and even though both kinds of nanocolumns are more vulnerable to HCl etching compared to their flat counterparts, they exhibit quite high pH sensitivity.
18 citations
TL;DR: In this paper, the entrapment of urease enzyme within the cavities of nanocolumnar GaN and InN wurtzite semiconductor substrates is described.
Abstract: In this work, the development of potentiometric urea biosensors through the entrapment of urease enzyme within the cavities of nanocolumnar GaN and InN wurtzite semiconductor substrates, is being described. The biosensing capabilities of these materials are compared with biosensors based on the corresponding flat surfaces, in order to check the increased sensitivity and enzyme stabilization properties expected from the nanocolumns. The obtained results proved that the electrochemically active nanocolumns serve both as highly sensitive transducer, as well as stabilizing nanoenvironment within which urease retains its catalytic activity for a prolonged period of time.
13 citations
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TL;DR: Photochemical Electron-Transfer Reactions with a Catalytic Sensitizer 1068 6.1.1 Photochemical Extrusion of Small Molecules 1067 6.2.2 Photochemical Rearrangings 1061 4.4.3.
Abstract: 2.3. [4 + 4] Cycloadditions 1058 2.4. Photocycloadditions of Aromatic Compounds 1058 2.4.1. Benzene Derivatives 1058 2.4.2. Condensed Aromatic Compounds 1060 3. Photochemical Rearrangements 1061 4. Cyclizations 1064 4.1. Pericyclizations 1064 4.2. Norrish−Yang Reaction 1066 5. Photochemical Extrusion of Small Molecules 1067 6. Photochemical Electron Transfer 1068 6.1. Photochemical Electron-Transfer Reactions with a Catalytic Sensitizer 1068
1,046 citations
TL;DR: The optimized and highly efficient ZnO/CeO2 (90:10) nanocomposite exhibited enhanced photocatalytic degradation performance for the degradation of methyl orange, methylene blue, and phenol as well as industrial textile effluent compared to ZNO, CeO2 and the other investigated nanocomPOSites.
Abstract: In this study, pure ZnO, CeO2 and ZnO/CeO2 nanocomposites were synthesized using a thermal decomposition method and subsequently characterized using different standard techniques. High-resolution X-ray photoelectron spectroscopy measurements confirmed the oxidation states and presence of Zn(2+), Ce(4+), Ce(3+) and different bonded oxygen species in the nanocomposites. The prepared pure ZnO and CeO2 as well as the ZnO/CeO2 nanocomposites with various proportions of ZnO and CeO2 were tested for photocatalytic degradation of methyl orange, methylene blue and phenol under visible-light irradiation. The optimized and highly efficient ZnO/CeO2 (90:10) nanocomposite exhibited enhanced photocatalytic degradation performance for the degradation of methyl orange, methylene blue, and phenol as well as industrial textile effluent compared to ZnO, CeO2 and the other investigated nanocomposites. Moreover, the recycling results demonstrate that the ZnO/CeO2 (90:10) nanocomposite exhibited good stability and long-term durability. Furthermore, the prepared ZnO/CeO2 nanocomposites were used for the electrochemical detection of uric acid and ascorbic acid. The ZnO/CeO2 (90:10) nanocomposite also demonstrated the best detection, sensitivity and performance among the investigated materials in this application. These findings suggest that the synthesized ZnO/CeO2 (90:10) nanocomposite could be effectively used in various applications.
502 citations
TL;DR: This Review is intended to draw a logical link between flow and batch reactions-a combination that leads to the current state of (1)O2 in synthesis.
Abstract: This Review describes singlet oxygen (1O2) in the organic synthesis of targets on possible 1O2 biosynthetic routes. The visible-light sensitized production of 1O2 is not only useful for synthesis; it is extremely common in nature. This Review is intended to draw a logical link between flow and batch reactions—a combination that leads to the current state of 1O2 in synthesis.
442 citations
TL;DR: In this paper, a facile and inexpensive route has been developed to synthesize a ternary ZnO/Ag/Mn2O3 nanocomposite having nanorod structures based on the thermal decomposition method.
Abstract: A facile and inexpensive route has been developed to synthesize a ternary ZnO/Ag/Mn2O3 nanocomposite having nanorod structures based on the thermal decomposition method. The as-synthesized ternary ZnO/Ag/Mn2O3 nanocomposite was characterized and used for visible light-induced photocatalytic, sensing and antimicrobial studies. The ternary ZnO/Ag/Mn2O3 nanocomposite exhibited excellent and enhanced visible light-induced photocatalytic degradation of industrial textile effluent (real sample analysis) compared to pure ZnO. Sensing studies showed that the ternary ZnO/Ag/Mn2O3 nanocomposite exhibited outstanding and improved detection of uric acid (UA) and ascorbic acid (AA). It also showed effective and efficient bactericidal activities against Staphylococcus aureus and Escherichia coli. These results suggest that the small size, high surface area and synergistic effect among ZnO, AgNPs and Mn2O3 induced visible light photocatalytic activity by decreasing the recombination of photogenerated electrons and holes, and extending the response of pure ZnO to visible light, enhanced sensing of UA and AA and antimicrobial activity. Overall, the ternary ZnO/Ag/Mn2O3 nanocomposite is a valuable material that can be used for a range of applications, such as visible light-induced photocatalysis, sensing and antimicrobial activity. Therefore, ternary nanocomposites could have important applications in environmental science, sensing, and biological fields.
401 citations
394 citations