Results 71 to 80 of about 8,344 (184)

Quinoid to benzenoid transition-driven glutathione sensing: Dual-emission carbon dots and smartphone-based ratiometric fluorescence analysis

Talanta Open
This study presents a novel and sensitive method for the determination of glutathione (GSH), a crucial antioxidant and cellular protectant, using dual blue/orange-emitting carbon dots (BOCDs) and phenolphthalein (PHP).
Al-Montaser Bellah H. Ali, Ashraf M. Mahmoud, Yousef A. Bin Jardan, Aya M. Mostafa, James Barker, Mohamed M. El-Wekil   +5 more
doaj   +1 more source

Does Koopmans’ Paradigm for 1-Electron Oxidation Always Hold? Breakdown of IP/E\u3csub\u3eox\u3c/sub\u3e Relationship for \u3cem\u3ep\u3c/em\u3e-Hydroquinone Ethers and the Role of Methoxy Group Rotation [PDF]

, 2016
Koopmans’ paradigm states that electron loss occurs from HOMO, thus forming the basis for the observed linear relationships between HOMO/IP, HOMO/Eox, and IP/Eox.
Boddeda, Anitha, Lindeman, Sergey V., Rathore, Rajendra, Talipov, Marat R.   +3 more
core   +1 more source

Investigation of the Optical and Morphological Properties of PS/POMA Blends Hybridized With Erbium Oxide (Er2O3)

Journal of Applied Polymer Science, Volume 143, Issue 16, April 20, 2026.
ABSTRACT Polymeric blends (PB) represent a rapid and cost‐effective strategy for the development of materials with tailored properties. In this study, blends of polystyrene (PS) and poly(o‐methoxyaniline) (POMA) containing 7.5 wt/wt% of POMA were prepared and hybridized with erbium oxide (Er2O3) at concentrations of 0.5, 1.0, and 3.0 wt/wt%.
Ana Carolina Pires Martins, Patrick Brito, Letícia Nunes Coelho, Djalmir Nestor Messias, Nizamara Simenremis Pereira   +4 more
wiley   +1 more source

Does Aromaticity Drive Metal Cation Binding to Nanographenes? Insights Into Regioselectivity and Cation‐π$$ \pi $$ Bonding

Journal of Computational Chemistry, Volume 47, Issue 10, 15 April 2026.
Aromaticity of a ring by itself does not explain the binding energies of alkali and alkaline earth metal cations with nanographenes, but when combined with the Fukui function, it does. ABSTRACT Nanographenes, a subclass of polycyclic aromatic hydrocarbons (PAHs), have attracted significant interest due to their unique electronic properties and broad ...
Omkar Charapale, Sergio Posada‐Pérez, Albert Poater, Miquel Solà   +3 more
wiley   +1 more source

Silver(I) Complexation of (Poly)aromatic Ligands. Structural Criteria for Depth Penetration into \u3cem\u3ecis\u3c/em\u3e-Stilbenoid Cavities [PDF]

, 2000
Silver(I) complexes with aromatic donors are thoroughly analyzed (with aid of the Cambridge Crystallographic Database) to identify the basic structural factors inherent to the bonding of an arene ligand.
Kochi, Jay K., Lindeman, Sergey V., Rathore, Rajendra   +2 more
core   +1 more source

Intramolecular (Electron) Delocalization Between Aromatic Donors and their Tethered Cation–Radicals. Application of Electrochemical and Structural Probes [PDF]

, 2001
To study the mechanism of electronic transduction along (poly)phenylene chains, a series of aromatic donors with general formula D–B–D has been synthesized [where D = 2,5-dimethoxy-4-methylphenyl donor and B = (poly)phenylene bridge]; and the ...
Kochi, Jay K., Lindeman, Sergey V., Rathore, Rajendra, Sun, Duoli   +3 more
core   +1 more source

Detection of Bioactive Compounds Produced by in Vitro Culture of Jojoba Plants (Simmondsia chinesi (Link) Schn.) Using GCMS and FTIR

Maǧallaẗ al-baṣraẗ al-ʻulūm al-zirāʻiyyaẗ
The jojoba tree is economically important plant due to its high contains of oil and its various industrial, commercial and medical applications. A practical experiment was carried out to determine the optimal combination of plant growth regulators ...
Aman H. A. Althuluth, Aqeel A. Suhaim , Murtadha S. Auda   +2 more
doaj   +2 more sources

Staggered Benzenoid Pairs as Potential Spin Coupling Systems

, 2013
Staggered benzenoids are a novel class of benzenoid systems with a potential to manifest intermolecular spin coupling, as in the prototypical case of the phenalenyl radicals. To define this new class, benzenoids are represented by pi-network graphs, with vertices coloured or uncoloured such that each edge is between a coloured and an uncoloured vertex.
Babić, Darko, Klein, Douglas J., Smith, David M.   +2 more
openaire   +3 more sources

Some Topological Properties of Benzenoid Systems

Croatica Chemica Acta, 1974
In recent years conjugated molecules have been intensely studied by means of graph theory1 and a number of their chemical and physical properties could be described and/or predicted. The aim of the present note is to analyze a special class of molecular graphs2 which are of doubtless importance for chemistry since they represent benzenoid hydrocarbons.
openaire   +2 more sources

Randić Index of Benzenoid Systems and Phenylenes

Croatica Chemica Acta, 2001
A new parameter, related to and easily determined from the structure of a benzenoid system and that of a phenylene - the number of inlets (r) - is introduced. The connectivity (Randić) index of both benzenoid systems and phenylenes is then shown to depend solely on the number of vertices and on r.
Rada, Juan, Araujo, Oswaldo, Gutman, Ivan   +2 more
openaire   +1 more source