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Showing 1 to 20 of 28 for “"Phenyl Groups"”.
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Simulation study of carbon dioxide and methane permeation in hybrid inorganic-organic membrane
… framework model with and without inserted phenyl groups are used to define two membrane structures. We designate the two cases as PSPM and SPM respectively. To mimic the diffusion of gas across the membrane, a three-region system with a repulsive wall potential on the edge is employed. …
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ΗΛΕΚΤΡΟΔΙΕΠΙΦΑΝΕΙΑΚΗ ΣΥΜΠΕΡΙΦΟΡΑ ΤΕΤΡΑΥΠΟΚΑΤΕΣΤΗΜΕΝΩΝ ΦΩΣΦΩΝΙΟΚΑΤΙΟΝΤΩΝ ΣΤΗ ΔΙΑΦΑΣΙΚΗ ΠΕΡΙΟΧΗ ΥΔΡΑΡΓΥΡΟΥ/ΔΙΑΛΥΜΑΤΟΣ ΣΕ ΜΕΘΑΝΟΛΙΚΑ ΗΛΕΚΤΡΟΛΥΤΙΚΑ ΣΥΣΤΗΜΑΤΑ
… STRONG INTERACTIONS OF THE Π-ELECTRODES OF THE PHENYL-GROUPS AT POSITIVE AND SMALL NEGATIVE POLARIZATIONS SUGGEST THAT THE ABOVE CATIONS ARE ADSORBED WITH THEIR 3 PHENYL GROUPS ORIENTED TOWARDS THE METAL SURFACE. THE REGULAR SHAPE OF THE CAPACITANCE-VOLTAGE AND CAPACITANCE-TIME CURVES OF THESE …
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Advances in Phenyl-Modified Carbon Nitride: Towards Sustainable Environmental Applications
… challenges, recently researchers have introduced phenyl groups into the carbon nitride framework, which enhanced its optoelectronic properties and broadened its absorption in the visible-light spectrum. Adding phenyl groups extends the conjugated structure of g-C3N4, effectively reducing its …
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Charge transfer engineering in Phenyl-modified Carbon Nitride-based hybrid systems: from powder Photocatalysts to Thin films
… rather than solely modifying band structures. Phenyl-modified carbon nitride (PhCN) is employed as a molecularly engineered platform to enhance the electronic structure of carbon nitride. Phenyl groups extends the π-conjugated network, promoting charge delocalization and strengthening …
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Zirconium and hafnium organometallic compounds: Molecular geometry for five-, and seven-coordinate species
Alkylation of ZrCl$\sb4$ with phenyllithium affords the new d$\sp0$ complex $\rm\lbrack Li(Et\sb2O)\rbrack\sb2\lbrack ZrPh\sb6\rbrack ;$ the $\rm\lbrack ZrPh\sb6\sp{2-}$) anion adopts a trigonal prismatic geometry. Despite the presence of orbitals on the phenyl ligands that are of the right …
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Theory of phase transitions in liquid crystals and plastic crystals
… intermolecular dipole-dipole and intermolecular phenyl or benzene group interactions the properties of the phases with two dimensional hexagonal lattices are discussed. The smectic H phase results from ordering of the dipoles. We also get a smectic E phase with a herringbone structure resulting …
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MULTI-IONIC LITHIUM SALTS FOR USE IN SOLID POLYMER ELECTROLYTES FOR LITHIUM BATTERIES
… each with a SiO1.5 core and eight side groups. POSS-PEG8 has eight polyethylene glycol side chains that have low glass transition (Tg) and melt (Tm) temperatures and POSS-phenyl7(BF3Li)3 is a Janus-like POSS with hydrophobic phenyl groups and -Si-O-BF3Li ionic groups clustered on one …
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Sterically Crowded Copolymers Based on Functionalized Stilbenes
… with maleic anhydride or functionalized N-phenylmaleimides were prepared via a "protected" precursor polymer strategy. The polyelectrolyte precursors readily dissolved in organic solvents and were characterized by 1H NMR, SEC, TGA, and DSC. The polyelectrolytes were obtained via simple …
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Relevanz und Nutzung von Anionen-pi Wechselwirkungen
… is fixed above the center of the pentafluorophenyl group. Whereas in more flexible and less symmetric receptors the anion is pushed into the direction of one rim of the pi-system. Further studies investigated the influence of the anion geometry. While the geometry of the anion seems to play a …
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Synthesis of Functionalised Cobalt Sandwich Complexes for Application in Asymmetric Catalysis
… N,N-dimethylaminomethyl)cyclopentadienyl)(η4-tetraphenylcyclobutadiene)cobalt with sodium tetrachloropalladate and N-acetyl-D-phenylalanine gave planar chiral palladacycle di-μ-chloridebis[(η5-(Sp)-2-(N,N-dimethylaminomethyl)cyclopentadienyl,1-C,3′-N)(η4-tetraphenylcyclobutadiene)cobalt]dipalladium …
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Development of iron (III) tetra(meso-aryl)porphyrins and N-annulated perylene diimide tethered rhenium (I) bipyridine supramolecular dyads for carbon dioxide conversion catalysis
… platform by switching conventional phenyl-groups with smaller thiophene-based substituents. Although lower electrocatalytic CO2 conversion overpotentials were realized, these iron (III) tetra(meso-thienyl) porphyrins were subject to lower performance. Chapter Three investigates a …
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Characterizing Ultrafast Equilibrium Dynamics Using Third-Order Nonlinear Mid-Infrared Spectroscopies
… the wobbling-in-a-cone model. The addition of phenyl groups in the ligands acted to create more accessible local environmental configurations for the azide group. The binding configuration and intramolecular motion of the vibrational probe can affect the dynamics detected. The dynamics detected …
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Synthesis of pyrrolo[2,3-d]pyrimidines and pyrazino[2,3-d]pyrimidines and their biological activities
… In many cases, pteridines having 2-chlorophenyl groups at C6 and C7 exhibited cell growth inhibition for cancer/normal cells and bacterial cells. The majority of compounds had antiparasitic activity for T. b. brucei and four pyrrolo[2,3-d]pyrimidines had encouraging IC₅₀s (12.5 ~ 50 μM) …
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The Pd-catalyzed fluorination of (hetero)aryl bromides and triflates
… triflates. While previously described 2-aminobiphenyl-based sulfonate precatalysts were ineffective, readily activated [(L-Pd) 2COD] (COD = cyclooctadiene) complexes proved to be general precatalysts for these reactions. Further structural and reactivity studies of this new family of …
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Two approaches to the design and synthesis of bimetallic complexes
… with symmetric or asymmetric substituents on the phenyl groups were synthesized and fully characterized. Formamidines without bulky substituents exhibited fluxionality in solution, which was proved by a single set of signal in 1 H NMR. In contrast, two sets of signals were observed for …
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The stereochemistry of selected supramolecular complexes of cucurbiturils and the effect of homogeneous equilibria and electron transfer of the guest
… their shape, size and the size of the cavity, 4-phenylpyrylium cation (Pylm) was chosen as a guest and both CB[7] and CB[8] as hosts. The size and shape of the guest was modified by 2,6-substitution (Me, iPr, Ph, t-Bu). In water, 2,6-disubsituted-Pylm form dimers, but they enter as such only in …
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