نتایج جستجو برای: ferrocene carboxaldehyd
تعداد نتایج: 1909 فیلتر نتایج به سال:
Ferrocene is an organometallic molecular sandwich complex with an iron atom coordinated between two cyclopentadienyl rings. The reorientation of these rings in a process of rotational jump diffusion between multiple equilibrium sites on a circle is investigated using quasielastic neutron time of flight and backscattering spectroscopy experiments. Existing results on the ring rotation in bulk, c...
Ferrocene and its derivatives are very useful in the fields of chemistry, biomedicine materials. Herein, a ferrocene derivative was synthesized one step from benzotriazol-1-yl-oxytripyrrolidino-phosphonium hexafluorophosphate ferrocenecarboxylic acid. Its accurate structure determined by 1H 13C NMR further confirmed X-ray diffraction analysis corresponding single crystal.
A chemosensor compound (1) consisting of a central ferrocene with two butylaminomethyl arms showed unexpected facile electrochemical oxidation of the secondary amines in proximity to the ferrocene, which was utilized for electrochemical discrimination of phthalic acid selectively over two other isomers, isophthalic acid and terephthalic acid.
Electrostatically linked ferrocene junctions were assembled and their conductance was investigated on the level of individual molecules by means of an electrochemical mechanical break junction. Conductance histograms of repeatedly formed molecular junctions showed peaks at multiples of 3.4 × 10(-5) G(0), which is one order of magnitude smaller than the conductance reported for covalently linked...
Two ethylene linked binuclear mixed ferrocene/ruthenium complexes were biologically investigated in comparison to structurally related mononuclear ferrocene or ruthenium species with styryl substituents or ligands. Results indicated that the electron distribution (but not the redox potential), cellular uptake and (to some minor extent) anti-estrogenic effects were the key contributors to antipr...
The thermodynamic interactions in poly(styrene-block-ferrocenyldimethylsilane) and poly(isoprene-block-ferrocenyldimethylsilane) copolymers were systematically tuned by oxidation of the ferrocene moieties with silver nitrate. Small-angle X-ray scattering experiments show that oxidizing 8% of the ferrocene moieties lowers the order-disorder transition temperature of the copolymers by as much as ...
Glassy carbon electrodes (GCE) modified by a bilayer of phospholipids (BLM) have been used to monitor the passage redox probes and ferrocene-labelled peptides across lipid membranes an anionic (DOPG) or zwitterionic (globally neutral DPhPC) phospholipid. The gel-phase DPhPC showed strong association with like ferrocene methanol but expelled positively negatively charged species, as observed on ...
A combined strategy utilizing experimental (infrared, nuclear magnetic resonance, circular dichroism, X-ray) and computational (time-dependent density functional theory) techniques is illustrated on tripeptides to investigate their chiroptical properties. Eight stereoisomers of monosubstituted ferrocene, Boc-Pro-Pro-Ala-NHFc, have been prepared conformationally characterized in depth reach some...
Ferrocene has been utilized as an organometallic scaffold for more than 25 years, serving a central reverse-turn unit with the inter-ring spacing of about 3.3 Å. A variety ferrocene-peptide conjugates have designed to construct protein secondary structures and demonstrate chirality organization via hydrogen bonding. In general, helical ferrocene moieties in acyclic is induced by absolute config...
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