Einleitung

Simon, Helmut; Rauschenbach, P.

doi:10.1007/978-3-642-80804-3_1

Cited by 6 publications

(1 citation statement)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The gold electrodes used for scintillation measurements were exposed to an aqueous solution of d -glucose (0.1 mol) and 6.5 μL of d -[6- 3 H]-glucose (6.5 μCi) for 24 h. After the probes were used with tridistilled water, they were measured in a Pharmacia liquid scintillation counter (model 1209 Rackbeta). The counting time was 300 s. The decay rates and quenching corrections were carried out following standard procedures using the activity data supplied (Amersham). The Tempax glass background decay rate was subtracted.…”

Section: Methodsmentioning

confidence: 99%

Hydrophobic Gaps of Steroid Size in a Surface Monolayer Collect 1,2-trans-Cyclohexanediol and Glucose from Bulk Water

et al. 1997

View full text Add to dashboard Cite

Mixed monolayers made of steroid thiol molecules lying flat on the surface and thin octadecanethiol walls have been prepared on gold by subsequent chemisorption and self-assembly procedures. Cyclovoltammetry of ferricyanide in bulk water showed 30% of the peak current observed for naked gold electrodes. 1,2-trans-Cyclohexanediol interrupted ferricyanide penetration into the steroid membrane gaps almost quantitatively; its 1,2-cis diastereomer, on the other hand, had practically no blocking effect. Glucose, galactose, and mannose were also efficient blockers for ion penetration into the hydrophobic gaps. Infrared spectroscopy, quartz balance, radioactivity, impedance, and contact angle measurements on the monolayers and its physisorbed entrapments were used to characterize the membrane system and the unique physisorption process of the highly water-soluble compounds in hydrophobic gaps. A model based on the fitting of polyols with a cyclohexane skeleton and equatorial OH-groups into icelike water clusters and the slowdown of diffusion processes in such rigid and shielded clusters is proposed.

show abstract

Section: Methodsmentioning

confidence: 99%

Hydrophobic Gaps of Steroid Size in a Surface Monolayer Collect 1,2-trans-Cyclohexanediol and Glucose from Bulk Water

et al. 1997

View full text Add to dashboard Cite

show abstract

Herstellung radioaktiver Metallocene mit ⁵⁹ Fe, ¹⁰³ Ru und ¹⁹¹ Os als Zentralatom

1975

View full text Add to dashboard Cite

Durch Erhitzen von nicht-radioaktiven Ferrocen-Derivaten mit radioaktiven Metallhalogeniden, z. B. lO3RuCI3, gelingt die Synthese von radioaktiven Metallocenen. Die radiochemische Ausbeute bei der Reaktion mit lO3RuC13 oder s9FeCI3 betragt 5-70%, mit 19*OsC14 knapp 1 %. Die radioaktiven Metallocene lassen sich durch DC leicht von radioaktiven Nebenprodukten trennen.By heating of inactive ferrocene derivatives with radioactive metall halides, i. e. 103RuC13, radioactive metallocenes are synthesized with yields between 5 and 70 % with 103RuCI~ or 59FeCI3 and nearly 1 % with 191OsC14. The radioactive metallocenes can be separated easily from radioactive by-products by TLC.Seit der Entdeckung des Dicyclopentadienyleisens (Ferrocen) 1.2) wurden verschiedene Verfahren zur radioaktiven Markierung dieser Organometallkomplexe beschrieben. Giirte und WenzeP-4) synthetisierten [lo6Ru]Ruthenocen und [~Co]Cobaltocen durch Uberleiten von Cyclopentadien-Dampf bei erh6hter Temperatur iiber einen Eisen-Katalysator, der das entsprechende Radionuklid enthielt. Analog zur inaktiven Synthese stellte Manns) [59Fe]Ferrocen durch Umsetzen von s9FeC12 mit C5H6 in Gegenwart einer Base dar. Die gleiche Verbindung gewannen Sutin und Dodson6) bei der Szilard-Chalmers-Reaktion mit Ferrocen. Baumgiirrner und Reichold7) bestrahlten eine Mischung aus spaltbarem Material (z. B. Uran) und Ferrocen als Fangerverbindung mit thermischen Neutronen. Von den Spaltprodukten des Urans fand sich 59Fe und 103Ru 2. T. in Form des Ferrocens und des Ruthenocens wieder.

show abstract

Synthesis of labeled metallocenes via double Π‐ligand transfer

Stadlbauer

Nipper

Wenzel

1977

Labelled Comp Radiopharmac

View full text Add to dashboard Cite

show abstract

Einleitung

Cited by 6 publications

References 44 publications

Hydrophobic Gaps of Steroid Size in a Surface Monolayer Collect 1,2-trans-Cyclohexanediol and Glucose from Bulk Water

Hydrophobic Gaps of Steroid Size in a Surface Monolayer Collect 1,2-trans-Cyclohexanediol and Glucose from Bulk Water

Herstellung radioaktiver Metallocene mit ⁵⁹ Fe, ¹⁰³ Ru und ¹⁹¹ Os als Zentralatom

Synthesis of labeled metallocenes via double Π‐ligand transfer

Contact Info

Product

Resources

About

Einleitung

Cited by 6 publications

References 44 publications

Hydrophobic Gaps of Steroid Size in a Surface Monolayer Collect 1,2-trans-Cyclohexanediol and Glucose from Bulk Water

Hydrophobic Gaps of Steroid Size in a Surface Monolayer Collect 1,2-trans-Cyclohexanediol and Glucose from Bulk Water

Herstellung radioaktiver Metallocene mit 59 Fe, 103 Ru und 191 Os als Zentralatom

Synthesis of labeled metallocenes via double Π‐ligand transfer

Contact Info

Product

Resources

About

Herstellung radioaktiver Metallocene mit ⁵⁹ Fe, ¹⁰³ Ru und ¹⁹¹ Os als Zentralatom