Results 81 to 90 of about 6,709 (215)

Voltammetric behavior and trace determination of cadmium at a calixarene modified screen-printed carbon electrode

open access: yes, 2002
Screen-printed carbon electrodes (SPCEs) have been evaluated for the anodic stripping voltammetric determination of cadmium using open circuit accumulation facilitated by two different calixarenes: a novel thiolated calixarene, calixarene (I), (5,11,17 ...
Hart, John P.   +8 more
core   +1 more source

Radiation Stability of Calixarene Based Solvent System [PDF]

open access: yes, 1999
This report details testing performed to determine the radiation stability of the calixarene and Cs-3 modifier solvent ...
Peterson, R.A.
core   +1 more source

Modification of Oligo- and Polylactides With Macrocyclic Fragments: Synthesis and Properties

open access: yesFrontiers in Chemistry, 2019
Products of lactic acid polycondensation (poly- and oligolactic acids) are widely used as packaging materials, drug delivery agents, implants etc.
Olga A. Mostovaya   +5 more
doaj   +1 more source

Biomacromolecule Recognition by Calixarene Macrocycles.

open access: yes, 2017
After having been extensively studied as a receptor for small guests (both neutral and charged), the last 20 years have witnessed the progressive use of the calixarene macrocycle as a ligand for the recognition of large biomacromolecules.
SANSONE, Francesco   +5 more
core   +1 more source

Protein camouflage in cytochrome c–calixarene complexes

open access: yes, 2012
Small molecules that recognize protein surfaces are important tools for modifying protein interaction properties. Since the 1980s, several thousand studies concerning calixarenes and host–guest interactions have been published.
Fernandes, Humberto   +4 more
core   +1 more source

Structural conditions required for the bridge lithiation and substitution of a basic calix[4]arene

open access: yesBeilstein Journal of Organic Chemistry, 2011
Lithiation and subsequent reaction with CO2 was applied to calix[4]arenes with different, equal or mixed, ether functions at the lower-rim site as well as tert-butylated or non-tert-butylated upper-rim positions. Whereas this reaction fails for symmetric
Conrad Fischer   +2 more
doaj   +1 more source

Calixarene Phosphorylation: Cation Control of Reaction Pathways

open access: yes, 1993
The hydroxide ion catalysed phosphorylation of p-t- butylcalix [4] arene by diethyl chlorophosphate under heterogeneous conditions shows a marked sensitivity to the nature of the phase transfer catalyst used.
LT Byrne   +5 more
core   +1 more source

The Synthesis of Diquinone and Dihydroquinone Derivatives of Calix[4]arene and Electrochemical Characterization on Au(111) surface.

open access: yesActa Chimica Slovenica, 2016
Several new electroactive diquinone and dihydroquinone derivatives of calix[4]arene bearing anchor functional groups were designed, synthesized and characterized. A method for selective protection of the hydroquinone –OH groups with trimethylsilyl groups
Bostjan Genorio
doaj   +1 more source

Strong binding and fluorescence sensing of bisphosphonates by guanidinium-modified calix[5]arene

open access: yesBeilstein Journal of Organic Chemistry, 2018
Based on the indicator displacement assay (IDA) approach, we herein report the fluorescence “switch-on” sensing and quantitative detection of bisphosphonates (BPs), a class of drugs extensively used in the treatment of patients with various skeletal ...
Jie Gao   +5 more
doaj   +1 more source

Calixarene-mediated protein assembly

open access: yes, 2014
Solved the first crystal structure of a protein-calixarene complex (at 1.4 Angstrom resolution). The results provide exact structural information on the amino acid preference of the anionic p-sulfonatocalix[4]arene (sclx4) for the lysine-rich cytochrome ...
McGovern, Róise Ella
core   +1 more source

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