Results 21 to 30 of about 300,802 (279)

Tying a knot between crown ethers and porphyrins

open access: yesBeilstein Journal of Organic Chemistry, 2023
Porphyrins and crown ether hybrids have emerged as a promising class of molecules composed of elements of a tetrapyrrole macrocycle and an oligo(ethylene glycol) segment.
Maksym Matviyishyn, Bartosz Szyszko
doaj   +1 more source

Diaquadichloridomethylphenyltin(IV)–1,4,7,10,13-pentaoxacyclopentadecane (1/1)

open access: yesActa Crystallographica Section E, 2012
The asymmetric unit of the title cocrystal, [Sn(CH3)(C6H5)Cl2(H2O)2]·C10H20O5, contains two independent formula units. The organotin molecules exhibit a six-coordinate metal atom and are linked to the crown ether molecules by water&#8211 ...
Marzieh Vafaee   +2 more
doaj   +1 more source

A Newly Synthesized Tris(crown ether) Ionophore for Assisted Ion Transfer at NanoITIES Electrodes

open access: yesChemElectroChem, 2020
Assisted ion transfer at a pipet‐supported interface between two immiscible electrolyte solutions (ITIES) have become a prominent method for the detection of various ionic species and for studying ionic complexation.
Dr. Ran Chen   +9 more
doaj   +1 more source

SYNERGISTIC EXTRACTION OF COBALT(II) WITH MIXTURE OF ACYL-PYRAZOLON AND CROWN-ETHER IN STRONSIUM(II) ENVIRONMENT

open access: yesIndonesian Journal of Chemistry, 2010
Synergistic extraction of cobalt(II) with mixture of acyl-pyrazolon (HL) and crown-ether (E) in the Sr(NO3)2 environment has been studied. In this research, HPMBP (phenyl-1-methyl-3-benzoil-4-pyrazolon-5) was used, with three different kinds of  crown ...
Bambang Rusdiarso
doaj   +1 more source

Synthesis, Isolation, and Study of a Heterobimetallic Uranyl Crown-Ether Complex [PDF]

open access: yes, 2023
Although crown ethers can selectively bind many metal cations, little is known regarding the properties of crown ether complexes of the uranyl dication, UO22+.
Riddhi, Golwankar   +5 more
core   +2 more sources

Synthesis of Polymethyl Crown Ethers. A New Class of Lipophilic Crown Ethers [PDF]

open access: yesBulletin of the Chemical Society of Japan, 1982
Abstract A new class of lipophilic polymethyl crown ethers were synthesized from oligopropylene glycols via the intramolecular cyclization, and the stability constants of some complexes in methanol were determined.
Isao Ikeda   +2 more
openaire   +1 more source

Coordinative peptide recognition. Making intermolecular processes intramolecular [PDF]

open access: yes, 2006
The design of synthetic receptors that function under physiological conditions is still a challenge. A successful strategy is the use of reversible coordination of Lewis-basic guest molecules to Lewis-acidic metal complexes to provide high and selective ...
Kruppa, Michael
core   +1 more source

Computational Evaluation of Methyl (N,N-Dimethylamino)phenyl Ether and Crown Ether for Metal Selective Sensor Development [PDF]

open access: yesPakistan Journal of Analytical & Environmental Chemistry, 2007
The present computational study describes some representative contributions in metal selective sensor development. During the course of study, charge densities have been calculated for a series of methyl (N,N-dimethylamino)phenyl ether and crown ether ...
M. I. Bhanger   +4 more
doaj  

Design of crown ether based micelles and their anti-tumor properties by perturbing potassium ion homeostasis

open access: yesMaterials & Design, 2021
Chemotherapy is one of the most used method for cancer therapy, however, brings huge pain to patients as the drugs commonly causes side effects. Inducing tumor cells apoptosis by perturbing ion homeostasis is a novel approach to replace chemotherapy in ...
Long Pang   +6 more
doaj   +1 more source

4-Ethylanilinium perchlorate–18-crown-6 (1/1)

open access: yesActa Crystallographica Section E, 2010
The asymmetric unit of the title compound, C8H12N+·ClO4−.C12H24O6, contains one half of the cationic [(C2H5—C6H4—NH3)(18-crown-6)]+ moiety and one half of the ClO4− anion.
De-Hong Wu
doaj   +1 more source

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