Listar GI-REACT! - Artigos por data de publicación
Mostrando ítems 41-60 de 103
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Spectroscopic properties of a family of mono‐ to trinuclear lanthanide complexes
(Wiley, 2017-04-10)[Abstract] A series of mono‐, di‐, and trinuclear complexes of Eu and Tb was designed to study the influence of the number of Ln emitting centers on the luminescence properties of discrete polynuclear complexes. The complexes ... -
Selective growth inhibition of cancer cells with doxorubicin-loaded CB[7]-modified iron-oxide nanoparticles
(Royal Society of Chemistry, 2017-05-03)[Abstract] Cucurbit[7]uril-modified iron-oxide nanoparticles (CB[7]NPs) were loaded with doxorubicin hydrochloride (Dox) and tested as a drug delivery system. Dox was found to interact with the carbonyl-rich rims of the ... -
1,4,7‐triazacyclononane‐based bifunctional picolinate ligands for efficient copper complexation
(Wiley, 2017-05-10)[Abstract] Three 1,4,7‐triazacyclononane‐based (tacn‐based) ligands containing picolyl and picolinate pendant arms (no3py, no2pa1py, and no3pa) were synthesized, and their copper(II) complexation properties were studied ... -
Optimising the relaxivities of Mn2+ complexes by targeting human serum albumin (HSA)
(Royal Society of Chemistry, 2017-07-14)[Abstract] We report two novel macrocyclic ligands based on the 1,4-DO2AM platform (1,4-DO2AM = 2,2′-(1,4,7,10-tetraazacyclododecane-1,4-diyl)diacetamide) and containing two benzyl groups attached either to the nitrogen ... -
Spectrally undiscerned isomers might lead to erroneous determination of water exchange rates of paraCEST Eu(III) agents
(American Chemical Society, 2017-07-17)[Abstract] We report a detailed study of the solution structure and water exchange rate of a Eu(III) complex with the cyclen-based ligand L1, containing (S)-2-(2-acetamido)-3-(4 (trifluoromethyl)phenyl)propanoate pendant ... -
A combined NMR and DFT study of conformational dynamics in lanthanide complexes of macrocyclic DOTA-like ligands
(Royal Society of Chemistry, 2017-09-06)[Abstract] The solution dynamics of the Eu(III) complexes of H4dota (1,4,7,10-tetraazacyclododecane-1,4,7,10-tetracarboxylic acid) and H5do3ap (1,4,7,10-tetraazacyclododecane-4,7,10-tris(carboxymethyl)-1-methylphosphonic ... -
The role of the capping bond effect on pyclen natY3+/90Y3+ chelates: full control of the regiospecific N-functionalization makes the difference
(Royal Society of Chemistry, 2017-09-07)[Abstract] Thanks to a smart regiospecific N-functionalization, a pyclen based ligand bearing one picolinate and two acetate arms organized in a dissymmetric manner was synthesized for Y3+ complexation, and compared to its ... -
Effects of the substituents of pyrazole/thiazine ligands on the magnetic properties of chloro-bridged Cu(II) complexes
(Royal Society of Chemistry, 2017-09-07)[Abstract] We have synthesised and characterised the dimeric copper(II) complexes [{CuCl(PzTz)}2(μ-Cl)2], [{CuCl(DMPzTz)}2(μ-Cl)2] and [{CuCl(DPhPzTz)}2(μ-Cl)2] and the monomeric complex [CuCl2(DMPzTz)] (PzTz = ... -
Tuning the copper(II) coordination properties of cyclam by subtle chemical modifications
(Royal Society of Chemistry, 2017-09-14)[Abstract] The acid–base and copper(II) coordination properties of three previously described cyclam derivatives are reported. Potentiometry, mass spectrometry, UV-vis absorption spectroscopy, electrochemistry and theoretical ... -
Dimer formation of GdDO3A-arylsulfonamide complexes causes loss of pH-dependency of relaxivity
(Royal Society of Chemistry, 2017-11-06)[Abstract] Gadolinium(III) complexes with pH-dependent relaxivities have been proposed as responsive magnetic resonance imaging (MRI) contrast agents (CA) for mapping of pH value in living subjects. The latter is clinically ... -
Recognition of AMP, ADP and ATP through cooperative binding by Cu(II) and Zn(II) complexes containing urea and/or phenylboronic acid moieties
(MDPI, 2018)[Abstract] We report a series of Cu(II) and Zn(II) complexes with different ligands containing a dipicolyl unit functionalized with urea groups that may contain or not a phenylboronic acid function. These complexes were ... -
Simulated Sunlight Photodegradation of 2-Mercaptobenzothiazole by Heterogeneous Photo-Fenton Using a Natural Clay Powder
(Elsevier, 2018-02-24)[Abstract] The efficiency of 2-mercaptobenzothiazole (MBT) degradation by heterogeneous photo-Fenton process using local natural clay powder (NCP) is described. Experiments were conducted at natural pH with a batch reactor ... -
Diimidazolium Halobismuthates [Dim]2[Bi2X10] (X = Cl–, Br–, or I–): A New Class of Thermochromic and Photoluminescent Materials
(American Chemical Society (ACS), 2018-06-12)[Abstract] We present a novel family of polyhalide salts of Bi(III) with the general formula [Dim]2[Bi2X10], where Dim2+ is the diimidazolium cation (C9H14N4)2+ and X is Cl–, Br–, or I–. Single-phase materials are easily ... -
Sensing uranyl(VI) ions by coordination and energy transfer to a luminescent europium(III) complex
(Wiley, 2018-06-13)[Abstract] The release of uranyl(VI) is a hazardous environmental issue, with limited ways to monitor accumulation in situ. Here, we present a method for the detection of uranyl(VI) ions through the utilization of a unique ... -
Modeling the OEC with two new biomimetic models: preparations, structural characterization, and water photolysis studies of a Ba–Mn box type complex and a Mn4N6 planar-diamond cluster
(MDPI, 2018-09-07)[Abstract] The oxygen-evolving complex (OEC) is the native enzyme that catalyzes the oxidation of water in natural photosynthesis. Two new classes of manganese cluster complexes of formula Ba2Mn2L12(H3L1)2(CH3OH)4 1 and ... -
Degradation of Aqueous Ketoprofen by Heterogeneous Photocatalysis Using Bi2S3/TiO2–Montmorillonite Nanocomposites Under Simulated Solar Irradiation
(Elsevier, 2018-09-13)[Abstract] The photocatalytic degradation of Ketoprofen (KP), 2-(3-benzoylphenyl)-propionic acid was studied under near UV–Vis irradiation (NUV-Vis) using supported photocatalysts. Bi2S3/TiO2-montmorillonite (Bi2S3/TiO2-Mt) ... -
Electronic versus steric control in palladium complexes of carboranyl phosphine-iminophosphorane ligands
(Royal Society of Chemistry, 2018-11-30)[Abstract] A new family of carboranyl phosphine-iminophosphorane ligands was prepared and characterized. The new ligands present a carboranyl group directly attached to the iminophosphorane nitrogen atom through a cage ... -
A Pentadentate Member of the Picolinate Family for Mn(ɪɪ) Complexation and an Amphiphilic Derivative
(Royal Society of Chemistry, 2018-12-04)[Abstract] We report a pentadentate ligand containing a 2,2′-azanediyldiacetic acid moiety functionalized with a picolinate group at the nitrogen atom (H3paada), as well as a lipophylic derivative functionalized with a ... -
Accelerating water exchange in GdIII–DO3A-derivatives by favouring the dissociative mechanism through hydrogen bonding
(Royal Society of Chemistry, 2018-12-10)[Abstract] The GdIII-complexes of DO3A-acetophenone and ortho- or para- hydroxyacetophenone ligands have been investigated to assess the effect of the presence of a phenol group on the relaxivity and on the water exchange ... -
Controlling Water Exchange Rates in Potential Mn²⁺-Based MRI Agents Derived From NO2A²⁻
(Royal Society of Chemistry, 2019-02-22)[Abstract] We report a series of pentadentate ligands based on a 1,4,7-triazacyclononane-1,4-diacetic acid (H2NO2A) containing different substituents attached to the third nitrogen atom of the macrocyclic unit. Detailed ...