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Supriti Sen et al.
The Analyst, 136(22), 4839-4845 (2011-10-06)
A novel 6-(2-pyridinyl)-5,6-dihydrobenzimidazo[1,2-c]quinazoline (HL) serves as a first-time highly selective and sensitive ratiometric fluorescent chemosensor probe for oxorhenium (ReO(V)) ion in acetonitrile : water = 9 : 1 (v/v) at 25 °C. The decrease in fluorescence at 410 nm and
Cécile Clavaud et al.
Metallomics : integrated biometal science, 4(2), 179-187 (2012-01-26)
The dynamic combinatorial assembly of libraries of modular cyclophilin hCyp18 oxorhenium inhibitors of general formula [A˙ReO˙B] was accelerated by addition of increasing concentrations of hCyp18 ('Cyclophilin Enhancing Effect', CEE). This result suggested that modules assembly might proceed through an in
Cameron A Lippert et al.
Journal of the American Chemical Society, 132(11), 3879-3892 (2010-03-03)
Five-coordinate oxorhenium(V) anions with redox-active catecholate and amidophenolate ligands are shown to effect clean bimetallic cleavage of O(2) to give dioxorhenium(VII) products. A structural homologue with redox-inert oxalate ligands does not react with O(2). Redox-active ligands lower the kinetic barrier
M-S Miao et al.
Journal of physics. Condensed matter : an Institute of Physics journal, 24(21), 215503-215503 (2012-05-01)
Despite the wide-ranging applications of binary Rh and Ir oxides, their stability and trends in Rh and Ir oxidation states are not fully understood. Using first-principles electronic structure calculations, we demonstrate that the origin of the categorical stability of Ir(4+)
Albert Schröckeneder et al.
Inorganic chemistry, 48(24), 11608-11614 (2009-11-27)
Rhenium(V) oxo complexes of the type [ReOX(L)(2)] (1-7; X = Cl, Br) containing beta-ketiminate ligands (L = CH(3)C(O)CH(2)C(NAr)CH(3): Ar = Ph (APOH), 2-MePh (MPOH), 2,6-Me(2)Ph (DPOH), 2,6-(i)Pr(2)Ph (DiPOH)) have been prepared by reaction of [ReOX(3)(OPPh(3))(SMe(2))] (X = Cl, Br) with
Anthony Yoboué et al.
Chemical communications (Cambridge, England), 47(14), 4285-4287 (2011-03-03)
Heterogeneous Re/SiO(2) catalysts prepared using a one pot sol-gel synthesis were found to display high activity in the direct, selective methanol conversion to methylal, which is correlated to an unprecedented rhenium oxide structure.
Dien Li et al.
Journal of hazardous materials, 374, 177-185 (2019-04-19)
Technetium-99 (99Tc) is a major contaminant at nuclear power plants and several US Department of Energy sites. Its most common aqueous species, pertechnetate (TcO4-), is very mobile in the environment, and currently there are no effective technologies for its sequestration.
Mark J Bailey et al.
Advanced healthcare materials, 1(4), 437-442 (2012-11-28)
Configuring RE(2) O(3) nanocrystals with pseudo-2D morphologies confers substantive gains in relaxivities over equivalent spherical counterparts. The most promising arises from Gd(2) O(3) whose ionic transverse and longitudinal relaxivities were as high as r(1) = 12.7 mM(-1) s(-1) and r(2)
Michael J Booth et al.
Science (New York, N.Y.), 336(6083), 934-937 (2012-04-28)
5-Methylcytosine can be converted to 5-hydroxymethylcytosine (5hmC) in mammalian DNA by the ten-eleven translocation (TET) enzymes. We introduce oxidative bisulfite sequencing (oxBS-Seq), the first method for quantitative mapping of 5hmC in genomic DNA at single-nucleotide resolution. Selective chemical oxidation of
J Tyler French et al.
Journal of vascular and interventional radiology : JVIR, 21(8), 1271-1279 (2010-05-19)
Minimally invasive interventional cancer therapy with drug-carrying lipid nanoparticles (ie, liposomes) via convection-enhanced delivery by an infusion pump can increase intratumoral drug concentration and retention while facilitating broad distribution throughout solid tumors. The authors investigated the utility of liposome-carrying beta-emitting
Grigory V Kolesnikov et al.
Organic & biomolecular chemistry, 9(21), 7358-7364 (2011-09-07)
The design and synthesis of a neutral macrocyclic host that is capable of perrhenate and pertechnetate recognition is described. The anion affinities and underlying coordination modes were estimated by several experimental and theoretical methods including a new technique--reverse (99)Tc NMR
Lucas M S G A Applegarth et al.
Applied spectroscopy, 69(8), 972-983 (2015-07-15)
This paper reports methods for obtaining time-dependent reduced isotropic Raman spectra of aqueous species in quartz capillary high-pressure optical cells under hydrothermal conditions, as a means of determining quantitative speciation in hydrothermal fluids. The methods have been used to determine
Xiaoyi Wang et al.
ACS applied materials & interfaces, 11(37), 33650-33658 (2019-08-27)
Spectral computed tomography (CT) imaging as a novel imaging technique shows promising prospects in the accurate diagnosis of various diseases. However, clinically iodinated contrast agents suffer from poor signal-to-noise ratio, and emerging heavy-metal-based CT contrast agents arouse great biosafety concern.
Jong Kwon Choe et al.
Environmental science & technology, 44(12), 4716-4721 (2010-05-21)
Recent work demonstrates reduction of aqueous perchlorate by hydrogen at ambient temperatures and pressures using a novel rhenium-palladium bimetal catalyst immobilized on activated carbon (Re/Pd-AC). This study examines the influence of Re speciation on catalyst activity and stability. Rates of
Julie Di Bernardo et al.
Analytical biochemistry, 415(1), 32-38 (2011-05-07)
The sodium/iodide symporter (NIS) is primarily responsible for iodide accumulation in the thyroid gland for the synthesis of thyroid hormones; however, it can also transport other lyotropic anions in the thyroid gland and nonthyroid tissues. Some NIS substrates have important
Yasushi Amada et al.
ChemSusChem, 5(10), 1991-1999 (2012-08-07)
The hydrogenolysis of erythritol using an Ir-ReO(x)/SiO(2) catalyst was performed for the production of butanediols, which are widely used as a raw material of polymers. The activity and selectivity to butanediols on Ir-ReO(x)/SiO(2) was much higher than that on conventional
New sequencing technique produces high-resolution map of 5-hydroxymethylcytosine.
Jonathan Wilkinson
Epigenomics, 4(3), 249-249 (2012-08-10)
David P Cormode et al.
Dalton transactions (Cambridge, England : 2003), 39(28), 6532-6541 (2010-06-17)
A disulfide functionalized bis-ferrocene urea acyclic receptor and disulfide functionalized mono- and bis-ferrocene amide and urea appended upper rim calix[4]arene receptors were prepared for the fabrication of SAM redox-active anion sensors. 1H NMR and diffusive voltammetric anion recognition investigations revealed
Julien Le Gal et al.
Journal of inorganic biochemistry, 105(6), 880-886 (2011-04-23)
Assembly of independent chemical modules through oxorhenium coordination by a NS(2)+S chelation motif was applied to the synthesis of RGD (Arg-Gly-Asp) analogs. Modules were assembled through oxorhenium chelation to give a series of 18 metal complexes in good yields and
Rui Cao et al.
Inorganic chemistry, 50(19), 9499-9507 (2011-08-30)
We describe a multidentate tripodal ligand in which three pendant arms carrying di(2-picolyl)amine units are linked to the ortho positions of a tris(o-xylyl) scaffold, providing N(CH(2)-o-C(6)H(4)CH(2)N(CH(2)py)(2))(3) (L). Reaction of L with CuCl(2) in the presence of hexafluorophosphate anion afforded blue
Marie Aufort et al.
Chembiochem : a European journal of chemical biology, 12(4), 583-592 (2011-02-10)
The parallel oxorhenium-mediated assembly of 288 noncyclic RGD analogues is reported. All complexes contain a NS(2) +S chelating motif that enables the unambiguous coordination of the oxorhenium and oxotechnetium cores. In this study, "modules S" contain a variety of pending
Amanda J Weeks et al.
Nuclear medicine communications, 32(2), 98-105 (2010-11-19)
Accumulation of iodide and other substrates via the human sodium/iodide symporter (hNIS) is fundamental to imaging and therapy of thyroid disease, hNIS reporter gene imaging and hNIS-mediated gene therapy. There is no readily available positron emission tomography (PET) tracer for
Sandra Dorbes et al.
European journal of medicinal chemistry, 45(2), 423-429 (2009-10-27)
The goal of this study is to design new (99m)Tc-radiolabelled shortened CCK derivatives that might be suitable for the molecular imaging of cholecystokinin-2 receptors (CCK2-R), these receptors being over-expressed in a number of neuroendocrine tumors such as medullary thyroid cancer
Olesya A Nikonova et al.
Langmuir : the ACS journal of surfaces and colloids, 27(18), 11622-11628 (2011-08-13)
The use of an inorganic perrhenate ligand in the structure of early-transition-metal alkoxide precursors permits to achieve uniform self-assembly of the primary nanoparticles produced by their hydrolysis. The latter has been carried out in a hydrocarbon reaction medium by the
Baikuntha P Aryal et al.
Journal of biological inorganic chemistry : JBIC : a publication of the Society of Biological Inorganic Chemistry, 17(1), 97-106 (2011-08-24)
Radiolabeled biomolecules are routinely used for clinical diagnostics. (99m)Tc is the most commonly used radioactive tracer in radiopharmaceuticals. (188)Re and (186)Re are also commonly used as radioactive tracers in medicine. However, currently available methods for radiolabeling are lengthy and involve
Marie Aufort et al.
European journal of medicinal chemistry, 46(5), 1779-1788 (2011-03-12)
A library of RGD tripeptide analogs cyclized through oxorhenium coordination by an NS2/S chelation motif was synthesized. Screening towards integrins αVβ3, αIIbβ3 and αVβ5 led to the identification of 6 oxorhenium complexes that bind to integrin αVβ3 in the submicromolar
Eun-Mi Kim et al.
Journal of Korean medical science, 19(5), 647-651 (2004-10-16)
188Re (Rhenium) is easily obtained from an in-house 188W/188Re generator that is similar to the current 99Mo/99mTc generator, making it very convenient for clinical use. This characteristic makes this radionuclide a promising candidate as a therapeutic agent. Polyethylenimine (PEI) is
Yuee Feng et al.
Inorganic chemistry, 48(23), 11058-11066 (2009-11-06)
The detailed syntheses of complexes of the form [Re(O)(X)(RNCH(2)CH(2))(2)N(Me)] (X = Me, Cl, I, R = mesityl, C(6)F(5)), 1-3, incorporating diamidoamine ancillary ligands are described. X-ray crystal structures for the complexes [Re(O)(Me)((C(6)F(5))NCH(2)CH(2))(2)N(Me)], 1a, [Re(O)(I)((C(6)F(5))N CH(2)CH(2))(2)N(Me)], 3a, and [Re(O)(I)((Mes)NCH(2))(2)N(Me)], 3b, are
Dien Li et al.
Journal of environmental radioactivity, 222, 106372-106372 (2020-08-11)
There are few effective technologies for the sequestration of highly water-soluble pertechnetate (TcO4-) from contaminated water despite the urgency of environmental and public health concerns. In this work, anion exchanged and cetyltrimethylammonium bromide (CTAB) functionalized MIL-101-Cr-NO3 were investigated for perrhenate
Guo-Cang Wang et al.
Inorganic chemistry, 52(5), 2556-2563 (2013-02-15)
Heterometallic cerium(IV) perrhenate, permanganate, and molybdate complexes containing the imidodiphosphinate ligand [N(i-Pr2PO)2](-) have been synthesized, and their reactivity was investigated. Treatment of Ce[N(i-Pr2PO)2]3Cl (1) with AgMO4 (M = Re, Mn) afforded Ce[N(i-Pr2PO)2]3(ReO4) (2) or Ce2[N(i-Pr2PO)2]6(MnO4)2 (3). In the solid state
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