Proses sintesis senyawa 1,10 phenanthroline (Phen) dengan logam europium dan kajian sifat-sifat optik pola-pola difraskinya telah dilakukan. Tujuan penelitian ini adalah untuk menginvestigasi spektrum serapan photopluminescence serta difraksi kompleks Phen-Eu. Berdasarkan hasil-hasil analisis data, Phen-Eu memiliki dari 200 sampai 375 nm celah energinya 3,3 eV. Pola-pola sinar-X terdiri atas an...

Pure and europium (Eu(3+)) doped ZrO(2) synthesized by an oil-in-water microemulsion reaction method were investigated by in situ and ex situ X-ray diffraction (XRD), ex situ Raman spectroscopy, high-resolution transmission electron microscopy (HRTEM), steady state and time-resolved photoluminescence (PL) spectroscopies. Based on the Raman spectra excited at three different wavelengths i.e. 488...

7-Amino-4-trifluoromethyl-2-(1H)-quinolinone (cs124-CF3), has been synthesized and found to be an effective antenna molecule (or sensitizer) for europium, but not terbium, luminescence. Specifically, cs124-CF3 has been covalently attached to the chelates diethylenetriaminepentaacetic acid (DTPA) and triethylenepentamine-hexanoic acid (TTHA). When bound to europium, excitation in the absorption ...

BACKGROUND Most insulin autoantibody assays for both human and animal models are in a radioassay format utilizing (125)I-insulin, but despite the radioassay format international workshops have documented difficulty in standardization between laboratories. There is thus a need for simpler assay formats that do not utilize radioactivity, yet retain the high specificity and sensitivity of radioass...

BACKGROUND Nanoparticle-based detection technologies have the potential to improve detection sensitivity in miniature as well as in conventional biochemical assays. We introduce a detection technology that relies on the use of europium(III) nanoparticles and time-resolved fluorometry to improve the detection limit of biochemical assays and to visualize individual molecules in a microtiter plate...

Normal prostate tissue contains high levels of citrate. In the presence of prostate cancer, the citrate level is diminished. In this paper we show that it is possible to use europium-oxytetracycline complex as a citrate fluorescent probe and consequently as a prostate cancer probe. We analyzed normal nude male mice urine and urine from nude male mice in which prostate cancer was induced by intr...

Rapid, sensitive and specific diagnostic assays play an indispensable role in determination of HIV infection stages and evaluation of efficacy of antiretroviral therapy. Recently, our laboratory developed a sensitive Europium nanoparticle-based microtiter-plate immunoassay capable of detecting target analytes at subpicogram per milliliter levels without the use of catalytic enzymes and signal a...

Five rare earth complexeslanthanum(III),praseodymium(III),neodymium(III), samarium(III) and europium(III) have been synthesized from Schiff base ligand (N,N-bis (2-hydroxy-1-naphthylidene) acetylhydrazone). The complexes were characterized based on elemental analysis, molar conductance, ultraviolet, infrared, mass, thermogravimetric and powder X-ray diffraction studies. Infrared spectra sug...