In the presence of Fe3+ ions, the probes display new absorption and emission bands at 526 nm and 551 nm, respectively. Confocal microscopic analysis using the HepG2 cell line showed that probes 1–6 provide fluorescence Off–On changes caused by cellular Fe3+ ions, and demonstrated a ...
The chemosensor shows very high selectivity and sensitivity towards Fe3+ ions over other metal cations such as Na+, K+, Cs+, Mg2+, Ca2+, Ba2+, Al3+, Mn2+, Fe2+, Co2+, Ni2+, Cu2+, Zn2+, Cd2+, Ag+, Hg2+ and Pb2+ ions in aqueous buffer solution....
The EPR spectrum of first nearest neighbour pairs of Fe 3+ ions substituting for Al 3+ ions in beryl is reported. The form of the pair spin Hamiltonian is discussed, and operator equivalent factors for fourth-order terms are tabulated. The Fe 3+ pair interionic coupling corresponds to isotro...
The concentrations of the Fe ions and their sites have been obtained with ±0·001 mol% precision (resolution, repeatability) for the test series of glasses. Accuracy could not be established because there is no other method that could provide better than the ±0·3 wt% received with the ...
摘要: Mssbauer measurements in Ba 1y Sr y Fe 12x Al x O 19 (0 7.2) they rapidly decrease and go down to zero for x - 10. On the contrary, for a given x , the number of Fe 3+ ions in trigonal sites increases with increasing y ....
SiO2 is only present as Fe2+ ions. The XPS spectra of Fe 2p and Fe 3p peaks for 2FeO?SiO2 Table 1 Peak positions and FWHM of the XPS Fe 3p peak for Fe3+ obtained from Fe2O3 and for Fe2+ obtained from 2FeO?SiO2. The table also shows the ratios of Fe2+ and Fe3+ for Fe3O...
The contamination effects of Fe 3+ and Al 3+ on the performance of polymer electrolyte membrane fuel cells were investigated by continuously injecting Fe 3+ or Al 3+ salt solution into the air stream of an operating fuel cell. Both metal ions individually caused significant cell performance degr...
Chelated gadolinium ions, e.g., Gd-DTPA, are today used clinically as contrast agents for magnetic resonance imaging (MRI). An attractive alternative contr... M Ahrén,Linnéa Selegrd,Fredrik Sderlind,... - 《Journal of Nanoparticle Research》 被引量: 41发表: 2012年 Fabrication and photolumi...
The properties of γ-FeOOH, α-FeOOH and α-Fe2O3 particles formed by hydrolysis of Fe3+ ions in perchlorate containing aqueous solutions were investigated using FT-IR and Mössbauer spectroscopies, TEM and FE SEM. At room temperature, slow hydrolysis of 5 × 10−3 M Fe(ClO4)3 solut...
Taking advantage of their high photoluminescence properties, the C-dots were used as effective fluorescent nanosensor probes for sensitive and selective detection of Fe3+ ions. 展开 关键词: DOTS NANOMATERIALS ABLATION NANOPARTICLES LUMINESCENCE EMISSION SIZE ...