The behavior of the neutral and basic aqueous ferrocyanide system under irradiation is investigated using the coupling of a LINAC with infrared spectroscopy. The comparison between the neutral and basic system evidences the formation of the hydroxopentacyanoferrate (III) ions and gives informati...

We study the propagation of pH fronts in a narrow, pseudo-one-dimensional strip of gel containing bromate, sulfite, ferrocyanide and aluminum ions. The front propagation speed v decreases with [ Al3+] as 1/v=1/v0+c[Al3+], where c is a constant. We determine the diffusion coefficients of protons ...

A simple one-step approach for fabricating copper ferrocyanide-embedded magnetic hydrogel beads (CuFC-MHBs) was designed, and the beads were applied to the effective removal of cesium (Cs) and then magnetically separated from water. The polyvinyl alcohol (PVA)-coated CuFC (PVA-CuFC) was first sy...

Ferrocyanide (Fe(CN)4−6) adsorption onto γ-alumina (γ-Al2O3(s)) and gibbsite (Al(OH)3(s)) was investigated over a wide pH range and at various solid loadings. Batch experiments were performed using 100-ml solutions (I=0.01 M NaCl) dosed with 1.0 mg l−1 Fe(CN)4−6 as CN. Equilibrium adsorption–...

Separation of platinum-group metals (PGMs: Ru, Rh, Pd) and Mo from high-level liquid waste (HLLW) makes the vitrification process more stable. Aluminum ferrocyanide (AlHCF) has been synthesized, and it is suitable for the simultaneous recovery of PGMs and Mo from HLLW. In this study, an adsorpti...

In this work, surface of graphene oxide (GO) was functionalized by zirconium (Zr). The GO-Zr nanocomposite was characterized by XRD, SEM, XPS and zeta-potential analysis. Sheets of the GO-Zr were strongly wrinkled and the layered structure of GO was disrupted after adsorption of Zr. The GO-Zr na...

Nanocrystalline ZrC has been prepared via a convenient route by the reaction of metallic magnesium powder with zirconium oxide and lithium carbonate in an autoclave at 600 °C. X-ray powder diffraction pattern indicated that the product was cubic zirconium carbide, and the cell constant was a = ...

Cancer is one of the most commonly diagnosed diseases worldwide; its mortality rate is high, and there is still a demand for the development of antitumor active drugs. Triterpenoic acids show many pharmacological effects, among them antitumor activity. One of these, maslinic acid-1 is of interes...

A convenient method for deprotection of allyl carboxylic esters has been developed by using the inexpensive and environmentally friendly reagent dimethylsulfoxide–iodine. A variety of carboxylic esters were deprotected to the carboxylic acids. This method is more efficient and operationally sim...

4-Phospho-d-erythronate is an intermediate in the synthesis of pyridoxal 5′-phosphate in some bacteria and an inhibitor of ribose 5-phosphate isomerase. Previous synthetic schemes for the preparation of 4-phospho-d-erythronate required expensive precursors and typically gave low yields. We repo...

A new star-shaped D–π–A molecule with triphenylamine (TPA) as core and donor unit, octyl cyanoacetate (CA) as end group and acceptor unit, and 2,2′-bithiophene vinylene (bTV) as π bridge, S(TPA-bTV-CA) was designed and synthesized for the application as donor materials in solution-processed...

This study aims to prepare 99mTechnetium Pheophorbide-a (99mTc-PH-A) complex and evaluate its efficiency as an infection imaging agent. First, PH-A was obtained from Spirulina maxima algae, and the product compound was confirmed using 1H NMR and MS (ESI) methods. The PH-A was then labeled with 9...

Pheophorbide-a, a chlorine based photosensitizer known to be selectively accumulated in cancer cells, was conjugated with anticancer drugs, doxorubicin and paclitaxel in the purpose of selective cancer diagnosis and therapy. Pheophorbide-a was conjugated with anticancer drugs via directly and by...

Leaf senescence is one of the major factors contributing to the productivity and the grain quality in crops. The regulatory mechanism of leaf senescence remains largely unknown. Here, we report the identification and characterization of a rice early senescence 1 (eas1) mutant, which displayed an...

C132-Alkylations of a 9:1 epimeric mixture of methyl pheophorbide a/a′, derived from naturally occurring chlorophyll a, were examined by using primary, secondary, and tertiary alkyl iodides. The sterically undemanding C132-alkylation of the methyl pheophorbide epimers successfully afforded thei...

A facile synthesis for cyanochlorin related to chlorophyll from a formyl-substituted chlorin, by the oxidation of methyl (pyro)pheophorbide-a, was accomplished. These readily available chlorin aldehydes were assembled together with hydroxylamine hydrochloride in a tandem process to produce the c...

Targeted drug delivery has been an important issue for tumor therapy including photodynamic therapy (PDT). The purpose of our study is to increase the targeting efficiency of photosensitizer (PS) using folate-modified nanoparticles (NPs) to tumor site in vivo. Folate receptor is over-expressed o...

BackgroundApproximately 6–7 million people are infected with Trypanosoma cruzi, the etiological agent of Chagas’ disease. Only two therapeutic compounds have been found to be useful against this disease: nifurtimox and benznidazole. These drugs have been effective in the acute phase of the dis...

Leishmaniasis is a disease caused by hemoflagellate protozoa, affecting millions of people worldwide. The difficulties of treating patients with this parasitosis include the limited efficacy and many side effects of the currently available drugs. Therefore, the search for new compounds with leis...

Pheophorbide-a, a non-selective photosensitizer, was conjugated with cancer-targeting moieties, such as folic acid, the CRGDLASLC peptide, the cRGDfK peptide and leuprorelin, for the purpose of targeted photodynamic cancer therapy. The cellular uptake of pheophorbide-a conjugates in cancer cells...