Published in Microchimica Acta
An aptamer-based assay is presented for the determination of fumonisin B1 (FB1). It is bimodal in that both surface-enhanced Raman spectroscopy (SERS) and fluorometry are applied for quantitation. It makes use of platinum-coated gold nanorod (AuNR) and DNA sequences. The complementary DNA of aptamer (cDNA) against FB1 is immobilized on the surface ...
Phototheranostic nanoplatforms are of particular interest for cancer diagnosis and imaging-guided therapy. Herein, we develop a supramolecular approach to fabricate a nanostructured phototheranostic agent through the direct self-assembly of two water-soluble phthalocyanine derivatives, PcS4 and PcN4. The nature of the molecular recognition between ...
Published in Microchimica Acta
A highly stable copper nanoclusters (CuNC) carrying 4-chlorothiophenol as a protective ligand is described. They display self-assembly-induced emission with excitation/emission maxima at 330/605 nm even in neutral or alkaline aqueous environment. The fluorescence of these CuNC is quenched by Hg(II). Quenching is mainly ascribed to the formation of ...
Published in Molecular biology reports
Penicillin V is a bacteriolytic β-lactam antibiotic drug. In the present work, we investigated the inhibitory effect of Penicillin V on the activity of mushroom tyrosinase for the first time. The molecular mechanism for the inhibition of tyrosinase by Penicillin V was investigated by means of kinetics analysis, fluorescence quenching and molecular ...
Published in Microchimica Acta
An optical fiber nanoprobe is presented for fluorometric determination of copper(II). The method based on the use of water-dispersible AgInZnS quantum dots (QDs) deposited at the end of an optical fiber in a poly(vinyl alcohol) matrix. The fluorescnece of the QDs, best measured at excitation/emisssion wavelengths of 365/570 nm, is quenched by Cu(II...
Published in Journal of colloid and interface science
In the present work, spongy graphitic carbon nitride (GCN) and silver oxide nanocomposites were prepared through a facile hydrothermal method at 160 °C for 4 h using GCN, silver nitrate, and dipotassium hydrogen phosphate as the starting materials. The prepared samples were characterized by scanning electron microscopy, energy dispersive X-ray spec...
Published in Journal of hazardous materials
The broad spectrum detection of veterinary drugs is very important for rapid and large-scale safe screen of animal-derived foods. Metal-organic frameworks (MOFs), as a kind of emerged functional porous materials are quite promising in the chemical sensing and molecular detection. In this work, we report the high-performance broad spectrum detection...
Published in Medical & Biological Engineering & Computing
This study investigated the accuracy, drift, and clinical usefulness of a new optical transcutaneous oxygen tension (tcPO2) measuring technique, combined with a conventional electrochemical transcutaneous carbon dioxide (tcPCO2) measurement and reflectance pulse oximetry in the novel transcutaneous OxiVenT™ Sensor. In vitro gas studies were perform...
Published in Food chemistry
Researches based on metal complexes of plant-derived phenolic acids have attracted much attention due to their beneficial applications in the development of functional food products, dietary supplements and pharmacology. Binding of phenolic acids with serum proteins greatly influences their pharmacological properties. In this context, interactions ...
Published in Microchimica Acta
A method is described for the determination of the CCAAT/enhancer binding protein alpha (C/EBPα) which is a regulator in adipocyte differentiation. The method is based on quenching of the red fluorescence (with excitation/emission maxima at 548/562 nm) of Cy3-labeled DNA if it becomes adsorbed on positively charged gold nanoparticles (AuNPs). Fluor...
