Search by tag «Luminescence» 5 results

  • Researchers Present New Synthesis Method for Optically Active Carbon Nanodots

    One of the most remarkable carbon-based nanomaterials are luminescent carbon dots, the physical and chemical properties of which are easy to control. Thanks to their low toxicity, these particles are said to possess great potential in the fields of biology and medicine. Carbon dots are made from organic substances; if their precursor contains a chiral center, the resulting nanoparticles will be chiral, too. These particles have various application prospects, including in medical diagnostics. Researchers from ITMO University and St. Petersburg State University, in collaboration with their international colleagues, have developed a new way to synthesize such nanoparticles with stable optical properties.


  • Picture of the Week: Luminescent Image of Carbon Dot Layer

    For over 15 years, scientists have been exploring the nature of carbon dot emission, and this image illustrates the relationship between the emission intensity and the concentration of particles in the dry layer.


  • How New Advanced Materials Help Fight Bacteria – and Cancer

    Gary Hix is a professor of the University of Wolverhampton (the UK) and the head of Wolverhampton School of Sciences. Together with his research team, Prof. Hix designs anti-bacterial medical materials. In an open lecture at ITMO University, he spoke about organic-inorganic hybrid materials, metal phosphonates and oxides, and how these substances are produced. Speaking about anti-bacterial materials, Prof. Hix explained the effect of their structure on the discharge of active substances and how these materials are made to possess therapeutic qualities.


  • ITMO Scientists' Collaboration with German and Swiss Colleagues Wins ERA.Net Research Grant

    A team of scientists from ITMO’s International Research and Education Center for Physics of Nanostructures, together with their colleagues from the Federal Institute for Materials Research and Testing (Germany) and ETH Zurich (Switzerland), have been awarded a grant by the European initiative ERA.Net RUS Plus. Their three-year project concerns the modeling and design of new functional nanomaterials with potential applications in biomedicine and diagnostics. As the researchers note, nanomaterials based on ternary quantum dots can be used to create a sensor platform with unprecedented filtering and sensitivity capabilities for the purpose of multiplexed single-cell pathogen analysis. In the future, results of this research can contribute to the development of more precise and compact devices used for fluorescence analysis of nanostructures.


  • Chemists Create Nanoparticles for Safe Imaging of Tumors

    Chemists from Russia and Switzerland created biosafe luminescent nanoparticles for imaging tumors and blood vessels damaged by heart attacks or strokes. The particles are made of hafnium oxide that can be used for intravenous injections, and doped with ions of rare earth metals. Scientists hope that their invention will become an alternative to the toxic quantum dots, and allow getting images of deep tissues without harming the human body. The study was published in Colloids and Surfaces B: Biointerfaces journal.