3 documents found, page 1 of 1
Design of oligoaziridine-PEG coatings for efficient nanogold cellular biotagging
Silva, A. Sofia; Bonifácio, Vasco; Raje, Vivek; Branco, Paula S.; Machado, Paulo Filipe Brito; Correia, Ilídio Joaquim Sobreira; Ricardo, Ana AguiarGold nanoparticles (AuNPs) are the most investigated nanomaterials for theragnosis applications. In a research field where live cell assays, as well as the tracking of nanomaterials into a cell's environment, are of extremely importance, water-soluble AuNPs have been intensively studied to overcome the toxic effects exerted by coatings. Unfortunately, AuNPs fluorescent tagging often fails due to self-quenching ...
A Family of Styrylcoumarins: Synthesis, Spectroscopic, Photophysical and Photoc...
Avó, João; Martins, Sérgio; Parola, A. Jorge; Lima, João C.; Branco, Paula S.; Prates Ramalho, João P.; Pereira, AntónioPhotochromism, which is the reversible transformation between two molecular forms with different absorption spectra, resulting from photoirradiation, has applicability in several fields, including light modulation materials, optical recording materials, optical switches and photochromic inks.[1] The switching from one molecular state to another is dependent upon the efficiency of light absorption by the input c...
Dual on–off and off–on switchable oligoaziridine biosensor
Raje, Vivek; Morgado, Patrícia I.; Ribeiro, MP.; Correia, Ilídio Joaquim Sobreira; Bonifácio, Vasco; Branco, Paula S.; Ricardo, Ana AguiarA water-soluble biocompatible aziridine-based biosensor with pendant anthracene units was synthesized by radicalar polymerization of N-substituted aziridines in supercritical carbon dioxide. The binding ability of the sensor towards a series of metal ions was examined by comparing the fluorescence intensities of the solutions before and after the addition of 100 equivalents of a solution of the metal ion chlori...