Energy Transfer in CeTbF Nanoparticles-CTAB Shell-Chlorin e System.

Formation and electronic excitation energy transfer process in the nanosystem consisting of CeTbF nanoparticles, cetrimonium bromide (CTAB) surfactant, and chlorin e photosensitizer were studied. It was shown that chlorin e molecules bind to CeTbF NP in the presence of CTAB forming thus CeTbF NP-CTAB-chlorin e nanosystem. We consider that binding occurs via chlorin e embedding in the shell of CTAB molecules, formed around NP.

Gold mining for PDT: Great expectations from tiny nanoparticles.

Among many and various products, born by the modern nanotechnology, gold nanoparticles roused a special interest of biomedical researchers. Unique features of the nanoparticles allow to use them not only as effective transporters for therapeutic agents but also as basic components of nanocomposite preparations intended for targeted photodynamic and photothermal therapy of tumours. In the review, physical, chemical and biological properties of gold nanoparticles which can promote PDT efficiency of a designed nanocomposite, are briefly characterized, and promising trends in creation of gold-containing composite photosensitizers are analysed.