Chitosan nanocomposites with CdSe/ZnS quantum dots and porphyrin
F. A. Sewid, Kirill Annas, Aliaksei Dubavik, А. В. Вениаминов, В. Г. Маслов, Anna Orlova
Abstract
Water-soluble nanocomposites based on CdSe/ZnS quantum dots (QDs) and hydrophobic tetraphenylporphyrin (TPP) molecules passivated by chitosan (CS) have been formed. Magnetic circular dichroism (MCD) spectra evidence TPP presence in both monomeric and agglomerated forms in the nanocomposites. The nanocomposites demonstrate more pronounced singlet oxygen generation compared to free TPP in CS at the same concentration due to the intracomplex Förster resonance energy transfer (FRET) with a 45% average efficiency.
Topics & Concepts
NanocompositeQuantum dotChitosanPorphyrinSinglet oxygenMonomerEnergy transferMaterials scienceNanoparticlePhotochemistryChemical engineeringNanotechnologyChemistryOxygenPolymerChemical physicsOrganic chemistryComposite materialEngineeringQuantum Dots Synthesis And PropertiesPorphyrin and Phthalocyanine ChemistryNanoplatforms for cancer theranostics