Dextran-driven hyperbranched black gold nanoparticles templated by guanosine quartets as broadband absorbers for photothermal therapy
Elena Laura Ursu·Alexandru Rotaru·Cristian Ursu·Adina Arvinte·Dragos Peptanariu·Rostyslav Bilyy·Galyna Bila·E. Bila·Volodymyr Antonyuk·Ion Tiginyanu·Monica Sardaru
We report a straightforward aqueous synthesis of black gold nanoassemblies based on supramolecular guanosine quartet (G4) assembly and a dextran co-matrix, in which the functional photothermal component is an interconnected Au(0) plasmonic network. Dextran acts as a multifunctional polymeric co-matrix that helps organize the guanosine moieties and subsequently influences the nucleation and growth environment, particle connectivity, and colloidal stability. In this approach, Au 3+ /Au + ions play