Cu1.94S–MnS dimeric nanoheterostructures with bifunctions: localized surface plasmon resonance and magnetism

Abstract

Cu_1.94S–MnS dimeric nanoheterostructures are fabricated by employing Cu_1.94S nanoplates as precursors. By managing the heterogrowth of MnS, the localized surface plasmon resonance wavelength of Cu_1.94S can be optimized to 1323 nm, which makes this nanoheterostructure applicable as a light absorbing agent for photothermal therapy. Meanwhile, Mn²⁺ ions enable the nanoheterostructures to exhibit paramagnetic behavior at room temperature, indicating their possible application as a magnetic contrast agent for magnetic resonant imaging. This kind of bifunctional material is a potential candidate for the so-called “theranostic agent”, which is of great significance in biomedical application.