Unveiling the Excited-State Dynamics and Interfacial Interactions in Dye-Sensitized NaNdF₄ Nanoparticles for Efficient Photothermal Effect.

ABSTRACT: Near-infrared (NIR) dyes can overcome the weak absorption of lanthanide nanoparticles (NPs) by antenna sensitization, offering new avenues to develop efficient and versatile lanthanide nanomaterials. However, current research on dye-sensitized lanthanide NPs for photothermal conversion is still preliminary, and the involved excited-state dynamics and interfacial interactions remain elusive. Herein, steady-state/transient absorption spectroscopy and theoretical calculation are used to investigate the coordination and aggregation states of cypate dyes on NaNdF₄ NPs, revealing the influence of interfacial interactions on resonant energy transfer. Synergetic heat-generation mechanism of lanthanide cross-relaxation and dye intermolecular collisions is further proposed. The phototherm

SUBMITTER: Gong J 

PROVIDER: S-EPMC12279181 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature