Synthesis and Optimization of MoS 2 @Fe 3 O 4 ‐ICG/Pt(IV) Nanoflowers for MR/IR/PA Bioimaging and Combined PTT/PDT/Chemotherapy Triggered by 808 nm Laser

Abstract

Elaborately designed biocompatible nanoplatforms simultaneously achieving multimodal bioimaging and therapeutic functions are highly desirable for modern biomedical applications. Herein, uniform MoS 2 nanoflowers with a broad size range of 80–180 nm have been synthesized through a facile, controllable, and scalable hydrothermal method. The strong absorbance of MoS 2 nanoflowers at 808 nm imparts them with high efficiency and stability of photothermal conversion. Then a novel multifunctional composite of MoS 2 @Fe 3 O 4 ‐ICG/Pt(IV) (labeled as Mo@Fe‐ICG/Pt) is designed by covalently grafting Fe 3 O 4 nanoparticles with polyethylenimine (PEI) functionalized MoS 2 , and then loading indocyanine green molecules (ICG, photosensitizers) and platinum (IV) prodrugs (labeled as Pt(IV) prodrugs) on the surface of MoS 2 @Fe 3 O 4 . The resulting Mo@Fe‐ICG/Pt nanocomposites can achieve excellent magnetic resonance/infrared thermal/photoacoustic trimodal biomaging as well as remarkably enhanced antitumor efficacy of combined photothermal therapy, photodynamic therapy, and chemotherapy triggered by a single 808 nm NIR laser, thus leading to an ideal nanoplatform for cancer diagnosis and treatment in future.

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• Multifunctional magnetic iron oxide nanoparticles: an advanced platform for cancer theranostics · 2020
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• Defect engineered bioactive transition metals dichalcogenides quantum dots · 2019
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• Nanotechnology for Cancer Therapy Based on Chemotherapy · 2018
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