Issue 24, 2021

Hollow carbon nanospheres dotted with Gd–Fe nanoparticles for magnetic resonance and photoacoustic imaging

Abstract

Integrating magnetic resonance (MR) and photoacoustic (PA) contrast agents into porous nanomaterials is a favorable way for screening of potential theranostic nanomedicines. Hollow carbon nanospheres (HCSs) dotted with GdPO4 and γ-Fe2O3 (Gd–Fe) nanoparticles are therefore prepared and studied in this work. The resultant Gd–Fe/HCSs possess a size of ∼100 nm with a cavity of ∼80 nm and a shell thickness of ∼10 nm, where the magnetic Gd–Fe nanoparticles are dotted. Owing to the synergistic effects, the Gd–Fe/HCSs give 2.5 times enhanced PA signals as compared with HCSs as well as the inherited MR imaging properties from Gd–Fe nanoparticles. In vivo MR and PA imaging of the liver in mice are consequently evaluated and validated. Furthermore, taking the tunable particle size, hollow cavity, shell thickness, and dotted amounts of nanoparticles into consideration, our studies here provide a useful structural model for the synergistic integration of MR and PA imaging in HCSs.

Graphical abstract: Hollow carbon nanospheres dotted with Gd–Fe nanoparticles for magnetic resonance and photoacoustic imaging

Supplementary files

Article information

Article type
Paper
Submitted
07 Mey 2021
Accepted
24 Mey 2021
First published
26 Mey 2021

Nanoscale, 2021,13, 10943-10952

Hollow carbon nanospheres dotted with Gd–Fe nanoparticles for magnetic resonance and photoacoustic imaging

H. Zhang, T. Wu, Y. Chen, Q. Zhang, Z. Chen, Y. Ling, Y. Jia, Y. Yang, X. Liu and Y. Zhou, Nanoscale, 2021, 13, 10943 DOI: 10.1039/D1NR02914B

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