Generating New Cross‐Relaxation Pathways by Coating Prussian Blue on NaNdF4 To Fabricate Enhanced Photothermal Agents

Cross‐relaxation among sensitizers is commonly regarded as deleterious in fluorescent materials, although favorable in photothermal agents. Herein, we coated Prussian blue (PB) on NaNdF4 nanoparticles to fabricate core–shell nanocomplexes with new cross relaxation pathways between the ladder‐like en...

Full description

Saved in:
Bibliographic Details
Published in:Angewandte Chemie International Edition 2019-06, Vol.58 (25), p.8536-8540
Main Authors: Yu, Zhongzheng, Hu, Wenbo, Zhao, Hui, Miao, Xiaofei, Guan, Yan, Cai, Weizheng, Zeng, Zhiping, Fan, Quli, Tan, Timothy Thatt Yang
Format: Article
Language:English
Subjects:
Cross relaxation
dyes/pigments
electronic structure
Energy conversion efficiency
Energy levels
Fluorescence
In vivo methods and tests
Nanoparticles
nanostructures
photothermal agents
Photothermal conversion
Pigments
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Cross‐relaxation among sensitizers is commonly regarded as deleterious in fluorescent materials, although favorable in photothermal agents. Herein, we coated Prussian blue (PB) on NaNdF4 nanoparticles to fabricate core–shell nanocomplexes with new cross relaxation pathways between the ladder‐like energy levels of Nd3+ ions and continuous energy band of PB. The photothermal conversion efficiency was improved exceptionally and the mechanism of the enhanced photothermal effect was investigated. In vivo photoacoustic imaging and photothermal therapy demonstrated the potential of the enhanced photothermal agents. Moreover, the concept of generating new cross‐relaxation pathways between different materials is proposed to contribute to the design of all kinds of enhanced photothermal agents. A bolt from the blue: Prussian blue (PB) has been coated on NaNdF4 nanoparticles to fabricate core–shell nanocomplexes with new cross‐relaxation pathways between the ladder‐like energy levels of Nd3+ ions and the continuous energy band of PB. This approach results in a dramatic increase in the photothermal conversion efficiency. In vivo photoacoustic imaging and photothermal therapy demonstrated the potential of the nanocomplexes.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201904534