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Generating New Cross‐Relaxation Pathways by Coating Prussian Blue on NaNdF 4 To Fabricate Enhanced Photothermal Agents
Author(s) -
Yu Zhongzheng,
Hu Wenbo,
Zhao Hui,
Miao Xiaofei,
Guan Yan,
Cai Weizheng,
Zeng Zhiping,
Fan Quli,
Tan Timothy Thatt Yang
Publication year - 2019
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201904534
Subject(s) - photothermal therapy , prussian blue , nanoparticle , materials science , coating , nanotechnology , photoacoustic imaging in biomedicine , relaxation (psychology) , photothermal effect , fluorescence , chemistry , electrode , electrochemistry , optics , psychology , social psychology , physics
Cross‐relaxation among sensitizers is commonly regarded as deleterious in fluorescent materials, although favorable in photothermal agents. Herein, we coated Prussian blue (PB) on NaNdF 4 nanoparticles to fabricate core–shell nanocomplexes with new cross relaxation pathways between the ladder‐like energy levels of Nd 3+ 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.