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

  • Zhongzheng Yu
  • , Wenbo Hu
  • , Hui Zhao
  • , Xiaofei Miao
  • , Yan Guan
  • , Weizheng Cai
  • , Zhiping Zeng
  • , Quli Fan
  • , Timothy Thatt Yang Tan

Research output: Contribution to journalArticlepeer-review

87 Scopus citations

Abstract

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.

Original languageEnglish
Pages (from-to)8536-8540
Number of pages5
JournalAngewandte Chemie - International Edition
Volume58
Issue number25
DOIs
StatePublished - 17 Jun 2019

Keywords

  • cross-relaxation
  • dyes/pigments
  • electronic structure
  • nanostructures
  • photothermal agents

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