Ultra-wideband-responsive photon conversion through co-sensitization in lanthanide nanocrystals
Zhao Jiang,
Liangrui He,
Zhiwen Yang,
Huibin Qiu,
Xiaoyuan Chen,
Xujiang Yu (yuxuj1017@sjtu.edu.cn) and
Wanwan Li (wwli@sjtu.edu.cn)
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Zhao Jiang: Shanghai Jiao Tong University
Liangrui He: Shanghai Jiao Tong University
Zhiwen Yang: Shanghai Jiao Tong University
Huibin Qiu: Shanghai Jiao Tong University
Xiaoyuan Chen: National University of Singapore
Xujiang Yu: Shanghai Jiao Tong University
Wanwan Li: Shanghai Jiao Tong University
Nature Communications, 2023, vol. 14, issue 1, 1-10
Abstract:
Abstract Distinctive upconversion or downshifting of lanthanide nanocrystals holds promise for biomedical and photonic applications. However, either process requires high-energy lasers at discrete wavelengths for excitation. Here we demonstrate that co-sensitization can break this limitation with ultrawide excitation bands. We achieve co-sensitization by employing Nd3+ and Ho3+ as the co-sensitizers with complementary absorptions from the ultraviolet to infrared region. Symmetric penta-layer core-shell nanostructure enables tunable fluorescence in the visible and the second near-infrared window when incorporating different activators (Er3+, Ho3+, Pr3+, and Tm3+). Transient spectra confirm the directional energy transfer from sensitizers to activators through the bridge of Yb3+. We validate the features of the nanocrystals for low-powered white light-emitting diode-mediated whole-body angiography of mice with a signal-to-noise ratio of 12.3 and excitation-regulated encryption. This co-sensitization strategy paves a new way in lanthanide nanocrystals for multidirectional photon conversion manipulation and excitation-bandwidth-regulated fluorescence applications.
Date: 2023
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Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-36510-3
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DOI: 10.1038/s41467-023-36510-3
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