Ultra-wideband-responsive photon conversion through co-sensitization in lanthanide nanocrystals.
Ultra-wideband-responsive photon conversion through co-sensitization in lanthanide nanocrystals.
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DOI：
10.1038/s41467-023-36510-3
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发表时间：
2023-02-14
影响因子：
16.6
通讯作者：
Li, Wanwan
中科院分区：
文献类型：
--
作者：
Jiang, Zhao;He, Liangrui;Yang, Zhiwen;Qiu, Huibin;Chen, Xiaoyuan;Yu, Xujiang;Li, Wanwan
稀土纳米晶体独特的上转换或下转换为生物医学和光子应用带来了希望。然而，任一过程都需要离散波长的高能激光进行激发。在这里，我们证明共敏化可以通过超宽激发带打破这一限制。我们通过使用Nd3+和Ho3+作为共敏化剂来实现共敏化，从紫外到红外区域具有互补的吸收。当结合不同的激活剂（Er3+、Ho3+、Pr3+ 和 Tm3+）时，对称五层核壳纳米结构可在可见光和第二近红外窗口中实现可调谐荧光。瞬态光谱证实了通过 Yb3+ 桥从敏化剂到活化剂的定向能量转移。我们验证了纳米晶体的特性，用于低功率白光发光二极管介导的小鼠全身血管造影，信噪比为 12.3，并具有激励调节加密。这种共敏化策略为稀土纳米晶体的多向光子转换操纵和激发带宽调节荧光应用开辟了一条新途径。作者报告了一种多离子共敏化策略，以实现镧系元素纳米晶体从紫外到近红外的超宽带响应光子转换。他们演示了基于白光的生物成像和信息加密的应用。
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. The authors report a multi-ion co-sensitization strategy to achieve ultra-wideband-responsive photon conversion of lanthanide nanocrystals from UV to NIR. They demonstrate applications for white light-based bioimaging and information encryption.
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影响因子：
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作者：
Guo L;Wang Y;Zhang J;Wang Y;Dong P
通讯作者：
Dong P
使用发光纳米晶体的可调寿命复用
影响因子：
35
作者：
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通讯作者：
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使用溶液处理的钙钛矿-稀土纳米传感器对 X 射线、紫外线和近红外光子进行宽带检测。
影响因子：
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作者：
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通讯作者：
Yang, Huanghao
影响因子：
46.9
作者：
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通讯作者：
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影响因子：
16.6
作者：
Zhang, Hongxin;Fan, Yong;Zhang, Fan
通讯作者：
Zhang, Fan