Elimination of Photon Quenching by a Transition Layer to Fabricate a Quenching‐Shield Sandwich Structure for 800 nm Excited Upconversion Luminescence of Nd3+‐Sensitized Nanoparticles
Elimination of Photon Quenching by a Transition Layer to Fabricate a Quenching‐Shield Sandwich Structure for 800 nm Excited Upconversion Luminescence of Nd3+‐Sensitized Nanoparticles
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DOI：
10.1002/adma.201304903
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发表时间：
2013-12
影响因子：
29.4
通讯作者：
Y. Zhong;Gan Tian;Zhanjun Gu;Yijun Yang;Lin Gu;Yuliang Zhao;Ying Ma;J. Yao
中科院分区：
文献类型：
--
作者：
Y. Zhong;Gan Tian;Zhanjun Gu;Yijun Yang;Lin Gu;Yuliang Zhao;Ying Ma;J. Yao
报道了 Nd3+ 敏化猝灭屏蔽三明治结构的上转换纳米颗粒，该纳米颗粒在 800 nm 连续波激光的激发下表现出高效的上转换光致发光。过渡层结构对于桥接从敏化剂到活化剂的能量转移并同时阻止从活化剂到敏化剂的能量反向转移至关重要。这些 800 nm 激发的上转换纳米粒子是开发用于生物应用的上转换纳米磷光体的关键一步。
Nd3+-sensitized quenching-shield sandwich-structured upconversion nanoparticles are reported, which exhibit highly efficient upconversion photoluminescence under excitation by an 800 nm continuous-wave laser. The transition-layer structure is essential to bridge energy transfer from the sensitizer to the activator and simultaneously block energy back-transfer from the activator to the sensitizer. These 800 nm-excited upconversion nanoparticles are a key step toward the development of upconversion nanophosphors for biological applications.