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具有可调节近红外IIb寿命的格子工程兰化物纳米晶体

Feng Ren¹, Feng Wu^1,2, Sisi Ling¹

¹CAS Key Laboratory of Nano-Bio Interface, Jiangsu Key Laboratory of Organoid Engineering and Precision Medicine, Division of Nanobiomedicine and i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, China.

Angewandte Chemie (International ed. in English)

|August 25, 2025

概括

我们设计了化物纳米晶体 (LnNC) 带有应变等级的网格, 显著增强它们的近红外IIb光学特性,

科学领域:

材料科学
纳米技术
光学物理

背景情况:

化物纳米晶体 (LnNC) 的格子工程是光学属性调节的关键.
通过格子工程操纵下转化特征是未经探索的.

研究的目的:

从扭曲到应变等级的LnNC网格设计.
研究格子应变对降低转换和近红外IIb (NIR-IIb) 寿命的影响.
探索时间解析多重生物成像中的应用.

主要方法:

制造空位控制的β-NaxGdF3+x:Yb,A (A = Tm/Er,x = 0.5,0.75,1) 纳米晶体.
CaF2沉积到工程格子结构 (扭曲到应变等级).
在NIR-IIb区域 (1500-1700 nm) 进行光学特性和寿命测量.

主要成果:

具有高音频能量增强多音频轨道-晶格放松 (MPR) 的压力级晶格.
Er3+/ Tm3+的NIR- IIb寿命延长了2至4倍.
经过指数调整的CaF2增长的NIR-IIb寿命 (Tm3+:0.746.28毫秒;Er3+:0.0559.2毫秒).

结论:

压力分级格子有效地提高了MPR,并延长了LnNC中的NIR-IIb寿命.
CaF2沉积可以精确控制LnNC的光学特性.
已开发的LnNC显示出时间解析多重生物成像的前景.

关键词:

兰化物纳米晶体网格工程多重化生物成像 NIR-IIb使用寿命语音能量

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