Nanoparticle luminescence thermometry
Nanoparticle luminescence thermometry
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DOI：
10.1021/jp026445m
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发表时间：
2002-10
影响因子：
3.3
通讯作者：
Shaopeng Wang;S. L. Westcott;Wei Chen
中科院分区：
文献类型：
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作者：
Shaopeng Wang;S. L. Westcott;Wei Chen
本文提出了一种利用发光纳米粒子测温的新概念。为了证明这一想法，已经研究了几种发光纳米颗粒的温度依赖性发射特性。结果表明，其中一些材料在室温以上具有良好的线性响应，可用于温度传感。半导体纳米颗粒的CdTe和掺杂的纳米颗粒的ZnS：Mn 2+显示出可逆的线性温度响应在生理温度范围内，并有潜力的生物医学测温。ZnS：Mn 2+，Eu 3+的双掺杂纳米颗粒对每种掺杂剂表现出不同的温度响应;它们的强度比提供了一种稳健的温度测量方法。纳米颗粒稳定剂的热不稳定性和纳米颗粒表面缺陷是一些纳米颗粒的不可逆热响应的可能原因。
A new concept of using luminescent nanoparticles for thermometry is described in this paper. To demonstrate this idea, the temperature-dependent emission characteristics of several luminescent nanoparticles have been investigated. The results show that some of them have a linear response above room temperature, which could be applied to temperature sensing. Semiconductor nanoparticles of CdTe and doped nanoparticles of ZnS:Mn2+ show a reversible linear temperature response over the physiological temperature range and have potential for biomedical thermometry. Double-doped nanoparticles of ZnS:Mn2+,Eu3+ show a different temperature response for each dopant; the ratio of their intensities provides a robust temperature measurement approach. Thermal instability of the nanoparticle stabilizer and nanoparticle surface defects is a possible reason for the irreversible thermal response of some nanoparticles.