Review - Concept and Application of Thermal Phenomena at 4f Electrons of Trivalent Lanthanide Ions in Organic/Inorganic Hybrid Nanostructure
Review - Concept and Application of Thermal Phenomena at 4f Electrons of Trivalent Lanthanide Ions in Organic/Inorganic Hybrid Nanostructure
复制标题
综述-有机/无机杂化纳米结构中三价镧系离子4f电子热现象的概念与应用
DOI：
10.1149/2162-8777/ac2327
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发表时间：
2021
影响因子：
2.2
通讯作者：
Soga Kohei
中科院分区：
文献类型：
--
作者：
Okubo Kyohei;Umezawa Masakazu;Soga Kohei
三价镧系离子（Ln 3+）作为荧光活性中心主要存在于无机晶体或玻璃态固体中。在近红外光激发下，由于Ln 3+的电子-声子相互作用是弱耦合的，所以Ln 3+体系更容易产生热辐射，能隙更窄.多声子弛豫理论有助于定量地处理离子型无机固体中的热释放。然而，在生产Ln 3+掺杂纳米晶体的最新进展，需要替代的设计理念的Ln 3+为基础的纳米材料，表现出发光的有机或有机/无机混合系统。本文讨论了用电子-声子耦合的定量处理方法来处理Ln 3+掺杂纳米晶体周围有机分子的影响。我们的结论是，这种效果是基本上由周围分子的化学极性解释。本文综述了利用热吸收和发射的应用，包括激光冷却和测温，以及涉及Ln 3+热相互作用的生物光子应用，如纳米测温和光热治疗。
Trivalent lanthanide ions (Ln 3+) have been used as active centers for fluorescence mainly in inorganic crystalline or glassy solids. Ln 3+-containing systems allow easier thermal emission with narrower energy gaps under near-infrared light excitation because the Ln 3+ electron–phonon interaction is a weak coupling. The multiphonon relaxation theory helps to quantitatively deal with heat release in the ionic inorganic solids. Recent advances in producing Ln 3+-doped nanocrystals, however, are demanding alternative design concepts for Ln 3+-based nanomaterials that exhibit luminescence in organic or organic/inorganic hybrid systems. In this paper we discuss the approach for dealing with the effect of organic molecules that surround the Ln 3+-doped nanocrystals with the quantitative treatment of electron–phonon coupling. We conclude that this effect is substantially explicable by the chemical polarity of surrounding molecules. This paper reviews applications using thermal absorption and emission including laser cooling and thermometry, as well as biophotonic applications involving the thermal interaction of the Ln 3+ such as nanothermometry and photothermal therapy.