“金属核—J-聚集体壳”结构球形层状纳米粒子邻域的光学与热效应
Optical and thermal effects in the neighborhood of the spherical layered nanoparticle of the "metallic core -- J-aggregate shell'' structure
AI总结：
本文推导了金属核—J-聚集体壳纳米粒子的极化率关系，揭示其吸收、散射、加热和电场增强均呈现三个杂化等离激元-激子共振峰，并探讨了其在肿瘤光热治疗中的应用。
摘要：
本文获得了涂覆有菁染料壳层的金属纳米粒子极化率的关系式。研究了光吸收效率与散射效率、复合纳米粒子的加热以及其邻域内电场增强的频率依赖性。结果表明，所有这些依赖关系均具有三个极大值，它们对应于杂化等离激元-激子共振的频率。研究表明，纳米粒子中金属含量的增加会导致可见光谱区极大值发生蓝移，并使紫外频率范围内的极大值发生红移。本文还研究了金属-有机纳米粒子在纳米医学中的应用问题，特别是用于恶性肿瘤的光热治疗。
英文摘要：
The relations for the polarizability of the metallic nanoparticles, coated with the shell of cyanine dyes, are obtained in the article. The frequency dependencies for light absorption and scattering efficiencies, the heating of the composite nanoparticle and the electric field amplification in its neighborhood are studied. It is established that all the dependencies have three maxima which correspond to the frequencies of hybrid plasmon-exciton resonance. It is shown that an increase in content of metal in the nanoparticle causes a blue shift of the maxima from the visible part of the spectrum and a red shift of the maximum from ultraviolet frequency range. The issue of application of metal-organic nanoparticles in nanomedicine, in particular for the photothermal therapy of malignant neoplasms is studied.
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