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Enhanced thermal effect of plasmonic nanostructures confined in discoidal porous silicon particles

机译：增强位于盘状多孔硅颗粒中的等离子体纳米结构的热效应

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The design of plasmonic nanostructures could have many exciting applications since it enhances or provides valuable control over efficient energy conversion. A three-dimensional (3D) space is a realistic hotspot matrix harvesting a wide conversion that has been shown in zero-dimensional nanoparticles, one-dimensional linear structures, or two-dimensional films. A novel 3D plasmonic nanostructure platform consisting of plasmonic metal nanoparticles in discoidal porous silicon particles is used in this study. Plasmonic gold nanoparticles are anchored inside the discoidal porous silicon (DPS) particles by in situ reduction synthesis. The novel plasmonic nanostructures can tailor the plasmon band and overcome the instability of photothermal materials. The “trapping well” for the anchored nanoparticles in 3D space can result in a huge change of plasmonic band of metal nanoparticles to the near-IR region in a novel 3D geometry. A multifunctional scaffold, Au–DPS particle, composed of doxorubicin conjugated to poly-( L -glutamic acid) (pDOX), was developed for combinatorial chemo-photothermal cancer therapy. The therapeutic efficacy was examined in treatment of the A549 cell line under near-IR laser irradiation. The highly efficient photothermal conversion can also be demonstrated in the laser desorption/ionization time-of-flight mass spectrometry detection analysis. The limit of detection was obviously improved in the detection of angiotensin II, P14R, and ACTH fragments 18-39 peptides. Overall, we envision that Au–DPS particles may be used in ultrasensitive theranostics in the future.
机译：等离子体纳米结构的设计可以具有许多令人兴奋的应用，因为它增强或提供了有价值的对有效的能量转换的控制。三维（3D）空间是逼真的热点矩阵，其收获宽的转换，该转换已经以零维纳米颗粒，一维线性结构或二维膜示出。该研究中使用了由盘状多孔硅颗粒中的等离子体金属纳米粒子组成的新型3D等离子体纳米结构平台。通过原位还原合成，等离子体金纳米颗粒在盘形多孔硅（DPS）颗粒内锚定。新型等离子体纳米结构可以定制等离子体带并克服光热材料的不稳定性。用于3D空间的锚定纳米颗粒的“捕获良好”可能导致金属纳米颗粒的巨大变化在新的3D几何形状中的近红外区域。为组合化疗 - 光热癌疗法开发了由与聚 - （L-乙醇）（PDOX）缀合的多柔比星组成的多功能支架AU-DPS颗粒。检查近红外激光照射下A549细胞系的治疗疗效。在激光解吸/电离飞行时间质谱检测分析中也可以证明高效的光热转化。在血管紧张素II，P14R和ACTH片段18-39肽的检测中明显改善了检测极限。总的来说，我们想想在未来在超声静脉内颗粒中使用AU-DPS颗粒。

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