Institute of Advanced Synthesis and School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Centre for Advanced Materials, Nanjing Tech University, 30 Puzhu South Road, Nanjing, 211816, P. R. China.
Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), School of Physical and Mathematical Sciences, Nanjing Tech University, Nanjing, 211800, P. R. China.
Angew Chem Int Ed Engl. 2020 Aug 17;59(34):14443-14448. doi: 10.1002/anie.202000474. Epub 2020 Jul 28.
The localized surface plasmon resonance (LSPR) of plasmonic nanomaterials is highly dependent on their structures. Going beyond simple shape and size, further structural diversification demands the growth of non-wetting domains. Now, two new dimensions of synthetic controls in Au-on-Au homometallic nanohybrids are presented: the number of the Au islands and the emerging shapes. By controlling the interfacial energy and growth kinetics, a series of Au-on-AuNR hybrid structures are successfully obtained, with the newly grown Au domains being sphere and branched wire (nanocoral). The structural variety allowed the LSPR to be fine-tuned in full spectrum range, making them excellent candidates for plasmonic applications. The nanocorals exhibit black-body absorption and outstanding photothermal conversion capability in NIR-II window. In vitro and in vivo experiments verified them as excellent photothermal therapy and photoacoustic imaging agents.
等离子体纳米材料的局域表面等离子体共振（LSPR）高度依赖于它们的结构。超越简单的形状和尺寸，进一步的结构多样化需要非润湿域的生长。现在，提出了金-金同金属纳米杂化中的两个新的合成控制维度：金岛的数量和新出现的形状。通过控制界面能和生长动力学，成功获得了一系列 Au-on-AuNR 杂化结构，新生长的 Au 域呈球形和分支线（纳米珊瑚）。结构的多样性允许在全光谱范围内对 LSPR 进行微调，使它们成为等离子体应用的优秀候选者。纳米珊瑚在近红外二区窗口表现出黑体吸收和出色的光热转换能力。体外和体内实验验证了它们作为优秀的光热治疗和光声成像剂的性能。
