College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, China.
Molecules. 2022 Dec 10;27(24):8766. doi: 10.3390/molecules27248766.
Gold nanoparticles (AuNPs) with interesting optical properties have attracted much attention in recent years. The synthesis and plasmonic properties of AuNPs with a controllable size and shape have been extensively investigated. Among these AuNPs, gold nanotriangles (AuNTs) exhibited unique optical and plasmonic properties due to their special triangular anisotropy. Indeed, AuNTs showed promising applications in optoelectronics, optical sensing, imaging and other fields. However, only few reviews about these applications have been reported. Herein, we comprehensively reviewed the synthesis and self-assembly of AuNTs and their applications in recent years. The preparation protocols of AuNTs are mainly categorized into chemical synthesis, biosynthesis and physical-stimulus-induced synthesis. The comparison between the advantages and disadvantages of various synthetic strategies are discussed. Furthermore, the specific surface modification of AuNTs and their self-assembly into different dimensional nano- or microstructures by various interparticle interactions are introduced. Based on the unique physical properties of AuNTs and their assemblies, the applications towards chemical biology and sensing were developed. Finally, the future development of AuNTs is prospected.
近年来，具有有趣光学性质的金纳米粒子（AuNPs）引起了广泛关注。具有可控尺寸和形状的 AuNPs 的合成和等离子体特性已经得到了广泛的研究。在这些 AuNPs 中，金纳米三角（AuNTs）由于其特殊的三角形各向异性而表现出独特的光学和等离子体特性。事实上，AuNTs 在光电子学、光学传感、成像等领域表现出了广阔的应用前景。然而，只有少数关于这些应用的综述报道。在此，我们全面回顾了 AuNTs 的合成和自组装及其近年来的应用。AuNTs 的制备方案主要分为化学合成、生物合成和物理刺激诱导合成。讨论了各种合成策略的优缺点。此外，还介绍了 AuNTs 的特定表面修饰以及通过各种粒子间相互作用自组装成不同维度的纳米或微结构。基于 AuNTs 及其组装体的独特物理性质，开发了其在化学生物学和传感方面的应用。最后，对 AuNTs 的未来发展进行了展望。
