Recent Advances and Synthetic Approaches of AuNRs for Sensing Applications Based on Different Aspect Ratios

Xi Hao, Jieling Qin
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Abstract

Gold nanorods (AuNRs), 1D rod-shaped nanomaterials, hold a crucial role in sensing applications due to their distinct physicochemical properties, such as high surface area, efficient mass transfer, good biocompatibility, and anisotropic optical and electronic responses. This review outlines the most recent advancements in AuNRs research, offering a comprehensive summary of synthetic strategies. Subsequently, the potential of AuNRs in sensor applications is discussed, and for the first time, an innovative analysis of their application in the sensor field based on the aspect ratio of AuNRs is proposed. These sensing systems are utilized for detecting heavy metal ions, inorganic anions, small biomolecules, protein tumor markers, enzymes, and nucleic acids. Finally, the future research directions and challenges of AuNRs are addressed.

Abstract Image

基于不同长宽比的传感应用 AuNRs 的最新进展和合成方法
金纳米棒(AuNRs)是一种一维棒状纳米材料,具有独特的物理化学特性,如高比表面积、高效传质、良好的生物相容性以及各向异性的光学和电子响应,因此在传感应用中发挥着至关重要的作用。本综述概述了 AuNRs 研究的最新进展,全面总结了合成策略。随后,讨论了 AuNRs 在传感器应用中的潜力,并首次提出了基于 AuNRs 长宽比的传感器应用创新分析。这些传感系统可用于检测重金属离子、无机阴离子、小生物分子、蛋白质肿瘤标记物、酶和核酸。最后,探讨了 AuNRs 未来的研究方向和挑战。
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