Study on the roughen process of branches of AuAg nanostars for the improved surface-enhanced Raman scattering (SERS) to detect crystal violet in fish

Post-synthetic modification of a covalent organic framework via a thiol–ene reaction for improving fluorescence detection and removal of cationic crystal violet carcinogenic dye

“…The main quantitative assays reported for CV are surface-enhanced Raman spectroscopy (SERS), 16,17 fluorescence assays by carbon dots, 18 electrospray ionization mass spectrometry (ESI-MS), 19 indirect competitive enzyme-linked immunosorbent assay (icELISA), 20 and loop-mediated isothermal amplification (LAMP). 21 Among them, the fluorescence method has been widely studied for its good selectivity and visualization capability.…”

Uniform and Dense Hotspots in Au Rough-Nanocube Monolayer for Sensitive and Reproducible SERS Detection

“…The plasmon-induced EM enhancement of these metal nanocrystals is significantly influenced by their shape, size, and morphology. − Many types of metal structures have been synthesized to facilitate efficient SERS detection, encompassing nanosphere, nanorods, nanotriangles, nanowire, and so on. − However, the high EM field intensity of these metal nanocrystals is predominantly located at the high-curvature surface due to the lightning rod effect; many flat surfaces on this structure have limited EM enhancement under light excitation, thereby leading to low SERS efficiency. Many efficient means have been proposed to optimize the EM enhancement of metal structures, including the growth of metal nanoparticles with rough surface, − the fabrication of branched gold nanostars, − and the construction of multilayered and hollow structures. , These approaches offer valuable insights for the design of metal nanocrystals with substantial EM enhancement and enhanced SERS sensitivity. Beyond the pursuit of ultrahigh SERS sensitivity, the signal reproducibility of the metal substrate is equally critical in SERS applications.…”