Selective Detection of Hg²⁺ Ion Using Upconversion Luminescent Nanoparticles

Terbium Tetra‐Sulfosalicylate Complex as Quantitative Luminescent Sensing of Chromate Ions with High Selectivity and Sensitivity

“…The excitation peak for Tb(SSA) 4 in Figure is located at 300–400 nm, and centered at 361 nm, and is assigned as a contribution of the SSA ligand. Simultaneously, the maximum absorption of CrO 4 2− occurs at 370 nm, which significantly overlaps the excitation spectrum of Tb(SSA) 4 to afford a very close interpeak distance of 9 nm, which is far better than some reports . The transition‐allowed LMCT is well‐known to have high transition and conversion efficiencies.…”

“…Lanthanide nanomaterials and complexes play important roles in inorganic chemistry and materials science fields, because of their unique spectroscopic properties and 4f electronic orbital being shielded by the 5s 2 and 5p 6 shells . Lanthanide luminescence has attracted tremendous interest for use in lanthanide liquid crystal displays, electroluminescent materials, biological imaging, multiphoton‐excitation probes, and luminescence sensing, resulting in potential applications in electroluminescent devices, magnetic resonance imaging (MRI) agents, solar‐energy‐conversion devices, or luminescence‐response probes for biological testing .…”

ENGINEERING THE NaYF4:Yb3+/Tm3+ UPCONVERSION NANOPARTICLE LUMINESCENCE ENERGY TRANSFER FOR A RATIOMETRIC pH INDICATOR

“…Since the luminescence of UCNP@SiO2-HPTS was also expected to appear at 520 nm, the pH monitoring can be observed from separation bands at 450, 475, and 520 nm. The luminescence energy transfer from UCNP to organic dye or another nanomaterial has been reported (Li et al, 2012;Zayakhuu et al, 2015;Sun et al, 2009), and a number of multifunctional biosensors have been developed for applications in biological sensing and labeling. Relative to that of the previous NaYF4:Yb 3+ A good overlap exists between the emission bands of NaYF4:Yb 3+ /Tm 3+ UCNP and the absorption band of HPTS at ~450 nm (Figure 5a), which efforts efficient energy transfer from NaYF4:Yb 3+ /Tm 3+ UCNP to HPTS, in which the UCNP donor emits light and the HPTS acceptor absorbs it (Ma et al, 2015).…”

A single-cell based mass cytometry study on heterogeneous interactions between upconversion nanoparticles and human immune cells

“…Nanotechnology brings exciting new opportunities and features for their biomedical applications including cancer theragnostics, 1 nanomedicine, 2 bioimaging, 3 and biosensors. [4][5][6] Inorganic nanoparticles (NPs) can be easily functionalized to improve the stability, biocompatibility, biodistribution, and target specific characteristics. 7 Among these, fluorescence inorganic nanomaterials are mostly used in imaging, photodynamic therapy (PDT), 8 and sensors, 9 such as quantum dots (QDs), carbon dots (CDs), 10 heavy metalbased NPs, and organic polymers.…”