UCNPs@gelatin–ZnPc nanocomposite: synthesis, imaging and anticancer properties

Abstract

The core–shell structured NaGdF4:Yb,Er,Mn@NaGdF4:Yb@gelatin–ZnPc platform exhibits excellent anti-tumor efficiency due to an enhanced red emission induced improved photodynamic effect.

Integration of IR‐808 Sensitized Upconversion Nanostructure and MoS2 Nanosheet for 808 nm NIR Light Triggered Phototherapy and Bioimaging

“…Fourier transform infrared (FT‐IR) spectra of the sample in every step were measured to validate the successful preparations (Figure S6 (Supporting Information) and Figure E). The bands located at 1600–650 cm −1 for IR‐783 are attributed to vibrations of benzene rings, and some new bands of IR‐808 can be ascribed to the carboxylic groups on 4‐mercaptobenzoic acid (Figure S6, Supporting Information). As for OA‐UCNPs, the bands located at 1564 and 1463 cm −1 originate from the vibrations of the carboxylic groups.…”

UCNPs@Zn0.5Cd0.5S Core-Shell and Yolk-Shell Nanostructures: Selective Synthesis, Characterization, and Near-Infrared-Mediated Photocatalytic Reduction of Cr(VI)

“…42 nm in diameter have been prepared and used as NIR light nanotransducers ( Figure S1a, in the Supporting Information) [50]. The UCNPs@AA-Zn(Cd)[OH] 4− core-shell composites with 20 nm in shell thickness were synthesized by a modified process [33], as revealed by TEM image shown in Figure S1b Journal of Nanomaterials Figure 2(f), which is a little smaller than that of the (100) and (102) crystal plane of CdS nanostructures [43], confirming that the shell component is alloyed Zn x Cd 1-x S. The STEM and elemental mapping images including Zn, F, Cd, and Y are shown in Figures 2(g)-2(l), which further confirm that the yolk-shell nanoparticles with a shell consisted of elements of Zn, Cd, and S. X-ray diffraction (XRD) has been used to characterize the phase of the samples. All the sharper diffraction peaks (Figure 3(a)) coincide perfectly with the β-NaYF 4 (JCPDS no.…”

“…As for the UCNP/semiconductor composites, the fluorescence energy can be passed from UCNPs (donors) to semiconductors (acceptors) to broaden the scope of the spectral response of the semiconductor effectively. These composite materials exhibit encouraging therapeutic efficacy of photodynamic therapy and the photochemical oxidation of organic matter under irradiation of NIR light [43,44]. Many synthetic strategies including the epitaxial growth method, chemical assembly method, hydrothermal method, and electrospinning technique have been pioneered to fabricate UCNP-based Förster resonance energy transfer (FRET) nanostructures [45][46][47][48][49].…”

Spectral Characteristics of Mn2+ Doped Na5Lu9F32 Single Crystals

“…Single crystals have the advantage of high transmittance, high stability and high luminous efficiency for doped active center ions. The study of spectroscopic properties of Mn 2+ doped CdWO 4 and BeAl 2 O 4 single crystals has been reported earlier . Meanwhile, located at different matrices and substitution sites can introduce different luminescent properties for Mn 2+ ion.…”