Organometallic NPs

Diphenyl ditelluride assisted synthesis of noble metal-based silver-telluride 2D organometallic nanofibers with enhanced aggregation-induced emission (AIE) after oleylamine treatment

Silver-Telluride 2D organometallic nanofibers (NFs), using diphenyl ditelluride (DPDT) as a precursor, were synthesized. The synthesis was carried out by reacting DPDT with silver nitrate in acetonitrile at room temperature (RT) under an inert atmosphere. The resulting material was fully characterized using various techniques, including UV-VIS-NIR spectroscopy, steady-state and excited-state fluorescence spectroscopy, IR-FTIR-ATR spectroscopy, HR-ESI MS spectrometry, high-resolution transmission electron microscopy (HRTEM), BF-STEM or HAADF-STEM, confocal fluorescence microscopy images and conductivity measurements. Initially, the nanofibers were almost non-emissive. However, a remarkable modification was observed after treating the nanofibers with oleylamine under ultrasound treatment. This methodology induced an aggregation emission effect (AIE) in the solution and in the solid state, resulting in the formation of a highly red emissive fluorescent nanomaterial. This research provides valuable insights for developing new fluorescent materials with potential applications in various optical fields. Dyes and Pigments, 2023, 220, 111754.

See more at : https://doi.org/10.1016/j.dyepig.2023.111754

Synthesis and Characterization of PtTe₂ Multi-Crystallite Nanoparticles using Organotellurium Nanocomposites

Herein, we report the synthesis of new PtTe₂ multi-crystallite nanoparticles (NPs) in different sizes through an annealing process using new nanostructured Pt-Te organometallic NPs as a single source precursor. This precursor was obtained in a single reaction step using Ph₂Te₂and H₂PtCl₆ and could be successfully size controlled in the nanoscale range. The resulting organometallic composite precursor could be thermally decomposed in 1,5 pentanediol to yield the new PtTe₂ multi-crystallite NPs. The final size of the multi-crystallite spheres was successfully controlled by selecting the nanoprecursor size. The sizes of the PtTe₂ crystallites formed using the large spheres were estimated to be in the range of 2.5–6.5 nm. The results provide information relevant to understanding specific mechanistic aspects related to the synthesis of organometallic nanomaterials and nanocrystals based on platinum and tellurium. Scientific Reports, 2017, 7, 9889.

See more at: https://doi.org/10.1038/s41598-017-10239-8