Synthesis of EuS and EuSe particles via thermal decomposition of dithio- and diselenophosphinate europium complexes

A Novel Strategy to Synthesize Dual Blue Fluorescent‐Magnetic EuCl2 Nanocrystals via One‐Pot Method with Controlled Morphologies Using Urea

“…Note that the formed EuCl 2 NCs stretched to extremely long fibers with about 1325.8 nm without the presentation of urea (Figure D). It can be explained that after the reaction temperature up to 170 °C, urea kept slowly releasing ammonia gas, which was the essential reductant to reduce Eu III to Eu II nucleus . That is, the ammonia gas content was decided by the introduced urea amount, as well as the formation quantity of the Eu‐nucleus.…”

“…It can be explained that the avoided oxygen and H 2 O from the ammonia gas may affect the NCs formation during the reducing progress of Eu III . Besides, as in many reports OLA was used not only as a capping ligand but also as a reducing agent in the NCs synthesis, a contrast reaction without OLA and OA was carried out. Figure C,D is the TEM image and luminescent spectra of the resultant product, respectively.…”

“…A lot of these researches focused on the trivalent state europium (Eu III ) with special optical properties because of their active 4f electrons . Compared to Eu III compounds, divalent state europium nanocrystals (Eu II NCs) with excellent magnetic and luminescent characters have drawn great attention lately . These advanced materials could be applied in many fields of optical isolators, magneto‐optic devices, catalysis, bioimaging, solar cells, etc.…”

“…These advanced materials could be applied in many fields of optical isolators, magneto‐optic devices, catalysis, bioimaging, solar cells, etc. So far, reports on Eu II NCs are mainly on europium chalcogenides, EuX (X = O, S, Se), of which morphology is controlled by the reaction temperature or surface ligand . In 2018, Hierarchical Europium (II) oxide tubes were firstly prepared with native ferromagnetism .…”

Quantitative Assessment of the Atom Radii of Chemical Elements Based on Spectral Analysis Data

“…that are capable of forming bonds with each other [5][6][7][8]. Such dimensions are typical for the main biological structures: cells, their components (organelles) and molecules, complex inorganic compounds examined in recent scientific publications [9][10][11]. Taking into account significance and rapid advancement of nanotechnologies, we decided to provide a quantitative assessment of atom radii for different chemical elements in this publication.…”