Synthesis, structure and luminescence properties of binary and ternary complexes of lanthanide (Eu 3+ , Sm 3+ and Tb 3+ ) with salicylic acid and 1,10-phenanthroline

Synthesis, Characterization, and Photocatalytic Activity of Mixed-Ligand Cerium(III) and Bismuth(III) Complexes

“…e red shifting of ligand peaks in complex (2) reflects the bathochromic effect and is also an indication for the metal-ligand coordination. e results of our study are in accordance with the reported absorption peaks of the 1,10-phenanthroline and salicylic acid at 280, 305, 330 nm and 265, 303, 320 nm, respectively, with slight shifting in their positions after coordinating with the metal [26].…”

“…Moreover, symmetric and asymmetric stretching vibrations of-COOH group of salicylic acid appearing at 1345 cm −1 has shifted to 1449 cm −1 upon the formation of the complexes. As established from the literature, this shifting indicates the formation of bond between oxygen atom of carboxyl functional group and metal atoms [25,26]. e absence of stretching vibrations of hydroxyl and nitrate groups in complexes ( 1) and ( 2) indicated the purity of synthesized complexes [22].…”

A europium-based MOF fluorescent probe for efficiently detecting Co2+ and CrO 4 2

“…However, few investigations have focused on developing fluorescent probes sensitive to Co 2+ ions. Herein, we synthesized a Eu-MOF, NH 4 [Eu(sal) 4 (phen) 2 ] (abbreviated as Eu-sal, sal = salicylic acid group, phen = 1,10-phenanthroline), whose application in fluorescence sensing has not been explored so far, although its crystal structure has been reported [31]. Therefore, we discussed its application as a fluorescence probe in the detection of typical metal ions and anions.…”

Efficient green-emitting Tb3+-doped di-ureasil coating phosphors for near-UV excited light-emitting diodes

“…As a result, Ln 3+ -based complexes with carboxylates could be regarded as prospective phosphors for lighting and display applications. In particular, aromatic carboxylic acids typically have strong absorption in the UV or near-UV spectral regions due to the delocalized π-electron system of aromatic rings and have been widely used to prepare Ln 3+ -based coordination polymers [14][15][16][17][18][19][20][21][22][23][24].…”

“…Among those complexes, examples involving hydroxybenzoic acids, especially salicylic acid (HSal) and their derivatives, already displayed promising luminescence features [21][22][23][24]. In what concerns processability, these complexes should be incorporated into solid-state matrices enabling easy film fabrication, which is a relevant property featuring the use of UV-LED.…”