Two New NIR Luminescencent Er(III) Coordination Polymers with Potential Application Optical Amplification Devices

Electrochemical Evaluation of Titanium (IV) Oxide/Polyacrylonitrile Electrospun Discharged Battery Coals as Supercapacitor Electrodes

“…In general, it was observed that PAN and PAN+TiO 2 nanofiber structures formed similar peaks in terms of having common PAN groups. The peak is observed at 3737.37 cm −1 belongs to OH stretching vibrations [40, 41]. The peak corresponding to 2938.98 cm −1 can be attributed to aliphatic C−H vibrations [42].…”

Recent Advances of Near-Infrared (NIR) Emissive Metal Complexes Bridged by Ligands with N- and/or O-Donor Sites

“…Carboxyl group, the oxygen-containing functional group, occupies an important position in coordination chemistry because it has abundant coordination patterns and can form stable complexes. In the study of NIR light-emitting complexes with bridging ligands, carboxyl compounds are also a very important type of bridging ligand, and a large number of complexes using carboxyl groups for bridging have been synthesized [14,52,[58][59][60][61][62][63]. Usually, the metal atoms involved in the coordination and the carboxyl group form coordination bonds in the same plane.…”

“…In addition, the NIR emission spectra of these three complexes in MeOH at room temperature were obtained. The results showed that they exhibited excellent NIR emissive properties at 863, 1060, and 1328 nm, which are typical emission of Nd 3+ originating from the 4 However, the metal complexes with polycarboxyl compounds as ligands are easy to form coordination polymers and metal-organic frameworks (MOFs) because of the super coordination ability of carboxyl oxygen atoms [58,[60][61][62]. For instance, Erkarslan group and Feng group synthesized 1D chain polymer with near-infrared luminescence using modified polycarboxylic acid compounds 34 and 35 (Figure 10) in coordination with lanthanide ions, respectively (Figure 12) [60,62].…”