Hydrothermal synthesis, crystal structure, and lunimescence properties of a new zinc complex containing the 2-Propyl-1H-imidazole-4,5-dicarboxylate and water ligands

Reticular three-dimensional 3d–4f frameworks constructed through substituted imidazole-dicarboxylate: syntheses, luminescence and magnetic properties study

“…The maximum peak of complex 3 is slightly redshifted with respect to that of the free H 3 mimda ligand, which is mainly due to an intraligand π→π* transition 31 upon comparison with a simple zinc complex. 32 Interestingly for 3, the emission is not the characteristic emission of an Er(III) ion, but originates from the H 3 mimda ligand. 33 Upon maximum excitation at 389 nm, complex 1 displays emission peaks at 911, 1032 and 1342 nm in the NIR range, which is attributed to the 4 F 3/2 → 4 I 9/2 , 4 F 3/2 → 4 I 11/2 and 4 F 3/2 → 4 I 13/2 characteristic transitions of a Nd(III) ion, 34 respectively.…”

“…43 Interestingly, this is different from simple Zn complexes, and it is less intense than that of the Dy-Zn complex. 32 This may originate from the deactivation of Co(II) as the paramagnetic cation, resulting in fluorescence quenching. 42 Among emission peaks, the Ln-Co complex exhibits the strongest emission in the green region, originating from the 4 F 9/2 → 6 H 13/2 transition, 44 which is particularly suitable for generating green light emission.…”

Three Coordination Polymers Built by Methoxyphenyl Imidazole Dicarboxylate: Solvothermal Syntheses, Crystal Structures, and Properties

“…To thoroughly understand the coordination features of H 3 IDC and its derivatives, some imidazole dicarboxylate derivatives bearing 2-position substituent units including methyl, ethyl, propyl, phenyl, or pyridyl groups have been explored recently. [17,[21][22][23][24][25][26][27][28][29][30][31][32] According to the related experiences gathered before, it will be highly feasible to introduce additional groups on the basis of the original ligands to obtain more desirable multifunctional linkers. In general, modification can cause little effect on the ligands that is beneficial for the predictability of the final structures.…”

“…In general, modification can cause little effect on the ligands that is beneficial for the predictability of the final structures. [17,[21][22][23][24][25][26][27][28][29][30][31][32] As well known, bulky aromatic groups are regarded as valuable tools to tune structures, not just because bulky ligands usually lead to large pores and surface areas, but even more importantly, the aromatic groups can supply additional p-p interactions and tend to generate high-dimensional structures, which can create much more beautiful structured CPs. More recently, our group has designed and prepared a similar imidazole dicarboxylate ligand, 2-p-methoxyphenyl-1H-imidazole-4,5-dicarboxylic acid (p-H 3 MOPhIDC) with a bulky aromatic group, to extend the related studies.…”