A new europium fluorous metal–organic framework with pentafluorobenzoate and 1,10-phenanthroline ligands: Synthesis, structure and luminescent properties

Highly Luminescent, Water‐Soluble Lanthanide Fluorobenzoates: Syntheses, Structures and Photophysics, Part I: Lanthanide Pentafluorobenzoates

“…Therefore, in our work we focus on an investigation of the syntheses, structures, and photophysical properties of lanthanide fluorobenzoates with different degrees of fluorination. Herein, we selected pentafluorobenzoates[ Ln(pfb) 3 (H 2 O) x ], in which the ligand has the maximum degree of fluorination, as the starting point of our study.T hey are noted to emit in both the visible and IR ranges, [17][18][19][20][21][22][23] but the published data are incomplete and contradictory.B y using this example, we developed am ethodological approach for the investigation of these compounds and revealed the main patternso ft heir structural and luminescentbehavior.…”

Molecular and Polymer Ln2M2 (Ln = Eu, Gd, Tb, Dy; M = Zn, Cd) Complexes with Pentafluorobenzoate Anions: The Role of Temperature and Stacking Effects in the Structure; Magnetic and Luminescent Properties

“…The presence of the phen ligand result in an increase in sensitization efficiency due to more favorable energies of its excited states. Moreover, the absence of high-frequency oscillating bonds achieved by the presence of a d -block provide a significantly longer lifetime of the europium excited state regardless of the presence of phen as a ligand [ 5 ]. Since terbium luminescence is less susceptible to quenching due to a larger energy gap between the lowest excited state and the highest ground state levels, the lifetime difference between heteronuclear and homonuclear terbium compounds is less significant [ 42 ].…”

“…Luminescent lanthanide complexes attracted much attention because of their potential applications in biomedical imaging, catalysis [ 1 ], quantum computing technics [ 2 ], magnetic refrigerators [ 3 ], sorbents [ 4 ], luminescent sensors, and fluorescent probes [ 5 ]. The narrow bandwidth of the f-f transitions, the long luminescence lifetime (~ms) and the presence of high magnetic anisotropy determine the interest in the studies being carried out and the prospects for practical applications.…”

“…A special role in the formation of complexes with anions of fluorinated carboxylic acids and aromatic N-donor ligands is played by π-π interactions between the aromatic fragments of heteroligans, which additionally stabilize the crystal structure [ 27 , 28 , 29 ]. Additionally, fluorinated carboxylic acids are involved in the formation of C-H...F and C...F, F...F contacts, which also affect the stability of the crystal packing of the complexes [ 5 , 30 , 31 , 32 ]. These intra- and intermolecular interactions can positively affect the luminescent properties of the resulting complexes [ 33 , 34 , 35 ].…”

Crystal engineering of heterocyclic arylene(ethynylene) oligomers through programmed aromatic stacking

“…Reported examples of intermolecular stacking interactions between perfluoroarenes and heteroarenes include thiophene, 43,44 furan, [45][46][47] and imidazole, 48 while stacking appears less likely between electron deficient units such as pyridine. [49][50][51][52] Combining the power of the ArF-ArH cofacial interaction in designing solidstate packing with the prevalence of various heteroarenes in the highest-performance conjugated materials reveals the importance of understanding how heteroarene structure influences ArF-ArH interactions.…”