“AIE+ESIPT” bis Schiff-base ligands with multicolor emission and their corresponding Eu(III) complexes: Synthesis and properties research

Hu, Zhongqian; Deng, Qingyou; Jiang, Zuyao; Guo, Zuping; Guo, Dongcai

doi:10.1016/j.jlumin.2019.116929

Cited by 14 publications

(4 citation statements)

References 37 publications

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“…The vibration frequency is lowered, so the absorption peak shifts to a high frequency. [ 31 ] Measured values of the molar conductivity were in the range 17–22 S cm 2. mol −1 , and indicated that the above materials were nonelectrolytes, [ 32 ] and that there were no free nitrates in the complex molecule and it had successfully participated in coordination.…”

Section: Resultsmentioning

confidence: 99%

Novel intramolecular charge transfer effect‐based ligands and aggregation‐induced emission‐active europium complexes: synthesis, characterization, and fluorescence properties

Yang

Guo

et al. 2020

Luminescence

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Two novel coumarin derivatives and the corresponding europium complexes were prepared using a simple procedure. The pH response of the ligand and the aggregation‐induced emission (AIE) properties of the target europium complex were studied. The ligand had an intramolecular charge transfer (ICT) effect and was linearly and sharply responsive under acidic conditions. The goal europium complexes exhibited excellent AIE performance when subjected to increasing concentrations of target europium complex or proportion of poor solvent. The effect of substituents on fluorescence strength or thermogravimetric and electrochemical properties was further investigated. The target complexes displayed the typical fluorescence of europium. The fluorescence amplitude of the target europium complexes was enhanced by the addition of electron‐donating groups to ligands. Thermogravimetric research findings indicated that the target complexes possessed extreme thermal stability. Electrochemistry discovery findings indicated that the highest occupied molecular orbit energy level of EuL1 was greater than EuL2, but the lowest unoccupied molecular orbit energy level was smaller than that of EuL2. These complexes could be applied in medicinal chemistry, substance chemistry, and fluorescence labelling areas.

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Section: Resultsmentioning

confidence: 99%

Novel intramolecular charge transfer effect‐based ligands and aggregation‐induced emission‐active europium complexes: synthesis, characterization, and fluorescence properties

Yang

Guo

et al. 2020

Luminescence

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“…The phenolic OH groups showed peak at 15.80 and 16 ppm. Furthermore, the aromatic protons appeared as multiplets and were observed between 7.02-8.58 ppm [10,30].…”

Section: H-nmr and 13 C-nmr Analysismentioning

confidence: 99%

Synthesis, characterizations, crystal structure, inhibition effects and theoretical study of novel Schiff base on the corrosion of carbon steel in 1 M HCl

Boukazoula

Haffar²,

Bourzami³

et al. 2022

Journal of Molecular Structure

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“…Among the large variety of developed molecules, the majority of the compounds were based on imidazoles, thiazoles, oxazoles, Schiff base and azo-units. [4,2,[13][14][15][16][17][18][19][20] Interestingly, for the ESIPT-fluorophores, tautomerism occurs only in the excited state but not in the ground state. This can be attributed to the instability of the keto-isomer as it loses the aromaticity of the aryl unit in the ground state.…”

Section: Introductionmentioning

confidence: 99%

ESIPT‐Active Pyrene‐imidazole Fluorophores: GSIPT, Dual Solid‐ and Solution‐State Emission plus Counter‐Intuitive Crystal Packing**

Venkatareddy,

Kumar,

Singh

et al. 2023

ChemPhotoChem

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We report a new excited‐state intramolecular proton transfer (ESIPT)‐inspired hydroxyl (OH)‐substituted pyrene‐imidazole that promote unprecedented intramolecular proton transfer in the ground state (GSIPT). The enol and keto isomers are in equilibrium, with a high keto‐isomer component in the solid state. In conjunction with DFT calculations, the photophysical studies and crystal structure analysis shred substantial evidence for the ground state transformation. The ESIPT‐active compounds also show the rare feature of high dual solution (φf=70 %) and solid state (φf=41 %) emission characteristics and counter‐intuitive stronger intermolecular interactions in the solid state versus the ESIPT‐inactive counterparts.

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“AIE+ESIPT” bis Schiff-base ligands with multicolor emission and their corresponding Eu(III) complexes: Synthesis and properties research

Cited by 14 publications

References 37 publications

Novel intramolecular charge transfer effect‐based ligands and aggregation‐induced emission‐active europium complexes: synthesis, characterization, and fluorescence properties

Novel intramolecular charge transfer effect‐based ligands and aggregation‐induced emission‐active europium complexes: synthesis, characterization, and fluorescence properties

Synthesis, characterizations, crystal structure, inhibition effects and theoretical study of novel Schiff base on the corrosion of carbon steel in 1 M HCl

ESIPT‐Active Pyrene‐imidazole Fluorophores: GSIPT, Dual Solid‐ and Solution‐State Emission plus Counter‐Intuitive Crystal Packing**

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