Fine-tuning emission color of aggregation-induced emission-active Ir(III) phosphors through simple ligand modification

Mao, Huiting; Yang, Yang; Zhao, Kai-Yue; Duan, Ying-Chen; Song, Weilin; Shan, Guo‐Gang; Su, Zhong‐Min

doi:10.1016/j.dyepig.2021.109439

Cited by 8 publications

(6 citation statements)

References 57 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Compounds with a tendency to aggregation-induced emission (AIE) are sought after, mainly due to the possibility of their wide application in organic electronics, i.e., OLEDs or cellular imaging [2]. Sometimes an insignificant change of properties allows AIE-gens to be obtained [47][48][49][50]. Therefore, as part of the work, we present research on the properties of compounds in the aggregated state.…”

Section: Photoluminescence In Aggregated Statementioning

confidence: 99%

Luminescence and Electrochemical Activity of New Unsymmetrical 3-Imino-1,8-naphthalimide Derivatives

et al. 2021

View full text Add to dashboard Cite

A new series of 1,8-naphtalimides containing an imine bond at the 3-position of the naphthalene ring was synthesized using 1H, 13C NMR, FTIR, and elementary analysis. The impact of the substituent in the imine linkage on the selected properties and bioimaging of the synthesized compounds was studied. They showed a melting temperature in the range of 120–164 °C and underwent thermal decomposition above 280 °C. Based on cyclic and differential pulse voltammetry, the electrochemical behavior of 1,8-naphtalimide derivatives was evaluated. The electrochemical reduction and oxidation processes were observed. The compounds were characterized by a low energy band gap (below 2.60 eV). Their photoluminescence activities were investigated in solution considering the solvent effect, in the aggregated and thin film, and a mixture of poly(N-vinylcarbazole) (PVK) and 2-tert-butylphenyl-5-biphenyl-1,3,4-oxadiazole (PBD) (50:50 wt.%). They demonstrated low emissions due to photoinduced electron transport (PET) occurring in the solution and aggregation, which caused photoluminescence quenching. Some of them exhibited light emission as thin films. They emitted light in the range of 495 to 535 nm, with photoluminescence quantum yield at 4%. Despite the significant overlapping of its absorption range with emission of the PVK:PBD, incomplete Förster energy transfer from the matrix to the luminophore was found. Moreover, its luminescence ability induced by external voltage was tested in the diode with guest–host configuration. The possibility of compound hydrolysis due to the presence of the imine bond was also discussed, which could be of importance in biological studies that evaluate 3-imino-1,8-naphatalimides as imaging tools and fluorescent materials for diagnostic applications and molecular bioimaging.

show abstract

Section: Photoluminescence In Aggregated Statementioning

confidence: 99%

Luminescence and Electrochemical Activity of New Unsymmetrical 3-Imino-1,8-naphthalimide Derivatives

et al. 2021

View full text Add to dashboard Cite

show abstract

“…The resulting precipitate was collected by filtration and washed with EtOH to obtain a dark crystal solid (1.30 g, yield 89%). 1 H NMR (400 MHz, CDCl 3 ): d = 7.37 (d, J = 8.4 Hz, 4H, BrPh-H), 7.28 (d, J = 7.8 Hz, 2H, Ph-H), 7.19 (t, J = 7.5 Hz, 4H, Ph-H), 7.10 (d, J = 8.4 Hz, 4H, BrPh-H), 6.90 (d, J = 7.6 Hz, 4H, Ph-H) ppm; 13 Synthesis of compound 3b. A solution of KOH (0.05 g, 0.89 mmol) in ethanol (2 mL) was added dropwise into a mixture of 1,3-bis(4-bromophenyl)propan-2-one (1.0 g, 2.7 mmol) and benzil (0.57 g, 2.7 mmol) in 20 mL ethanol.…”

Section: Methodsmentioning

confidence: 99%

“…Then the two target compounds were synthesized by a Suzuki-Miyaura cross-coupling reaction with reasonable yields. These structures were characterized by 1 H and 13 C-NMR spectroscopy, and high-resolution mass spectrometry (Fig. S1-S18, ESI †).…”

Section: Synthesis and Characterizationmentioning

confidence: 99%

“…[1][2][3][4][5] The family of AIE luminogens (AIEgens) is constantly growing with the synthesis of multiple types of AIE systems, such as small molecular AIEgens, 6 AIE co-crystals, 7,8 AIE polymers, [9][10][11] and metal-complex AIEgens. [12][13][14] Small molecular AIEgens are still the focus in aggregate science due to their accurate and simple structures, interpretable luminescence mechanism and structure-property relationships. 3 A series of prototypical AIEgens, including hexaphenylsilole (HPS), 15 tetraphenylethene (TPE), 16 and 10,10 0 ,11,11 0 -tetrahydro-5,5 0 -bidibenzo[a,d] [7]annulenylidene (THBA), 17 have opened up new avenues for the exploration of their wider potential by evading the notorious aggregation-caused quenching (ACQ) effect in the solid state.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Position-dependent hexaarylbenzene AIEgens: synthesis, characterization and optical properties

Zhao,

Yang,

et al. 2024

New J. Chem.

View full text Add to dashboard Cite

show abstract

“…The introduction of a heavy atom into the molecular system removes the restriction and significantly increases the efficiency of phosphorescence, which directs investigations in this area to using transition-metal complexes as luminogens in order to create highly efficient solid-state phosphorescent materials. However, despite the scientists’ obvious interest, studies in this area are in their infancy and very limited examples of organometallic luminogens are currently known. − …”

Section: Introductionmentioning

confidence: 99%

Just Add the Gold: Aggregation-Induced-Emission Properties of Alkynylphosphinegold(I) Complexes Functionalized with Phenylene–Terpyridine Subunits

et al. 2021

View full text Add to dashboard Cite

A series of organometallic complexes containing an alkynylphosphinegold(I) fragment and a phenylene–terpyridine moiety connected together by flexible linker have been prepared using the specially designed terpyridine ligands. The compounds were studied crystallographically to reveal that all of them contain a linearly coordinated Au(I) atom and a free terpyridine moiety. The different orientations of the molecules relative to each other in the solid state determine the multiple noncovalent interactions such as antiparallel ππ stacking, CH−π, and CH–Au, but no aurophilic interactions are realized. The organometallic Au(I) complexes obtained show fluorescence in the solution and dual singlet–triplet emission in the solid state. This means that their photophysical behavior is determined by both intermolecular lattice-defined interactions and Au(I) atom introduction. Density functional theory computational analysis supported the assignment of emission to intraligand electronic transitions only inside the phenylene–terpyridine part with no Au(I) involved. In addition, a study of the nature of the excited states for the “dimer” with an antiparallel orientation of the terpyridine fragment showed that this orientation leads to the generation of abstracted singlet and triplet states, lowering their energy in comparison with the monomer complex. Thus, the complexes obtained can be qualified as examples of Au(I)-containing organometallic aggregation-induced-emission luminogens.

show abstract

Fine-tuning emission color of aggregation-induced emission-active Ir(III) phosphors through simple ligand modification

Cited by 8 publications

References 57 publications

Luminescence and Electrochemical Activity of New Unsymmetrical 3-Imino-1,8-naphthalimide Derivatives

Luminescence and Electrochemical Activity of New Unsymmetrical 3-Imino-1,8-naphthalimide Derivatives

Position-dependent hexaarylbenzene AIEgens: synthesis, characterization and optical properties

Just Add the Gold: Aggregation-Induced-Emission Properties of Alkynylphosphinegold(I) Complexes Functionalized with Phenylene–Terpyridine Subunits

Contact Info

Product

Resources

About