Synthesis, photophysical, electrochemical and electroluminescence studies of red emitting phosphorescent Ir(III) heteroleptic complexes

Ali, Farman; Nayak, Pabitra K.; Periasamy, N.; Agarwal, Neeraj

doi:10.1007/s12039-017-1350-y

Cited by 6 publications

(2 citation statements)

References 29 publications

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“…Therefore, the precise, sensitive, selective and accurate detection of these compounds is important. Sensing techniques such as gas chromatography-mass spectrometry (GC-MS), Ion mobility spectroscopy (IMS), Raman spectroscopy and metal detectors are some of the methods, already in use 7 , 8 , 9 , 10 . Amongst these techniques fluorescence spectroscopy is more attractive.…”

Section: Introductionmentioning

confidence: 99%

Review: Fluorophores for detecting Nitroaromatic Compounds, Picric Acid

Ahmed¹,

Ali²

2023

IJMRA

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Section: Introductionmentioning

confidence: 99%

Review: Fluorophores for detecting Nitroaromatic Compounds, Picric Acid

Ahmed¹,

Ali²

2023

IJMRA

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“…The energy of the excited states of these emitters depends upon both the β-diketonate and the heterocycle. It is well-known that the presence of fluorine substituents at the phenyl group of an ortho -metalated 2-phenylpyridine ligand generates a blueshift with regard to the unsubstituted chromophore, , while the replacement of phenylpyridine by phenylisoquinoline produces a redshift. , …”

Section: Introductionmentioning

confidence: 99%

Insertion of Unsaturated C–C Bonds into the O–H Bond of an Iridium(III)-Hydroxo Complex: Formation of Phosphorescent Emitters with an Asymmetrical β-Diketonate Ligand

et al. 2020

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Structural Analysis of Complexes 4, 5, and 7 S3 Computational Details S5 Energies of Optimized Structures S5 UV-vis Spectra of Complexes 4-7 (Observed and Calculated) S9 Analysis of Computed UV/Vis Data for 4-7 S10 Cyclic Voltammograms of Complexes 4-7 S15 Theoretical Analysis of Molecular Orbitals of Complexes 4-7 S16 Normalized Excitation and Emission Spectra of Complexes 4-7 S25 NMR Spectra of Complexes 2-7 S29 References S42 S3 Experimental Section: General Information. All reactions were carried out with rigorous exclusion of air using Schlenk-tube techniques. Solvents were dried by the usual procedures and distilled under argon prior to use or obtained oxygen-and water-free from an MBraun solvent purification apparatus. C, H, and N analyses were carried out in a Perkin-Elmer 2400B SeriesII-Analyzer. High-resolution (HRMS) were acquired using a MicroTOF-Q hybrid quadrupole time-of-flight spectrometer (Bruker Daltonics, Bremen, Germany). MALDI-TOF mass spectra were acquired using a Bruker Autoflex III, MALDI-TOF/TOF equipped with a DCTB matrix. IR spectra were measured using a PerkinElmer Spectrum 100 FT-IR spectrometer, equipped with an ATR accessory, as pure solids. 1 H and 13 C{ 1 H} NMR spectra were recorded on a Bruker Avance 300 or 400 MHz instrument. Chemical shifts (expressed in parts per million) are referenced to residual solvent peaks. Coupling constants J are given in hertz. UV-visible spectra were registered on an Evolution 600 spectrophotomer. Steady-state photoluminescence spectra were recorded on a Jobin-Yvon Horiba Fluorolog FL-3-11 spectrofluorimeter. Lifetimes were measured using an IBH 5000F coaxial nanosecond flash lamp. Quantum yields were measured using the Hamamatsu Absolute PL Quantum Yield Measurement System C11347-11. Cyclic voltammetry measurements were performed using a Voltalab PST050 potentiostat with Pt wire as working electrode, Pt wire as counter electrode, and saturated calomel (SCE) as reference electrode. The experiments were carried out under argon in dichloromethane or acetonitrile solutions (10-3 M), with Bu 4 NPF 6 as supporting electrolyte (0.1 M). Scan rate was 100 mV s-1. The potentials were referenced to the ferrocene/ferrocenium (Fc/Fc +) couple. Preparation of [Ir(μ-Cl)(κ 2-C,N-C 6 H 4-isoqui) 2 (1). A suspension of [Ir(μ-Cl)(η 2-COE) 2 ] 2 (500 mg, 0.56 mmol) in 10 mL of 2-ethoxyethanol was treated with 1phenylisoquinoline (470 mg, 2.30 mmol) and the mixture was refluxed for 12 h. The resulting suspension was filtered and the red solid was washed with diethyl ether (3 x 10 mL). Yield: 620 mg (87%). 1 H NMR (300 MHz, CD 2 Cl 2 , 298 K): δ 9.00 (m, 4H), 8.20 (d,

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Emissive lead(II) benzenedicarboxylate metal-organic frameworks

Peedikakkal

Qamar

2018

J Chem Sci

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Two known Pb(II) metal-organic frameworks (MOFs), pseudo-supramolecular isomeric pairs synthesized namely, [Pb 3 (BDC) 3 (DMF) 3.5 ] (1) and [Pb(BDC)(H 2 O)] (2) (where BDC = benzenedicarboxylate) were synthesized and reexamined their structures to determine the topology of the networks. In that 1 displayed a 3D (10,3)-b linked network with having the ths topology whereas 2 shows a (6,3) 2D layers interconnected to a 3D framework structure. Remarkably, the desolvation of both 1 and 2 cause structural transformation to a known 3D network structure of [Pb(BDC)] n (3) as established by X-ray powder diffraction patterns. Photoluminescence studies in the solid-state at room temperature of 1-3 compounds exhibit interesting luminescence close to white light region due to ligand-to-metal charge-transfer (LMCT).

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Synthesis, photophysical, electrochemical and electroluminescence studies of red emitting phosphorescent Ir(III) heteroleptic complexes

Cited by 6 publications

References 29 publications

Review: Fluorophores for detecting Nitroaromatic Compounds, Picric Acid

Review: Fluorophores for detecting Nitroaromatic Compounds, Picric Acid

Insertion of Unsaturated C–C Bonds into the O–H Bond of an Iridium(III)-Hydroxo Complex: Formation of Phosphorescent Emitters with an Asymmetrical β-Diketonate Ligand

Emissive lead(II) benzenedicarboxylate metal-organic frameworks

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