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Relevant academic research and scientific papers

An easily accessible aggregation-induced emission probe for lipid droplet-specific imaging and movement tracking

Lipid droplets (LDs) as dynamic organelles are associated with many metabolic processes. Ideal fluorescent probes for LD-specific imaging require excellent specificity, superior brightness, fast cell permeability, and easy preparation. However, convention

Selected drug-likeness properties of 2-arylidene-indan-1,3-dione derivatives—chemical compounds with potential anti-cancer activity

2-Arylidene-indan-1,3-done derivatives have very different properties, thanks to which they find various applications in science, medicine, and industry. Selected derivatives show antivi-ral, antibacterial, and anti-inflammatory activity. This paper prese

Tuning the solid-state emission of small push-pull dipolar dyes to the far-red through variation of the electron-acceptor group

Series of solid-state emitters based on the D-π-A dipolar structure and featuring various electron-donor and electron-acceptor groups were designed, and their spectroscopic properties studied. From weak emission in dilute solutions, intense emissions in aggregated state (AIE) and in the crystalline state were obtained. Analysis in light of crystal structures obtained by X-ray diffraction revealed specific crystal packing and presence of long chain of emitting aggregates. This simple molecular engineering around the D-π-A dipolar structure provides easy access to a wide range of effective solid-state emitters allowing modulation of emission wavelengths up to the near infrared (λem reaching 735 and 768 nm for compound 2f and 3f bearing the strongest electron-withdrawing group).

Synthesis of tunable, red fluorescent aggregation-enhanced emissive organic fluorophores: Stimuli-responsive high contrast off-on fluorescence switching

Triphenylamine (TPA) and N-methylbarbituric acid/indanedione-based donor-acceptor derivatives were synthesized and demonstrated molecular conformation and packing dependent tunable fluorescence from yellow to red in the solid state. TPA with N-methylbarbi

Study of Red-Emission Piezochromic Materials Based on Triphenylamine

Two conjugated molecules based on triphenylamine and 1,3-indandione have been synthesized by employing Knoevenagel condensation. Both materials demonstrated aggregation-induced emission behavior, and solvato- and piezochromic properties. These red lumines

PURIFICATION METHOD FOR ORGANIC COMPOUND, PHOTOELECTRIC CONVERSION ELEMENT, PHOTOSENSOR AND ORGANIC ELECTROLUMINESCENT ELEMENT

PROBLEM TO BE SOLVED: To provide a purification method capable of enhancing yield of sublimation purification of an organic compound used for a photoelectric conversion element having enhanced light response speed and an organic electroluminescent element having low deriving voltage and exhibiting excellent external quantum efficiency and purity of a purified product. SOLUTION: An organic compound having 10% weight loss temperature of 265°C or more at vacuum degree of 1×10-2 Pa or less, such as compound 1 is applied to a heating cleaning purification treatment to set the content of a solvent in the organic compound at 0.2 mass or less, then the organic compound is sublimation purified. COPYRIGHT: (C)2016,JPOandINPIT

Synthesis, electronic, and electro-optical properties of emissive solvatochromic phenothiazinyl merocyanine dyes

Phenothiazinyl merocyanine dyes with variable substitution patterns on the peripheral benzene ring were synthesized in good yields by Knoevenagel condensation of the corresponding phenothiazinyl aldehydes and N-methylrhodanine or indan-1,3-dione. The electronic properties were investigated by cyclic voltammetry, absorption, electro-optical absorption, and emission spectroscopy. All these merocyanines reveal reversible redox behavior that stems from the phenothiazinyl-centered oxidation to give stable radical cations. The redox potentials strongly correlate with Hammett σp parameters. All merocyanines reveal large Stokes shifts. They also display a pronounced emissive solvatochromism, which is caused by large dipole moment changes upon excitation from the ground to the excited state. These findings are supported by solvatochromism studies and time-dependent DFT computations. A dye-ing breed: Phenothiazinyl-merocyanine dyes with variable substitution patterns on the peripheral benzene ring were synthesized in good yields by Knoevenagel condensation of the corresponding phenothiazinyl aldehydes and N-methylrhodanine or indan-1,3-dione. Their electronic properties were investigated by various methods (see figure). Copyright