899422-06-1

Basic information

• Product Name: 2-Bromospiro[9H-fluorene-9,9'-[9H]xanthene]
• Synonyms: 2-Bromospiro[9H-fluorene-9,9'-[9H]xanthene];2-Bromospir[fluorene-9,9'-xanthene];2-bromospiro[fluorene-9,9'- xanthene]
• CAS NO: 899422-06-1
• Molecular Formula: C25H15BrO
• Molecular Weight: 411.29
• EINECS: 1592732-453-0
• Mol File: 899422-06-1.mol
• Article Data: 14

Chemical Properties

• Melting Point: 255 °C
• Boiling Point: 513.8±39.0 °C(Predicted)
• Appearance: /
• Density: 1.54±0.1 g/cm3(Predicted)
• Storage Temp.: Sealed in dry,Room Temperature
• CAS DataBase Reference: 2-Bromospiro[9H-fluorene-9,9'-[9H]xanthene](CAS DataBase Reference)
• NIST Chemistry Reference: 2-Bromospiro[9H-fluorene-9,9'-[9H]xanthene](899422-06-1)
• EPA Substance Registry System: 2-Bromospiro[9H-fluorene-9,9'-[9H]xanthene](899422-06-1)

Safety Data

• Safety Statements: 24/25
• Hazardous Substances Data: 899422-06-1(Hazardous Substances Data)

Usage

General Description

2-Bromospiro[9H-fluorene-9,9'-[9H]xanthene] is an organic chemical compound included in the spiro-compound category, characterized by a unique structural format where two rings share a single atom. With molecular formula C26H15BrO, this spirocyclic compound is often used in the field of organic synthesis and pharmaceuticals because of its reactivity and distinct properties. Additional detailed information about this chemical, such as its physical and chemical properties, safety measures, or handling instructions, would typically be found in its Material Safety Data Sheet (MSDS).

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Relevant articles and documents

A Yellow-Emitting Homoleptic Iridium(III) Complex Constructed from a Multifunctional Spiro Ligand for Highly Efficient Phosphorescent Organic Light-Emitting Diodes

To suppress concentration quenching and to improve charge-carrier injection/transport in the emission layer (EML) of phosphorescent organic light-emitting diodes (PhOLEDs), a facial homoleptic iridium(III) complex emitter with amorphous characteristics was designed and prepared in one step from a multifunctional spiro ligand containing spiro[fluorene-9,9′-xanthene] (SFX) unit. Single-crystal X-ray analysis of the resulting fac-Ir(SFXpy)3 complex revealed an enlarged Ir···Ir distance and negligible intermolecular π-π interactions between the spiro ligands. The emitter exhibits yellow emission and almost equal energy levels compared to the commercial phosphor iridium(III) bis(4-phenylthieno[3,2-c]pyridinato-N,C2′)acetylacetonate (PO-01). Dry-processed devices using a common host, 4,4′-bis(N-carbazolyl)-1,1′-biphenyl, and the fac-Ir(SFXpy)3 emitter at a doping concentration of 15 wt % exhibited a peak performance of 46.2 cd A-1, 36.3 lm W-1, and 12.1% for the current efficiency (CE), power efficiency (PE), and external quantum efficiency (EQE), respectively. Compared to control devices using PO-01 as the dopant, the fac-Ir(SFXpy)3-based devices remained superior in the doping range between 8 and 15 wt %. The current densities went up with increasing doping concentration at the same driving voltage, while the roll-offs remain relatively low even at high doping levels. The superior performance of the new emitter-based devices was ascribed to key roles of the spiro ligand for suppressing aggregation and assisting charge-carrier injection/transport. Benefiting from the amorphous stability of the emitter, the wet-processed device also exhibited respectful CE, PE, and EQE of 32.2 cd A-1, 22.1 lm W-1, and 11.3%, respectively, while the EQE roll-off was as low as 1.7% at the luminance of 1000 cd m-2. The three-dimensional geometry and binary-conjugation features render SFX the ideal multifunctional module for suppressing concentration quenching, facilitating charge-carrier injection/transport, and improving the amorphous stability of iridium(III)-based phosphorescent emitters.

Nondoped deep-blue spirofluorenexanthene-based green organic semiconductors (GOS) via a pot, atom and step economic (PASE) route combining direct arylation with tandem reaction

Effective synthesis of organic semiconductors with pot, atom, and step economic (PASE) methods will be an indispensable part of green electronics. In this paper, we combined direct arylation with one-pot/tandem reaction to synthesize a green organic semiconductor (GOS), di(spiro[fluorene-9,9′-xanthene]-2-yl)-1,2,4,5-tetrafluorobenzene (DSFX-TFB), serving as the emitting layer for organic light-emitting devices (OLEDs). The maximum current efficiency (CE) of 3.2 cd A-1, power efficiency (PE) of 2.0 lm W-1 and external quantum efficiency (EQE) of 4.1% were obtained with the CIE coordinates (0.15, 0.08) in the nondoped deep-blue OLEDs. Meanwhile, good energy transfer and device performances with maximum CE of 8.03 cd A-1 and PE of 4.62 lm W-1 were achieved in typical sky-blue fluorescent OLEDs using DSFX-TFB as host and p-bis(p-N,N-diphenyl-aminostyryl)benzene (DSA-Ph) as dopant material. This work provides a PASE synthetic route for GOSs and eco-friendly materials.

DELAYED FLUORESCENT COMPOUND, AND ORGANIC LIGHT EMITTING DIODE AND ORGANIC LIGHT EMITTING DISPLAY DEVICE INCLUDING THE SAME

The disclosure provides a delayed fluorescent compound of the Formula and an organic light emitting diode including a first electrode, a second electrode and an organic emitting layer between the first and second electrodes, where the delayed fluorescent

Spirofluorenexanthenyl derivatives and organic electroluminescent device including the same

The present invention provides an organic compound represented by the following chemical formula a. In the above formula, R1 to R3, L, x, Ar1 and Ar2 are as defined in claims of the invention.