728911-52-2

Basic information

• Product Name: 1,3,2-Dioxaborolane, 2,2'-(9,9'-spirobi[9H-fluorene]-2,7-diyl)bis[4,4,5,5-tetramethyl-
• Synonyms: 1,3,2-Dioxaborolane, 2,2'-(9,9'-spirobi[9H-fluorene]-2,7-diyl)bis[4,4,5,5-tetramethyl-;2,7-Bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-9,9'-spirobi[9H-fluorene];2,2'-(9,9'-spirobi[9H-fluorene]-2,7-diyl)bis[4,4,5,5-tetramethyl-1,3,2-Dioxaborolane
• CAS NO: 728911-52-2
• Molecular Formula: C₃₇H₃₈B₂O₄
• Molecular Weight: 568.31722
• Mol File: 728911-52-2.mol
• Article Data: 12

Chemical Properties

• Melting Point: 332 °C
• Boiling Point: 682.8±55.0 °C(Predicted)
• Appearance: /
• Density: 1.20±0.1 g/cm3(Predicted)
• CAS DataBase Reference: 1,3,2-Dioxaborolane, 2,2'-(9,9'-spirobi[9H-fluorene]-2,7-diyl)bis[4,4,5,5-tetramethyl-(CAS DataBase Reference)
• NIST Chemistry Reference: 1,3,2-Dioxaborolane, 2,2'-(9,9'-spirobi[9H-fluorene]-2,7-diyl)bis[4,4,5,5-tetramethyl-(728911-52-2)
• EPA Substance Registry System: 1,3,2-Dioxaborolane, 2,2'-(9,9'-spirobi[9H-fluorene]-2,7-diyl)bis[4,4,5,5-tetramethyl-(728911-52-2)

Safety Data

• Hazardous Substances Data: 728911-52-2(Hazardous Substances Data)

Usage

General Description

1,3,2-Dioxaborolane, 2,2'-(9,9'-spirobi[9H-fluorene]-2,7-diyl)bis[4,4,5,5-tetramethyl- is a chemical compound that is used as a building block for organic synthesis. It contains a boron atom and a spirobi[9H-fluorene] unit, which can be used to create complex organic molecules. The tetramethyl groups on the molecule provide sterically hindered protection, making the compound stable and reactive. 1,3,2-Dioxaborolane, 2,2'-(9,9'-spirobi[9H-fluorene]-2,7-diyl)bis[4,4,5,5-tetramethyl- is often utilized in medicinal chemistry, material science, and as a reagent in organic reactions due to its unique structure and properties.

Upstream product

• 171408-84-7 2,7-dibromo-9,9'-spirobi[fluorene] 
• 73183-34-3 bis(pinacol)diborane 
• 82214-69-5 2-biphenylmagnesium bromide 
• 171408-85-8 9-((1,1'-biphenyl)-2-yl)-2,7-dibromo-9H-fluoren-9-ol 
• 14348-75-5 2,7-dibromofluorene-9-one 
• 61676-62-8 2-Isopropoxy-4,4,5,5-tetramethyl-1,3,2-dioxaborolane 

Downstream Products

• 1274238-88-8 2,7-di-(4-amino-3-nitrophenyl)-9,9'-spirobifluorene 
• 1274238-90-2 2,7-di-(3,4-diaminophenyl)-9,9'-spirobifluorene 
• 728911-51-1 C₄₇H₃₂N₄O₂ 
• 728911-50-0 C₄₇H₃₂N₄O₂ 
• 728911-49-7 C₅₃H₄₄N₄O₂ 

Relevant articles and documents

Long-Lived and Highly Efficient TADF-PhOLED with “(A)n–D–(A)n” Structured Terpyridine Electron-Transporting Material

The electron-transporting material (ETM) is one of the key factors to determine the efficiency and stability of organic light-emitting diodes (OLEDs). A novel ETM with a “(Acceptor)n–Donor–(Acceptor)n” (“(A)n–D–(A)n”) structure, 2,7-di([2,2′:6′,2″-terpyridin]-4′-yl)-9,9′-spirobifluorene (27-TPSF), is synthesized by combining electron-withdrawing terpyridine (TPY) moieties and rigid twisted spirobifluorene, in which the TPY moieties facilitate electron transport and injection while the spirobifluorene moiety ensures high triplet energy (T1 = 2.5 eV) as well as enhances glass transition temperature (Tg = 195 °C) for better stability. By using tris[2-(p-tolyl)pyridine]iridium(III) (Ir(mppy)3) as the emitter, the 27-TPSF-based device exhibits a maximum external quantum efficiency (ηext, max) of 24.5%, and a half-life (T50) of 121, 6804, and 382 636 h at an initial luminance of 10 000, 1000, and 100 cd m?2, respectively, which are much better than the commercialized ETM of 9,10-bis(6-phenylpyridin-3-yl)anthracene (DPPyA). Furthermore, a higher efficiency, a ηext, max of 28.2% and a maximum power efficiency (ηPE, max) of 129.3 lm W?1, can be achieved by adopting bis(2-phenylpyridine)iridium(III)(2,2,6,6-tetramethylheptane-3,5-diketonate) (Ir(ppy)2tmd) as the emitter and 27-TPSF as the ETM. These results indicate that the derivative of TPY to form “(A)n–D–(A)n” structure is a promising way to design an ETM with good comprehensive properties for OLEDs.

Frequency-Upconverted Stimulated Emission by Up to Six-Photon Excitation from Highly Extended Spiro-Fused Ladder-Type Oligo(p-phenylene)s

Frequency-upconverted fluorescence and stimulated emission induced by multiphoton absorption (MPA) have attracted much interest. As compared with low-order MPA processes, the construction of high-order MPA processes is highly desirable and rather attracti

Dopant-Free Hole-Transporting Polymers for Efficient and Stable Perovskite Solar Cells

A series of novel polymers (P1-P6) derived from the combination of different units (including thiophene, triarylamine, and spirobifluorene) were successfully synthesized, completely characterized, and used as hole-transporting materials (HTMs) for perovskite solar cells (PSCs). Solar cells with some of these materials as HTMs showed very good performances of almost 13% (12.75% for P4 and 12.38% for P6) even without additives, and devices based on these new HTMs show relatively improved stability against temperature compared to those based on PTAA. The presence of dopant additives has been linked to long-term degradation, which is the main barrier to the large-scale commercialization of this innovative type of solar cell. Obtaining efficient PSCs without using dopants could represent a further step toward improvement of long-term stability and thus their introduction into the market.