923192

Spiro-TTB

≥99% (HPLC)

• Synonym(s): 2,2′,7,7′- Tetrakis(N,N′-di-p-methylphenylamino)-9,9′-spirobifluorene, 2,2′,7,7′-Tetra(N, N-di-tolyl)amino-spiro-bifluorene, 2,2′,7,7′-Tetra(N,N-di-p-tolyl)amino-9,9-spirobifluorene, 2,2′,7,7′-Tetra(N,N-ditolylL)amino-9,9-spiro-bifluorene, 2,2′,7,7′-Tetrakis(di-p-tolylamino)-9,9′-spirobi[fluorene], 2,2′,7,7′-Tetrakis(di-p-tolylamino)spiro-9,9′-bifluorene, N²,N²,N²′,N²′,N⁷,N⁷,N⁷′,N7^′-Octa-p-tolyl-9,9′-spirobi[fluorene]-2,2′,7,7′-tetraamine
• Empirical Formula (Hill Notation): C₈₁H₆₈N₄
• CAS Number: 515834-67-0
• Molecular Weight: 1097.43
• MDL number: MFCD28968052
• NACRES: NA.23

Properties

• description: PL:409 nm (in THF); TGA:> 360 °C (0.5% weight loss); Tg: 146 °C
• Quality Level: 100
• assay: ≥99% (HPLC)
• mol wt: average mol wt 1097.43 g/mol
• greener alternative product characteristics: Design for Energy Efficiency; Learn more about the Principles of Green Chemistry.
• sustainability: Greener Alternative Product
• loss: 0.5% TGA, >360°C
• transition temp: T_g 146 °C
• solubility: THF: soluble
• λmax: 385 nm in THF
• orbital energy: HOMO 5.2 eV ; LUMO 1.9 eV
• greener alternative category: , Enabling

Description

General description

We are committed to bringing you Greener Alternative Products, which adhere to one or more of The 12 Principles of Greener Chemistry. This product belongs to enabling category of greener alternatives, and has been enhanced for energy efficiency. Click here for more information.

Application

Spiro-TTB is a high-mobility organic semiconductor with strong donor character given its four substituted arylamine moieties that stabilize positively charged cationic states via mesomeric effects.
It has been successfully applied as transparent hole-transparent layer in solar cells, organic field-effect transistors (OFETs), and organic light emitting devices (OLEDs). In photovoltaics, spiro-TTB was used as organic hole selective layer between perovskite and the silicon cells, contributing to a 25.2% efficency perovskite/ silicon tandem solar cell. When used in OLEDs, spiro-TTB enabled applications in organic photodetectors (OPDs), imaging and lasing applications.

Spiro-TTB is used as a hole transport material in OLED devices, organic photovoltaics (OPVs), organic field-effect transistors (OFETs) and perovskite solar cells. It exhibits excellent hole injection and transport properties, enabling efficient charge transport from the anode to the emitting layers of the OLED structure. This contributes to improved device performance, stability, and overall efficiency.

Safety Information

• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 3
• flash_point_f: Not applicable
• flash_point_c: Not applicable