18494-73-0

Basic information

• Product Name: 5,5'-DIACETYL-2,2'-BITHIENYL
• Synonyms: SALOR-INT L164887-1EA;5,5'-DIACETYL-2,2'-BITHIENYL;1-[5-(5-acetylthiophen-2-yl)thiophen-2-yl]ethanone
• CAS NO: 18494-73-0
• Molecular Formula: C₁₂H₁₀O₂S₂
• Molecular Weight: 250.34
• Mol File: 18494-73-0.mol
• Article Data: 18

Chemical Properties

• Boiling Point: 445.9°Cat760mmHg
• Flash Point: 223.5°C
• Appearance: /
• Density: 1.272g/cm³
• CAS DataBase Reference: 5,5'-DIACETYL-2,2'-BITHIENYL(CAS DataBase Reference)
• NIST Chemistry Reference: 5,5'-DIACETYL-2,2'-BITHIENYL(18494-73-0)
• EPA Substance Registry System: 5,5'-DIACETYL-2,2'-BITHIENYL(18494-73-0)

Safety Data

• Hazardous Substances Data: 18494-73-0(Hazardous Substances Data)

Usage

General Description

5,5'-DIACETYL-2,2'-BITHIENYL is a chemical compound that belongs to the class of bithiophene derivatives. It is a highly fluorescent molecule with potential applications in organic light-emitting diodes (OLEDs), organic photovoltaics, and other optoelectronic devices. Due to its strong absorption and emission in the visible region, 5,5'-DIACETYL-2,2'-BITHIENYL has attracted attention for its use in organic semiconductors and materials for electronic applications. Its unique structural and electronic properties make it a promising candidate for future developments in the field of organic electronics and photonics.

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Relevant articles and documents

Oxidative Dimerization of Thiophenes and Furans bearing Electron-Withdrowing Substituents by Palladium Acetate

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Oxime ester photoinitiators containing five-membered heteroaromatic ring structure, and preparation and use thereof

The invention relates to oxime ester compounds containing a five-membered heteroaromatic ring structure and represented by the formula (I) and (II), wherein m, n, n', A1, A2, R1, R2, R3, R4, R5, R6, R6'R7 and R7' are defined in the specification. The compounds represented by the formula (I) and (II) have excellent light absorption at 350-450 nm, can initiate the polymerization of acrylate monomersat low concentration, and have excellent thermal stability in the acrylate monomers, are oxime ester photoinitiators good in stability and suitable for a UV-Vis LED light source. The invention also relates to preparation of the compounds represented by the formula (I) and (II) and a use of the compounds represented by the formula (I) and (II) as photoinitiators or photosensitizers.

Bis(dioxaborine) Dyes with Variable π-Bridges: Towards Two-Photon Absorbing Fluorophores with Very High Brightness

Bis(dioxaborine) dyes of the A-π-A format (A: acceptor, π: conjugated bridge) were prepared and photophysically characterized. The best performing dyes feature (a) visible-light absorption (>400 nm), (b) high molar absorption coefficients (up to 70000 m?1 cm?1), (c) Stokes shifts in the range of ca. 2500–5800 cm?1, and (d) strong fluorescence emission with quantum yields of up to 0.74. This yields very bright-emitting dyes for one-photon excitation. However, the most intriguing feature of the dyes is their strong two-photon absorption. This was achieved by means of increased π-conjugation in the phenylene or phenylene-thiophene bridges through the variation of the conjugation length and rigidity. This provided two-photon absorption cross sections of up to 2800 GM (1 Goeppert-Mayer (GM)=10?50 cm4 s photon?1). Considering the mentioned high fluorescence quantum yields, exceptionally bright-emitting A-π-A two-photon absorbing dyes with low molecular mass are obtained. Time-dependent density-functional theory calculations corroborated the experimental results.