4,4'-Dimethyl-2,2'-bipyridyl (CAS 1134-35-6) is a bipyridine derivative carrying electron-rich methyl groups at the 4 and 4' positions. It serves mainly as a starting material for preparing organometallic sensitizer dyes used in dye-sensitized solar cells (DSSCs). Ossila supplies it as a pale pink powder with purity above 98% by 1H NMR.
As a bipyridine, the compound binds strongly to metal centres as a chelating ligand in coordination compounds. In DSSC dyes, its organometallic complexes lengthen the bridging ligand, which improves electron-hole separation and lowers charge recombination, helping overall device efficiency. Dyes built on this ligand have been linked to efficient light harvesting and better charge transfer at the TiO2–dye and dye–hole transport interfaces.
The molecule is also employed in electrochemiluminescence (ECL) materials, where its donor character as an α-diimine ligand raises ECL intensity.
- Starting material for synthesizing organometallic photosensitizer dyes for dye-sensitized solar cells.
- Chelating ligand for metal centres in coordination compounds.
- Preparation of ruthenium-based sensitizers aimed at reducing charge recombination in DSSCs.
- Fabrication of electrochemiluminescence (ECL) materials with enhanced emission intensity.
- Heterocyclic building block and intermediate for semiconductor synthesis.
| Brand | Ossila |
|---|---|
| CAS number | 1134-35-6 |
| Molecular formula | C12H12N2 |
| Purity | >98% (1H NMR) |
| Category | — |
| Pack sizes | 10 g, 25 g |
| Physical form | Pale pink powder |
| Storage | — |
- Product code: B1491
- Molecular Weight: 184.24 g/mol
- Synonyms: 2,2′-Bi(γ-picoline), 4,4′-Dimethyl-2,2′-bipyridine
- Classification / Family: Bipyridyl derivatives, Semiconductor synthesis intermediates, Heterocyclic building blocks, Dye-sensitized solar cells (DSSCs)
- Melting Point: 169 - 174 °C
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