1,5-Dibromonaphthalene (1,5-DBN, CAS 7351-74-8) is a dibromonaphthalene isomer supplied by Ossila as a building block for organic semiconductor synthesis. With bromine atoms at the 1 and 5 positions of the naphthalene core, it offers convenient reactive sites for building OLED, OFET and organic photovoltaic materials. It is produced by direct selective electrophilic substitution of 1-bromonaphthalene.
One documented use is the preparation of 1,5-di(anthracen-2-yl)naphthalene (1,5-DAN), a material combining strong blue solid-state emission with efficient charge transport. 1,5-DAN reaches a single-crystal mobility of up to 8.41 cm 2 V -1 s -1 and a photoluminescence quantum yield of up to 20.54%. Its blue emission arises from the large torsion angle between the substituents and the core, in contrast to analogues substituted at the 2,6-positions.
The material has a purity of >98% by 1H NMR, appears as a white to off-white powder or crystals, and melts at 130 °C. It is offered in 1 g, 5 g and 10 g packs.
- Building block for synthesising OLED emitter and charge-transport materials.
- Intermediate for organic field-effect transistor (OFET) semiconductors.
- Precursor for organic photovoltaic and low band gap polymer materials.
- Synthesis of blue-emitting naphthalene derivatives such as 1,5-DAN.
- Preparation of conjugated microporous polymers reported in the literature.
| Brand | Ossila |
|---|---|
| CAS number | 7351-74-8 |
| Molecular formula | C10H6Br2 |
| Purity | >98% (1H NMR) |
| Category | — |
| Pack sizes | 1 g, 5 g, 10 g |
| Physical form | White to off-white powder/crystals |
| Storage | — |
- Product code: B1231
- Molecular Weight: 285.97 g/mol
- Synonyms: 1,5-DBN
- Melting Point: 130 °C
- Classification / Family: Naphthalenes, Semiconductor synthesis intermediates, Low band gap polymers, OLED, OFETs, organic photovoltaics
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