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Product Code B1301-10g
Price £150 ex. VAT

A double brominated naphthalene intermediate

Used for the construction of molecules in application of optical memory transistors, air pollution and organic electronic devices.


Specifications | MSDS | Literature and Reviews


2,7-Dibromonaphthalene (2,7-DBN), CAS number 58556-75-5, is one of many double brominated naphthalenes that has a symmetrical structure along the the  joining carbons. It has been used as an intermediate for constructing semiconducting molecules in application of OLEDs and OFETs, and polymers for OPVs and air pollution applications.

Organic semiconductor of 2,7-di(anthracen-2-yl)naphthalene, with a naphthalene and two anthracene pendants at 2,7-positions , exhibits excellent hole-transport mobility of 3.3 cm2 V-1 s-1. It also shows a high photoresponsivity of 8000 A W-1 with detectivity as high as 1.2 × 1014 Jones [1]. Apart from that, different from traditional strategies towards memory devices, optical memory transistors (OMTs) based on 2,7-di(anthracen-2-yl)naphthalene display an excellent memory effect due to the inhomogeneity of the film only.

Nanotube air filters based on conjugated microporous polymers (CMPs) block type aerogel which are derived from 2,7-dibromonaphthalene are used in the purification of dusty air. The filters can take up to 172.73 wt% gaseous iodine and exhibit their potential as bifunctional filtration materials for capturing both particulate matter (PM) and volatile substances [2].

General Information


CAS Number 58556-75-5
Chemical Formula C10H6Br2
Full Name 2,7-Dibromonaphthalene
Molecular Weight 285.97 g/mol
Synonyms 2,7-DBN
Classification / Family Naphthalenes, Semiconductor synthesis intermediates, Low band gap polymers, OLED, OFETs, organic photovoltaics

Chemical Structure


2,7-Dibromonaphthalene chemical structure, CAS 58556-75-5
2,7-Dibromonaphthalene (2,7-DBN) chemical structure, CAS 58556-75-5

Product Details


Purity >98% (1H NMR)
Melting Point Tm = 141 °C
Appearance White to off-white powder/crystals

MSDS Documentation


2,7-Dibromonaphthalene2,7-Dibromonaphthalene MSDS Sheet

Literature and Reviews


  1. High-performance optical memory transistors based on a novel organic semiconductor with nanosprouts, L. Zheng et al., Nanoscale, 11, 7117-7122 (2019); DOI: 10.1039/C9NR00578A.
  2. Bifunctional conjugated microporous polymer based filters for highly efficient PM and gaseous iodine capture, Z. Tian et al., Polym. Chem., 13, 3681-3688 (2022); DOI: 10.1039/D2PY00529H.
  3. Highly heat-resistant branched silicon-containing arylacetylene resins with low curing temperature, Z. Ling et al., Polym. Int., 70, 1595–1603 (2021); DOI: 10.1002/pi.6254.
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