iso-Butylammonium bromide

10 g

Order Code: M2060A1
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General Information

CAS number 74098-36-5
Chemical formula C4H12BrN
Molecular weight 154.05 g/mol
Synonyms iBABr, iso-Butanamine hydrobromide, iso-Butanaminium bromide
Classification / Family Alkylammonium halides, Perovskite precursor materials, Perovskite solar cells, Perovskite LEDs

Product Details


≥ 98%

Melting point


Colour Powder/crystals

iso-Butylammonium-bromide, iso-Butylamine-hydrobromide | 74098-36-5

Chemical structure of iso-butylammonium bromide; CAS No. 74098-36-5; chemical fomula C4H12BrN.


iso-Butylammonium bromide (iBABr) has applications in perovskite LEDs and solar cells because its branched side-chain helps promote material solubility and device stability. It is believed that the larger iso-butylammonium cation will not fill into the perovskite cage, thus preventing the formation of 3D perovskite structures.

Literature and reviews

  1. Controllable Structures Designed with Multiple-Dielectric Responses in Hybrid Perovskite-Type Molecular Crystals, Z. Wang et al., Inorg. Chem., 56 (12), 7058–7064 (2017); DOI: 10.1021/acs.inorgchem.7b00662.
  2. Long-Range Order in Layered Perovskite Salts – Structure and Magnetic Properties of [(CH3)2CHCH2NH3]2CuX4 (X = Cl, Br), R. D. Willett et al., Eur. J. Inorg. Chem. 2012, 3342–3348 (2012), DOI: 10.1002/ejic.201101200.
  3. Efficient ambient-air-stable solar cells with 2D–3D heterostructured butylammonium-caesium-formamidinium lead halide perovskites, Z. Wang et al., Nat. Energy, 6 17135 (2017); doi:10.1038/nenergy.2017.135.
  4. Efficient perovskite light-emitting diodes featuring nanometre-sized crystallites, Z. Xiao et al., Nat. Photonics, 11, 108–115 (2017); doi:10.1038/nphoton.2016.269.