Evidence of molecular complex formation between asphaltene and o-chloranil in aqueous micellar medium: A spectrophotometric study.

Highlights: [•] Coal derived asphaltene studied in aqueous micellar media of CTAB and TX-100. [•] Asphaltene forms 1:1 complex with o-chloranil. [•] The formation constant determined by fluorescence and absorbance are in good agreement. [•] The wavelength of maximum absorption of the complexes are in the order of SDS>CTAB>TX-100. [Copyright &y& Elsevier]