Effect of surfactant phase transition on the inclusion behaviour of an amphiphilised porphyrin derivativeElectronic supplementary information (ESI) available: experimental details of spectroscopic studies. See http://www.rsc.org/suppdata/cc/b1/b111692d/The synthesis of porphyrin 1 is described in ref. 8. Brij 35 and CTAN stand for polyoxyethylene(23)lauryl ether, and cetyltrimethylammonium nitrate, respectively. Critical Micelle Concentration (cmc) of Brij 35 is 0.05 mM (see ref. 11); that of CTAN is 0.8 mM (see ref. 15)