Formation and decay of pyrene radical cation and pyrene dimer radical cation in the absence and presence of cyclodextrins during resonant two-photon ionization of pyrene and sodium 1-pyrene sulfonateElectronic supplementary information (ESI) available: Kinetic traces illustrating the time profiles of ?OD720 as a function of time during the TPI of NaPySA ((2.3?4.3) � 10?4 M) in the absence (no) and presence of ?CD (?CD) (10?2 M) and ?CD (?CD) (10?2 M) in air-saturated D2O (Fig. 1S). See http://www.rsc.org/suppdata/cp/b4/b403409k/