Photoreaction of neutral 9-aminoacridine in glycerol:water glass characterized by satellite holes and antiholes

Satellite holes and antiholes in the hole burned (HB) spectrum are used to determine the photoproduct of 9-aminoacridine (9AA) doped in glycerol:water (Gl:H2O) glass with pH = 13. Although monoprotonated 9AA is the photoproduct of the imino form of neutral 9AA, antihole recovery implies that the excited state 9AA returns to original form of 9AA predominantly. Furthermore, similar satellite holes but different antihole structures are observed in the HB spectrum of 9AA doped in polyvinyl butyral film, implying that different HB mechanisms are involved.