Fig. 6From: Preparation and characterization of novel double-decker rare-earth phthalocyanines substituted with 5-bromo-2-thienyl groupsUV–vis spectra of GdPc-thiof in toluene at 20 mg l−1 upon addition of acetic acid (AcOH). 1: without AcOH; 2: addition of 5 μl AcOH, reaction time 5 min; 3: as 2, but after 30 min; 4: as 2, but after 1 h, 5: as 4—addition of 10 μl Et3NBack to article page