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Figure 2
UV–vis spectra recorded in toluene for (a) (1E), (b) (2E), (c) (3E) and (d) (4E) after 10 min irradiation. Green broken lines indicate UV–vis spectra recorded in toluene before irradiation; black dotted lines indicate the UV–vis spectra recordered for samples after irradiation in toluene for 10 min; orange solid lines indicate UV–vis spectra obtained for samples irradiated in the crystalline powder form for 10 min and then dissolving in toluene.

Journal logoSTRUCTURAL SCIENCE
CRYSTAL ENGINEERING
MATERIALS
ISSN: 2052-5206
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