Synthesis of photoresponsive phenanthroimidazole-based S,S-dioxide dithienylethene for information storage and encryption
Research on Chemical Intermediates(2024)
摘要
Photoresponsive fluorescent compounds have been widely used to prepare the encryption inks for modern information security. In this study, a photoresponsive fluorescent material based on dithienylethene DTE-PIO4 was synthesized by oxidizing the two sulfur atoms to sulfones. Its solution presented a distinctive fluorescence switching performance when compared with the traditional "turn-off" mode fluorescent dithienylethene, while irreversible "turn-off" fluorescence switching was observed in PMMA films and solid state upon exposure to 254 nm UV light. Remarkably, the PMMA ink was successfully prepared by incorporation with DTE-PIO4 , which indicated the great potential in the fields of optical information storage and ink printing. Further research on information encryption has also been demonstrated through the blending of DTE-PIO4 with DTE-PI in PMMA medium.
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关键词
Dithienylethene,Fluorescence switching,Sulfone,Information storage,Encryption
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