A highly selective fluorescence “turn-on” sensor for Ca²⁺based on diarylethene with a triazozoyl hydrazine unit

Abstract

A new photochromic diarylethene derivative with a triazozoyl hydrazine unit has been designed and synthesized.

A highly selective multi-responsive fluorescence sensor for Zn2+ based on a diarylethene with a 4,6-dimethylpyrimidine unit

“…Upon ultraviolet light irradiation (l ¼ 297 nm), a new absorption peak of complex 1O 0 at 570 nm (3 ¼ 2.33 Â 10 4 mol À1 L cm À1 ) appeared and increased due to the formation of the closed-ring isomer 1C 0 (1C-Zn 2+ complex). 49 At the same time, a visual color varied from light yellow to dark purple was observed (Fig. 3C).…”

Design and Applications of Small Molecular Probes for Calcium Detection

“…Similarly, Wang et al. employed photochromic diarylethene in combination with the triazozoyl hydrazine group to develop Ca 2+ ‐binding sensor ( 51 ; Figure ) …”

“…Similarly,W ang et al employed photochromic diarylethenei n combination with the triazozoyl hydrazine group to develop Ca 2 + -binding sensor(51; Figure 16). [67] Yaoe tal. reportedahydroxycoumarin derived sensor 52 which showed fluorescencet urn-onr esponse upon complexation with Ca 2 + ions in aqueous medium ( Figure 17).…”

A novel diarylethene-based fluorescent “turn-on” sensor for the selective detection of Mg2+

“…3B, the emission intensity of 1o 0 gradually decreased with the irradiation of 297 nm light, due to the formation of closed-ring isomer 1c-Mg 2+ (1c 0 ). 74 When the PSS was reached, the uorescence of 1o 0 was quenched by 37%, accompanied by the uorescent color changed from green to dark green. Reversely, the uorescence spectrum of 1o 0 could be recovered upon irradiation with visible light (l > 500 nm).…”