A highly sensitive and selective fluorescent sensor for Al 3+ and Zn 2+ based on diarylethene with an aminouracil unit

A highly sensitive and selective fluorescent probe for quantitative detection of Al3+ in food, water, and living cells

“…[13][14][15] In the past few years, many uorescent probes for Al 3+ detection have been reported. [16][17][18][19][20][21][22][23][24][25] However, there are still some shortcomings in reported Al 3+ uorescent probes, including a complex synthesis process, poor selectivity and sensitivity, easy interference by other metal ions, Zn 2+ , Cu 2+ , Cr 3+ , Hg 2+ , and even F À , [26][27][28][29][30] and lack of applicability to water samples and food samples. [31][32][33][34][35] Therefore, developing a uorescence probe with high sensitivity, good selectivity, rapid response and low toxicity for detecting Al 3+ is particularly meaningful.…”

Recent Advances in Photoswitchable Fluorescent and Colorimetric Probes

“…Photoswitchable probe molecules demonstrate unique advantages in detecting Al 3+ , such as controllable target response and signal modulation. The Pu group has developed a series of photochromic diarylethene-based photoswitchable fluorescent and colorimetric probes for Al 3+ by combining different structured ligands with photochromic diarylethene structures [ 106 , 107 , 108 , 109 , 110 , 111 , 112 , 113 , 114 , 115 ]. Other photochromic units like azobenzene [ 116 ] and Donor–Acceptor Stenhouse Adduct [ 117 , 118 ] have also been employed in developing photoswitchable fluorescent probes for Al 3+ .…”

Recent advances in small-molecule fluorescent photoswitches with photochromism in diverse states

“…90,91 The introduction of a photoswitch unit into ion recognition systems not only provides dual-channel response signals, but also apparently improves the detection selectivity and sensitivity to specific ions compared to traditional ion sensors. [92][93][94][95][96][97][98][99][100][101][102][103][104][105] To achieve this purpose, Lu et al 106 designed a diarylethenebased molecule functionalized with a pyrimidine hydrazone unit which have multi-controlled fluorescent switching and photochromic behaviours (Fig. 11).…”

“…90,91 The introduction of a photoswitch unit into ion recognition systems not only provides dual-channel response signals, but also apparently improves the detection selectivity and sensitivity to specific ions compared to traditional ion sensors. 92–105…”